ARMADILLO CLAY AND SUPPLIES
  • HOME
  • Clay
    • Low-Fire (04-06)
    • Mid-Fire (5-6)
    • High-Fire (9-12)
    • Non-Fired Clay
    • Casting Slip
    • Bulk Pricing
  • Glazes
    • Underglazes
      • Browse by Color
      • Mayco
      • Amaco
    • Low-Fire (04-06)
      • Browse by Color
      • Mayco
      • Amaco
      • Duncan
      • Low-Fire Clear Glazes
    • Mid-Fire (5-6)
      • Browse by Color
      • Mayco
      • Amaco
      • Duncan
      • Dry Dipping Glazes
      • Mid-Fire Clear Glaze
      • Reduction Results
    • Lusters (017-020)
  • Dry Materials
    • Chemicals
    • Plaster
    • Mason Stains
    • Bulk Pricing
  • Tools
  • Supplies
  • Equipment
    • Pottery Wheels
    • Ceramic Kilns
      • Parts
    • Kiln Furniture
    • Slabrollers
    • Extruders
    • Carts and Cabinets
    • Pugmills
  • Molds
    • GR Pottery Forms
    • Plaster Hump Molds
    • Sprig Molds
  • Bisqueware
  • Books
  • Glass
    • Sheet Glass
    • Glass Frit
    • Glass Accents
    • Tools and Supplies
    • GLASS KILNS
  • Services
    • Firing Services
    • Kiln and Wheel Repair
    • Custom Clay
    • Other Services
  • Kits
  • Gift Cards
  • ORDER INFO
  • LINKS
  • Classifieds
  • ARTICLES
  • COVID-19 INFO
  • ON SALE
  • HOME
  • Clay
    • Low-Fire (04-06)
    • Mid-Fire (5-6)
    • High-Fire (9-12)
    • Non-Fired Clay
    • Casting Slip
    • Bulk Pricing
  • Glazes
    • Underglazes
      • Browse by Color
      • Mayco
      • Amaco
    • Low-Fire (04-06)
      • Browse by Color
      • Mayco
      • Amaco
      • Duncan
      • Low-Fire Clear Glazes
    • Mid-Fire (5-6)
      • Browse by Color
      • Mayco
      • Amaco
      • Duncan
      • Dry Dipping Glazes
      • Mid-Fire Clear Glaze
      • Reduction Results
    • Lusters (017-020)
  • Dry Materials
    • Chemicals
    • Plaster
    • Mason Stains
    • Bulk Pricing
  • Tools
  • Supplies
  • Equipment
    • Pottery Wheels
    • Ceramic Kilns
      • Parts
    • Kiln Furniture
    • Slabrollers
    • Extruders
    • Carts and Cabinets
    • Pugmills
  • Molds
    • GR Pottery Forms
    • Plaster Hump Molds
    • Sprig Molds
  • Bisqueware
  • Books
  • Glass
    • Sheet Glass
    • Glass Frit
    • Glass Accents
    • Tools and Supplies
    • GLASS KILNS
  • Services
    • Firing Services
    • Kiln and Wheel Repair
    • Custom Clay
    • Other Services
  • Kits
  • Gift Cards
  • ORDER INFO
  • LINKS
  • Classifieds
  • ARTICLES
  • COVID-19 INFO
  • ON SALE

Coloring Clay: Part 2

4/2/2018

0 Comments

 

Testing Stains in slips and glazes

​In last month's article, we explored the many uses for Mason Stains. This month, we're going to get down to the nitty-gritty of how to go about testing those colors to hone in on your target hue.
Protect your lungs! Anytime you are working with dry materials, you should wear a properly rated and well-fitting respirator!

