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dave the potter

Member Since 17 Nov 2010
Offline Last Active Apr 18 2014 10:27 AM
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Posts I've Made

In Topic: Success, Then Failure

20 March 2014 - 02:34 PM

I agree, the cracks came in the cooling. Sometimes pots will crack if the have stuck to the shelf(glaze runs, glaze on the shelf, etc). The cooling shrinkage cannot happen correctly since the bottom of the pot will not move.  


In Topic: Video "a Love Story In Clay"

18 March 2014 - 12:45 PM

Jane and Bill,

The video was beautiful. I am so happy that the two of you are as in sync as you always seemed to be back in the days when you were doing wood and we did shows together. The pieces of your work that I own are some of my favorites around our house.  The clay work is very inspiring and seems to have been the perfect next step for both of you. It was good to see you, only better if in person.

Oh, and by the way, it was always Bill who would have benefited most form makeup.

David Stuart


In Topic: Pulling Handles On Mugs

22 January 2014 - 11:36 AM

I have made thousands of mugs in the last 40 odd years and nary a one pulled on the mug. Never seemed as elegant to me. Same for pitchers, jugs, jars, teapots, casseroles, etc. 

The buying public never seemed to have a problem with them being unattractive. I never felt my forms were diminished by my handles. I own several mugs made by other potters with the handle pulled on them and enjoy using them as well as other kinds of handle. Everyone makes their own way. Even wannabes


In Topic: Painting On Ceramic With Porcelain Paints?

15 January 2014 - 11:28 AM

The answer to the first question is yes if these are overglaze enamels.

Question 2 I don't know the answer


In Topic: First Firing of My Homemade Raku Kiln

25 October 2013 - 11:36 AM

The adjustable regulator is used so that you can have the burner on full and still be able to adjust the flow of gas.  My setup is a 100lb propane tank connected to a Ransome burner through a ball type gas valve. The gas comes through the regulator which I usually have set at 10 psi. The valve is mostly for shutting the gas flow on or off except the 1st cycle where I use the valve to turn the burner up in gradual steps. From the valve the gas goes through the orifice which is a fixed size(sorry, I don't remember the size and the kiln is not where I am but I can get that later).  This sequence determines the BTU value of the burner.  500K BTU sounds like a lot for Raku but that would be a maximum output under ideal conditions so the regulator combined w/the orifice size really determine the output of the burner.

 

I hope this is not overly detailed. I have used many different Raku kilns and burners but they all work on the same principle.

I will get the orifice size for my burner so we can do the math but this weekend it is camping with the sun-in-laws and the grandchildren so it will be a few days.