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Bob Coyle

Member Since 06 Jun 2013
Offline Last Active Yesterday, 06:26 PM

Posts I've Made

In Topic: Raku Kiln Tweaking

Yesterday, 06:25 PM

I had luck increasing the length of the chimney on one raku kiln that was not firing hot enough when using a ventui.  I no longer try to fight city hall, and just use a blower. Works fine for a 55 gal barrel kiln with 1 inch Kaowool and  one propane burner.

In Topic: Bisque Fire With Paper

20 June 2016 - 11:21 AM

If you use paper, it might be good to not use any with lots of colored inks. The pigments are mostly organic, but I think that some times there are metal compounds in the ink

In Topic: Just An Other Newbie

19 June 2016 - 03:58 PM

There are worse addictions... Remember, in throwing, once you get past centering... its all uphilll!

In Topic: Outdoor Sculpture Claybody Questions

16 June 2016 - 05:08 PM

I have used different commercial cone 5-6 clays outdoors with no problem. Freeze/thaw here is a problem and I lost several fully glazed cone 04 pieces before I wised up. I would not use any clay that is not fires to full maturity at cone 5 or higher.

In Topic: Building A Work Table

02 June 2016 - 01:41 PM

I'll throw in with Neil, hardboard is a great surface for working with clay. Also I would recommend a separate wedging table with a thick plaster surface. Mine is 3 inches thick and 24x24 inches wide. I have 2 inches of concrete on the bottom and an inch of plaster on the top. I built it at just the height I need to be able to put my full weight downward into the wedge, rather than work only from the shoulders. Since the wedging table is separate, you can really slam the clay down  without shaking up everything else. I can also use it to roll slabs, using my trusty rolling pin.