In Slip
We're going to explore this process mainly through an exercise of testing one stain color in various concentrations in a decorative slip. This will provide a basic understanding of the process, which you can then build upon with other testing methods.
​
Step 1: Establish Your Base
To begin, we need to identify a base slip formula. There are thousands of formulas out in the world, in books and online, so do some hunting and choose one that has a good amount of community feedback. You will want to find a white or off-white slip that is intended for your firing range. For surface slips, you will need to consider the clay body onto which the slip will be applied. Choose a stoneware slip to apply to a stoneware body, a porcelain slip to apply to a porcelain body, etc. This will help match up the shrinkage rates of the two bodies and help them fit together better, minimizing cracking. Your base recipe should add up to 100, and the colorant (Mason Stain) will be in addition to that. It's a good idea to test a few different slip formulas on your clay body before committing to one and moving forward to the next step. If all else fails, you can save your clay scraps and let them dry out. Pulverize them into a powder to get your dry slip.
Step 2: Choose a Color
It's tempting to go hog-wild and want to test every color at once, but do yourself a favor and just pick one. You can come back and repeat this process again and again. Sticking with one color at a time helps avoid mistakes, especially when you are first starting out.
​
Step 3: Prepare Test Batches
Decide how many different increments of the Mason Stain you want to test. I'd recommend at least 5 to give yourself a good amount of data and allow for a wider range. For the sake of this exercise, we'll stick to 5. We need to make up 5 separate mini-batches of our chosen base slip. We don't need much for each test, so 100 grams should be plenty. We will be working at a very small scale, so precision is crucial. Make sure you have an accurate gram scale on hand. Measure out your 5 batches of dry slip in 5 separate containers.
Picture
Step 4: Add Mason Stain
Now that you have 5 containers of dry slip prepared, it's time to add the colorant. Decide ahead of time what percentages you are testing and mark your containers and your test tiles. For this exercise, we're going to test the following percentages: 2%, 4%, 6%, 8%, and 10%. This is a reasonable range for most Mason Stains, however there are some that require higher percentages. Carefully measure your stain of choice and add them to your base batches. If you have 100 gram batches, this means you would add 2 grams of stain for 2%, 4 grams of stain for 4%, and so on. If you are mixing larger batches, calculate the appropriate grams for each batch. Carefully stir each batch to combine the dry ingredients.

Step 5: Slaking and Mixing
Add just enough hot water to each batch to completely cover the dry materials. Wait a few minutes for the water to make it's way down through the dry powder, stir gently, then add more water if needed to cover the dry ingredients again. It's best to cover your batches and let them slake for at least a few hours, if not overnight. Slaking is a soaking process that gives the water sufficient time to fully saturate the dry materials. Because of the extremely fine particle sizes, this can take several hours. Using hot water rather than cold water will help expedite this process. Once the batches are properly slaked, you can mix them up. I recommend an electric hand mixer or Jiffy Mixer. You may need to add a bit more water to achieve the correct consistency (heavy cream). Blend until smooth, then sieve with a 60 mesh screen to break up any remaining clumps of dry material. Be diligent to not cross-contaminate your test batches. Clean your mixing utensils and sieve thoroughly between each batch.
​
Step 6: Test Tiles
Hopefully you have planned ahead and already have some test tiles made up. If not, don't sweat it, just roll out a slab of your chosen clay body and cut out some small tiles. Make sure to stamp or scratch the percentages into the tile somewhere so you know what you're looking at when it emerges from the kiln. Apply 1-2 coats of each batch to it's matching (and well-marked) test tile, and let dry. Bisque fire, apply clear glaze to half the tile, and re-fire to maturity.
Picture
From these results, I can see that this particular red requires at least 10% saturation for a convincing red in a cone 5 slip. My next step would be to try a few higher percentages to see what deeper shades I can get, as the 10% is still a little too pink for my taste. Maybe I can get that fire-engine red at 12% or 15%. I'll just have to test and find out!
In Glaze
The process for testing Mason Stains in glaze follows the same procedures as previously discussed. Instead of dry slip batches, you will have dry glaze batches to which you will add your stain. While the initial process may be the same, there is much more room for error when formulating glazes. The chemical interactions in glaze are much more volatile than in slip, so there is a decent possibility you will run into some glaze defects along the road. Working through these issues by adjusting your recipe will take time, but you will be rewarded with a custom glaze that is all your own. Additional reading is highly recommended when pursuing glaze formulation.
John Britt article in Ceramic Arts Daily (photo below from this article)
DigitalFire article on formulating and trouble-shooting
Picture
0 Comments

