Tuesday, July 22, 2014

Cone 6 never looked so cool!


The Ceramic Shop is excited to now carry the very latest from Coyote Clay & Color – a new line of specialty slow-cool cone 6 glazes! By adding a controlled cooling to a typical cone 6 firing, these rich glazes produce dynamic, crystalled surfaces – results that can be quite difficult to obtain, especially when using commercial glazes. Coyote has you covered, though, with their new series!



These new crystal glazes do not run or seed and can also be fired right along with your other cone 6 glazes, so you’ll have no worries about loading a special kiln just for these finishes. You will, however, need to program a special slow cool segment into your firing program – consult your kiln’s operation manual and use the following program:



Ramps: 5



Ramp 1: 100/hour to 220 (this preheat ramp is optional)

Ramp 2: 350/hour to 2000

Ramp 3: 150/hour to 2200, hold 15 minutes

Ramp 4: 500/hour to 2150, hold for 15 minutes

Ramp 5: 125/hour to 1400



Please keep in mind that thermocouples tend to vary slightly, so you may need to tweak the top temperature for your kiln. Your witness cone 5 should be all the way down, and the witness cone six should be from halfway over to the tip even with the base (between cone 5 1/2 and 6), cone seven should be mostly straight.



Coyote currently offers seven different glazes, with plans on expanding the series even more, so keep an eye out on our website for new offerings. Here are some samples:
















The Ceramic Shop currently offers these glazes in several different amounts, as well – you can choose from wet-mixed pints, 1-gallon pails, or 3-gallon pails, or if you prefer to mix your own, we also sell dry glaze in 10-lb. and 25-lb. amounts. These options are all available on each glaze’s pull-down menu. Questions? Don’t hesitate to give us a call at 215-427-9665.

Tuesday, July 1, 2014

Kiln Furniture for the Ages


If you’ve ever loaded a kiln of work glazes on all sides, or if you’ve worked in a clay classroom with small children and have been concerned about the glaze on their work running and sticking to kiln shelves, chances are you’ve used kiln supports produced by us here in Philadelphia. That’s right, The Ceramic Shop is more than just a supplier of your favorite studio and classroom supplies – we also have a full production set-up where we make a wide variety of kiln supports, furniture, and posts under the Roselli name. The Ceramic Shop acquired the company in 2006, and ever since then we’ve been producing stilts of all shapes and sizes.

One thing that I’ve always loved about ceramics is how anything that makes it through a firing is rendered permanent – that means that the work that you put in there, as well as the stilts or furniture that you might use to support it, both have the same chance of existing somewhere in the archaeological record down the line. Of course, the history and permanence of the material is something that gets a lot of mention in ceramics-focused art curricula; it’s often the nice stuff that students and artists get to see, though.  The stilts and the furniture survive over time, too, and even though looking at that might not pack quite the punch of, say, taking in some amazing Greek vases, it still tells us a lot about how ceramics have been made over time. I love working for a place that contributes to this side of the ceramic record -- largely unseen to many but absolutely necessary.

Last summer, I took a trip just outside of Rome, Italy. The town of Arezzo was a beautiful little place that was largely built up in medieval times, but it had been established much, much earlier – it had actually been the production center of fancy glazed tablewares in Roman days, so business there had been established in roughly the 1st century BCE -- over 2,000 years ago. There, archaeological excavations (that took place in the parking lot of a church, nonetheless!) uncovered a large-scale production studio, and you can check out all of the goodies they dug up in the town’s museum.

Much of the museum was filled with awesome, detailed press-molds that had been used to make fancy bowls and plates:

 The small press molds on the top shelf were made for handle additions; 
the bowl forms on the bottom made fancy, red-glossed tablewares.

However, a lot of the archaeological remains they found in excavations were pieces of kiln furniture – primarily, wheel-thrown donut-like spacers to separate glazed wares in a kiln, and stilts, very much like the ones produced by The Ceramic Shop today. Imagine my surprise when I looked into a display case and saw a 2,000-year-old version of a stilt we make. Here’s a picture:

Ancient tri-point stilts

Compare this to our own double-pointed stilts – it’s amazing how the design of this piece of furniture has not functionally changed in over two millennia! Here are a couple images of the stilts that we produce:

Stilts by Roselli. Unintentionally SUPER retro.

Seeing two objects made so far apart, in both time and distance, served as a very solid reminder as to just how permanent the ceramics process is.

The production studio for our modern stilts can be seen in our North Philadelphia showroom; if you’ve stopped by and never had the chance to check it out, just ask one of the employees the next time you’re in and we’ll be glad to give you a peek at production. It’s kind of cool to think that you can see a process that has been unchanged in so many ways over such a long time! Hope you enjoyed the history lesson, and I’ll leave you with one final image from my trip – a display of ancient potter’s tools, mainly made of copper, ivory, and bone.