Coloring Clay: Part 1

3/1/2018

0 Comments

 

The Limitless Possibilities of Mason Stains

​At the back of the showroom at Armadillo Clay, there lives a rack of small packages of Mason Stains. The rainbow of powders is eye-catching, but what are they even for? Though they draw many a shopper's eye, their uses can be somewhat of a mystery.

​So what are they? 
Mason Stains are specially formulated combinations of colorants that create specific hues. For example, #6371 Dark Teal is made up of aluminum, cobalt, and chromium. The resulting combo-colorant is a deep, rich, ocean teal that is powerful in small amounts.

But how do you use them? Mason Stains can be used in a variety of ways! Because they are colorants, they are very flexible in their applications. Here are the four most common uses:
Picture
Picture
In Clay
Wedge stain into your clay to make it whatever color you want! White clay works better as a base, and will help keep your stain color brighter. Wear gloves to avoid staining your hands! Pro Tip: Mix your stain with a little water, and then add it to your clay to make the color distribute faster and more evenly when wedging.
​

Photo from Ceramic Arts Daily and Naomi Lindenfeld
Picture
In Slip
Just like your clay, you can dye your casting and surface slips with mason stains to get custom colors! These colored slips can then be used for marbling, surface decoration, carving, and more. You can also use it for colorful sgraffito and mishima!
Picture
​In Washes
Add your stain of choice to some water, and a bit of Frit or Gerstley Borate as a binder, and you've got a brightly colored ceramic wash you can use in the same way you would use an iron oxide wash! These can also be used to do photocopy transfers.
Picture
In Glaze
If you have dabbled in glaze mixing, this one will come as no surprise to you. If not, don't worry. You can add mason stains to almost any clear or white base glaze to make it your own custom color! As with any glaze formulation, this process requires some testing to ensure a good glaze fit, and avoid undesirable surface defects. Further reading is encouraged when pursuing this application:
John Britt article in Ceramic Arts Daily
DigitalFire article on formulating and trouble-shooting
At the end of the day, using mason stains requires a bit of testing, no matter what application you are pursuing (some less than others). Each different stain has its own properties, and some colors are more powerful than others. You may only need 2% (by dry weight) of Sage Gray, but 15% of Titanium Yellow to achieve the same level of saturation for each color. And those are just slip colorant percentages for cone 5/6. If you want to make a Titanium Yellow glaze, your percentages will be different. If you want to make a low-fire slip, again, your percentages will be different. With so many variables in the mix, it is important to take the time to test!
0 Comments

Spring Cleaning

3/24/2017

0 Comments

 
Picture
Spring is Here!
With an unusually warm February come and gone, it's time to really start gearing up for spring! The official start of the season is on March 20th, but we're not waiting around to get to work in the studio! After the lull of winter, there are likely to be some chores that need doing to whip your creative space back into workable shape (I know mine is a horrid mess!), so we've made up a little checklist that might be helpful to you!
Spring Studio Cleaning Checklist
  • Vacuum out the kiln: Unplug your kiln and use a hose attachment to carefully vacuum out debris from the bottom of your kiln. Don't touch the thermocouple! Static from the vacuum can damage it!
  • Sweep the studio: Make sure to wear a respirator!
  • Evaluate clay and glazes: Check your leftover clay and glazes, re-hydrate when necessary and pitch what isn't worth saving.
  • Tidy the tools: Gather up tools from around the studio and get them cleaned and organized so you can hit the ground running!
  • Refresh linens: Wash out your apron, throwing towels, rags, etc.
Stepping into a dirty, disorganized studio can really put a damper on your creative motivations. Take a day this weekend to do some spring cleaning, and your artist within will thank you for it!
0 Comments

How much clay?

1/5/2017

0 Comments

 
One question we get a lot is "How much clay do I need to make ____?" Alternately, there is also the "How many mugs can I make with a box of clay?" version. It's something everyone asks at some point in their clay explorations, usually more than once! While meandering through the archives of Ceramic Arts Daily, I came across this great diagram by Robin Ouellette and wanted to share!
Picture
If that is too small to read, here's a charted version:
Picture
This is obviously just a general guide, and you may need to use more or less clay to achieve these forms. Happy potting!
0 Comments

Demo: Textured Slab Plates

11/1/2016

0 Comments

 
I can't believe it's already November, but here we are. If you plan on making some of your gifts this holiday season, it's time to get in gear! Between making, drying, firing, glazing, and re-firing, there is a pretty substantial lead time on any clay project, so don't procrastinate! Get ahead of the holiday-gift game and start today. We love these little textured dishes because they are easy to make, look great, don't require many tools, and the technique can be adapted to make almost any form!
Picture
Supplies:
  • Clay
  • Fettling knife or similar
  • Rolling pin or hand roller
  • Sponge
  • Straight-sided rib
  • Wire cutter
  • Paper plate
  • Texture mold or similar texturing tools

Start by cutting a slice off your block of clay of choice. I'm using Longhorn White for this demo. Roll out a slab that is approximately 3/8" thick. When we apply the texture, it will be thinned down more, so we want to be sure to start with a substantial slab. Roll the clay out gradually and make sure to flip and turn the slab as you go. You can use dowel rods to ensure an even thickness, or just eyeball it.
Gently drape the slab over your texture mold. Armadillo Clay offers a wide selection of designs for texture slabs. I chose this one for its intricate vine pattern! These molds are made from plaster, which releases from the clay naturally and requires no release agent. You can also use lace, stamps, or other texturing tools to decorate your clay slab.
Picture
Picture

​Using your rolling pin or hand roller, press the clay onto the texture slab with moderate pressure. Make sure to roll in multiple directions, and all the way to the edge of the mold. You can gently lift one side of your clay slab to check and see if the design is imprinted. If it is faint, continue rolling with increased pressure until you get a good impression.

Carefully remove the slab from the mold and lay it flat with the textured side up. Using your paper plate as a template, cut out the shape of your dish using the fettling knife or a similar cutting tool (you can even use a butter knife in a pinch). Turn the paper plate right-side-up and set your round slab into the center. Lift the plate a few inches off the table and let it drop a few times. This will help the clay settle into the form and take the shape of the plate. If the paper plates you have are not very sturdy, you can double- or triple-layer them to help support the clay.
Using your thumb, gently press on the sharp edge of the rim to soften it. Continue this soft pinching motion all around the rim. Don't worry if it isn't perfect, there will be more opportunities to refine later. Let the plate set up for about an hour, or until it becomes soft leather-hard.

When the plate has set up to the soft leather-hard stage, it can support its own weight without the paper plate form. Once your piece is out of the paper form, gently turn it over and set it on a bit of foam to prevent damage to the texture. Keep in mind that this is a dessert-sized plate, and for larger forms like a dinner plate, you 
will need to add a support underneath once you remove the paper plate form and flip the clay piece over. I find that sponges work well for this.
Smooth the edges
Score the foot
Attach the coil
Blend the coil
Roll out a thin coil and tap one side to make it flat. Score the flat side of the coil and the bottom of your plate on the "shoulder", where the flat bottom starts to turn into the rim.

​Brush a bit of water, slip, or vinegar onto the score marks and connect the foot to the plate. Using a rib, blend the coil onto the bottom of the plate on both the inside and outside of the foot. Make sure to use one hand to support the underside of the plate opposite where you are pressing the rib, keeping the foam in between to act as a buffer and protect your texture. Once the foot is blended, you can go back with your sponge and refine the foot and rim. Try not to use too much water, as it will soften the clay again and cause distortion to the shape.


Last but not least, once the foot has set up a bit (about 30 minutes), flip your plate over and give the foot a few gentle taps on a flat surface. This will level out the foot so the plate doesn't wobble.
Picture

Tada! You just made an awesome appetizer plate/ring dish/catch-all/soap dish/you-name-it! Aunt Rosie will be in raptures!
​

Bonus tip: Choose a glaze that accentuates texture, like Mayco'sElements Glazes or Foundations Sheer Glazes!

0 Comments

Packing Ceramics for Shipping

10/1/2016

0 Comments

 
Most of us at some point will have to ship a ceramic piece, whether it be for a gallery, online customer, or Aunt Bernadette's birthday. After spending hours making a beautiful cup, plate, sculpture, etc., the last thing we want is to hear that the precious cargo arrived in shards! Amaco published this great video that covers the basics of packing pots for shipping:
A Few More Tips
  • When packing multiple pots, it is best to provide an inner box for each individual piece. If you are shipping multiples of a similar shape and size, sometimes you can get away with just generously bubble-wrapping each individual piece and then stacking them together in the inner box.
  • Not sure if you packed it well enough? Imagine lifting the box to eye level and dropping it onto the hard floor. Does the thought make you nervous? Then you probably didn't pack it well enough. Shipping companies like UPS and US Post recommend ensuring your package can safely drop from a 5-6 foot height without damage (because their sorting facilities do just that!). Your instincts will tell you if you need to add more padding.
  • Give it a shake! You don't want to hear anything rattling around in there. If you do, open the box and add more padding. If the contents are loose enough to jostle around, they will be more prone to damage during shipping.
  • Reinforce heavy boxes with fiber tape, especially around vulnerable areas like corners.
  • The most successful packing jobs include multiple types of materials (bubble wrap, styrofoam, packing peanuts, etc)
0 Comments

The Damp Box

9/2/2016

6 Comments

 
Why and How to Make Your Own
Making pots takes time. Decorating them takes even more in some cases. One thing that is always at the forefront of a potter's mind is the moisture state of the piece. If it's too dry, the carving tool will leave ragged edges. If it's too wet, the clay will stick to the tool and smear. Timing that handle attachment or that mishima scraping is a major part of our art that takes practice and patience to perfect. Let's face it, though: we all have busy lives, and sometimes, time constraints don't allow us to wait for just the right moment. Luckily, there is an easy solution that makes a great addition to your studio: a damp box.

A damp box is a humid container in which to store in-progress claywork. You are creating a makeshift version of this every time you put a plastic bag over an incomplete piece. The advantange of a damp box is that you can do this without the hassle of the plastic bag, or the potential surface marring it can cause.

Now, you could pay hundreds (or even thousands) of dollars for a fancy damp cabinet from a manufacturer, but I'm a broke twenty-something who pinches every penny until they beg for mercy. Why pay all that money for something you can achieve with $20 and 30 minutes of your time?
Picture
The first consideration is the size of your box. Think about what kind of work you are most likely to want to store. Measure some of your pieces and add 2-3 inches to each dimension to give yourself some room to get the pots in and out of the box, as well as to allow for the plaster layer on the bottom. You may need more than one box for different types of pots.

​The type of plastic storage box isn't terribly important. A fancy one with a tight-fitting lid will stay humid longer, but a cheap one works just fine too. You might want to consider how much space you have to store the boxes as well.

Once you have chosen your box, you will need some plaster. I prefer a medium-density plaster such as Puritan Pottery plaster or #1 Casting plaster (both are available at Armadillo Clay). You will want to weigh out about 10 lbs of plaster for a 30-40 gallon box. Smaller boxes will use less plaster. Assuming you are using one of the two plaster choices I recommended, you will need about 6 1/2 pints of water to make up that 10 lbs of dry plaster. In a clean bucket, measure out your water, then add in the dry plaster and mix for about 5 minutes. Make sure to wear a respirator! Once your plaster is well-mixed, carefully pour it into your box until you have about an inch depth of plaster in the bottom. Too much, and the box will be very heavy. Too little, and your plaster layer will be prone to breaking when you move the box around. Let the plaster set overnight, lid off.

Your damp box is ready to use! Make sure to leave the lid off when it is not in use, to avoid mold growth. If you do get some mold growing, you can spray the plaster slab with a bit of well-diluted bleach. To recharge your damp box, just pour some fresh water onto the plaster slab. I prefer to have a layer between the plaster and my pots, so I cut some old Orton Cone box liners to make a soft sponge layer on top of the plaster. Once you have a damp box, you'll wonder why you didn't make one years ago!
6 Comments

5 Ways to Fight the Warp

8/2/2016

1 Comment

 
If you've ever tried handbuilding a piece, particularly one with a large flat surface such as a platter or decorative tile, you've most likely encountered issues with warping. You smooth and carve and sand and perfect, and then it comes out of the bisque with that dream-crushing wobble. Don't worry, you're not alone. Most people underestimate the difficulty of handbuilding, particularly flat pieces like tiles and plates. In reality, there are a plethora of nuances to making a successful handbuilt plate. Here are a few tried-and-true tips to help you avoid that heartbreaking warp:
1. An Even Slab
​Now, this may sound like a no-brainer, but believe me, it takes practice to get a good even slab. It starts when you cut the clay off the pug. Rather than just opening the bag and slicing off a layer, examine the clay block first. You should be able to distinguish a spiral in the middle.

This diagram from theClay Arts Guild of Helena shows how the clay comes out of the machine/extruder with the spiral through the center. Each pug is then cut into 25 lb blocks, set up on end, and bagged. This is standard practice for clay manufacturers.
Picture
The spiral usually ends up facing up toward the opening of the bag, so when you just slice a layer off the top, you are taking a whole cross-section of that spiral with you. Not good! The clay particles are aligned differently in the center of this slab than they are at the edge. To avoid starting off on the wrong foot, take your clay pug out of the bag and cut your slice off the side of the pug. This will give you a relatively even section of clay with which to begin preparing your slab.

Now that you have a nice piece of clay, stretch and roll out your slab gradually(don't smash it into shape all at once!), flipping and turning it as you go. This will help align the particles on both sides of the slab evenly.

2. Handle With Care
As you work, try to keep in mind how you are handling the soft slab. Anytime you need to move it, ask yourself: "Do I really need to pick up the slab, or could I use another board to flip/adjust it instead?" Use boards as often as possible to sandwich the slab and flip it, rather than picking it up with your hands. This avoids stretching the slab, which can translate into warping as it dries. Sometimes there's no other way but to just pick it up, though, so when you do, make sure to go slow and splay your fingers to give the slab as much support as possible. Once the slab sets into the leather-hard stages, this stretching risk is all but eliminated. Once the piece is finished, dry it with just as much care! Slow and steady wins the race. Fast, uneven drying encourages warping.

3. Don't Stress, Compress!
While this is more of a general rule of handbuilding, it sort-of applies to warping, so I've decided to mention it. Make sure to compress your edges and attachment seams! The edges of the slab get weaker as you work and move the slab around, so it is important to go back and re-compress those edges to ensure sturdy attachments and strong rims. Clay moves as it dries, and without proper compression on your attachments, those joined slabs will want to warp away from each other, creating cracks.

4. Put a Foot On It
A plate with a foot ring is much less likely to warp than one without. The reason for this is the same as basic construction fundamentals: A broad plane is much stronger with an underlying support brace. The foot ring adds this support and helps stabilize the wide flat span of slab.

5. Don't Wait, Weight!
Weights are a very helpful tool for handbuilders. Most common are small sandbags that can be made at home with old socks and a Ziploc sandwich bag. Fill the sandwich bag with a pound or two of sand, double bag if desired, and place inside an old athletic sock. Tie off the end and voila! Instant high-tech handbuilding tool. These sandbag weights are perfect for plates, applying just enough even pressure to discourage warping as the plate dries. As soon as the plate is soft leather-hard, these weights can be applied. Don't overdo it, though. One or two sandbags usually does the trick. I recommend putting a soft liner between the sandbags and your piece, however, as the texture from the sock can sometimes be left behind. I use a thin piece of foam (like the ones that line Orton cone boxes!) to preserve my plates' surface.

For tiles and other flat pieces, sandwich them between sheets of drywall and let them dry slowly, flipping every day or so. Make sure to wait until the pieces are soft leather-hard before sandwiching, to avoid damaging any decoration on the surface. I also use this technique on larger plates and platters, to help keep the rim level as it dries.
​
At the end of the day, as with anything clay-related, there is no shortcut to experience. Some levels of understanding can only be achieved through trial and error. Don't get discouraged! Keep making, keep learning!
1 Comment

Olla Irrigation

7/1/2016

0 Comments

 

Traditional methods to Beat the Heat

Now that the unseasonably generous rains seem to be a thing of the past, we Texans find ourselves swiftly returning to our familiarly brutal summer weather. The punishing heat can wreak havoc upon plants, and every gardener knows just how important watering is during these sweltering months. Thankfully, there is a low-tech, low-cost, water-conserving solution to help keep that garden green: Ollas! Pronounced "OY-yahs", these porous pots are buried up to the neck in the soil and filled with water. Due to the porous nature of the clay body, the water slowly 'sweats' through the pot and waters the soil around the plants. Think of it as an automatic irrigation system without the massive expense!
Picture
Picture
Ollas are traditionally made as a bulbous bottle-shaped form with a narrow neck that is capped by a plug or lid to prevent critters and debris from getting inside the pot. There is no set rule on an olla's shape, however, and you can get creative with your design! The size of the olla will depend on many factors: available space, type of soil, sun exposure, number of plants, etc.

​Your ollas can be as functional or sculptural as you want. Check out this clever face design (left) from 
Dripping Springs Ollas! They are very easy to install (just dig a hole!). The best time to put them in is when you are first planting a bed, however if you are very careful, it is possible to introduce an olla to an established garden. These simple pots can be made by anyone, and can be very helpful for any gardener!

Let's make an olla!

Start by choosing an appropriate clay body to make the pot. We recommend using Cinco Rojo, Armadillo's mid-fire red stoneware clay that is very porous when fired to cone 04. You may also use other clay bodies such as stonewares, as long as you only fire them to cone 04. Though traditional ollas are made from terracotta clay, our Longhorn Red loses most of its porosity at cone 04, so we recommend the Cinco Rojo for best results.

Time to make your olla!

Important attributes to include in your design:
- A good-sized well (the belly of the vessel) to hold water. The larger the well, the less frequently you have to fill it!
- A narrow neck. This minimizes the surface footprint of the olla, leaving more room for plants. Just make sure you can still easily fill it up!
- A lid. The style of lid makes little difference, so long as it fits well. If you cannot make a lid, or if the lid you made doesn't work out, you can always use a rubber plug, snug-fitting rock, or other means to seal off the mouth of the jar.

Let dry and fire to cone 04.

Glazing
Traditional ollas are left unglazed, but contemporary makers have found that by glazing just the neck, mouth, and lid, you can significantly reduce the water lost to aspiration/evaporation through these exposed, above-ground sections. The well of the pot that remains beneath the soil must be left unglazed (inside and out!) to allow the water to pass through the pot into the soil.

Apply a low-fire glaze and fire to cone 06, install in your garden, and fill with water. Now you can sit back and enjoy your summer, with less watering and happier plants!

Note: Make sure to check the water level of your olla daily for the first few weeks, until you get a feel for how frequently you need to fill it!
 
Show us your handmade ollas and share tips for other gardening potters on ourFacebook page!
0 Comments

Color and Pattern

6/1/2016

0 Comments

 

Artist Feature: Renee LoPresti

When I first met Renee LoPresti, she was showing her wares on the front porch of the studio at Eye of the Dog's Holiday Show last fall. The colorful, graphic nature of her pots caught my eye, and we got to chatting. A relatively new transplant to Texas, Renee was both humble and enthusiastic, happy to 'talk shop' about the intricacies of working with stencils and colored slips. In the months since then, her work has evolved and captured the spotlight, popping up in galleries from Louisiana to Colorado, and delighting attendants of this spring's Dirt Dauber Festival.
Picture
​A BFA graduate of Alfred University, Renee first moved to the Lone Star State back in 2010 to take a glassblowing position at Wimberley Glassworks. A bit of coincidence and a twist of fate eventually landed her squarely at Eye of the Dog Art Center in San Marcos, where she has taken up as an artist-in-residence for the past year. No stranger to dedication, she can often be found hard at work in the studio in the early hours of the morning.

I recently had the opportunity to take a workshop taught by Renee, and obtained a glimpse of the playful-yet-laborious process she puts into every piece. Working with a combination of slips and underglazes atop Armadillo's Cinco Rojo stoneware, each pot is painstakingly layered with blocks of color, incised with tools, and tediously patterned with tiny dots squeezed from an applicator bottle. At the end comes the "big reveal", when the paper and vinyl stencils are carefully removed to unveil the bold, dynamic focal points of the piece. Renee lists architecture and vintage objects alongside Meredith Host and Kristen Kieffer on her well-rounded index of influences. Her passion for design pushes her to make work that is both communicative and accessible.


So far this year, Renee has had her work featured in eight different exhibitions, and she shows no signs of slowing down. With future plans to pursue both teaching and a potential residency program, for now she is focused on making. The next place to find her pots will be in Lubbock on June 11th and 12th for the Wine and Clay festival at the Llano Estacado Winery. This October, she will make her debut at the renowned Texas Clay Festival in Gruene. In the meantime, you can follow her work on Instagram at @staygoldceramics

Picture
Picture
0 Comments

PRICES LISTED ON THIS WEBSITE ARE SUBJECT TO CHANGE WITHOUT NOTICE
For the most current pricing and product availability, please call us at (512)385-7311


Hours
Mon - Fri      9am - 5pm  
Saturday     9am - Noon

Armadillo Clay & Supplies

3307 E. 4th Street
Austin, TX 78702

P: (512)385-7311
F: (512)385-1152

Sign up for our
monthly newsletter!

SUBSCRIBE
  • HOME
  • Clay
    • Low-Fire (04-06)
    • Mid-Fire (5-6)
    • High-Fire (9-12)
    • Non-Fired Clay
    • Casting Slip
    • Bulk Pricing
  • Glazes
    • Underglazes
      • Browse by Color
      • Mayco
      • Amaco
    • Low-Fire (04-06)
      • Browse by Color
      • Mayco
      • Amaco
      • Duncan
      • Low-Fire Clear Glazes
    • Mid-Fire (5-6)
      • Browse by Color
      • Mayco
      • Amaco
      • Duncan
      • Dry Dipping Glazes
      • Mid-Fire Clear Glaze
      • Reduction Results
    • Lusters (017-020)
  • Dry Materials
    • Chemicals
    • Plaster
    • Mason Stains
    • Bulk Pricing
  • Tools
  • Supplies
  • Equipment
    • Pottery Wheels
    • Ceramic Kilns
      • Parts
    • Kiln Furniture
    • Slabrollers
    • Extruders
    • Carts and Cabinets
    • Pugmills
  • Molds
    • GR Pottery Forms
    • Plaster Hump Molds
    • Sprig Molds
  • Bisqueware
  • Books
  • Glass
    • Sheet Glass
    • Glass Frit
    • Glass Accents
    • Tools and Supplies
    • GLASS KILNS
  • Services
    • Firing Services
    • Kiln and Wheel Repair
    • Custom Clay
    • Other Services
  • Kits
  • Gift Cards
  • ORDER INFO
  • LINKS
  • Classifieds
  • ARTICLES
  • COVID-19 INFO
  • ON SALE