Tuesday, March 14, 2006

Raw Materials Tech Support

Post Your Raw materials questions here. Also SPI has a very handy raw materials dictionary online.

3 Comments:

Anonymous Anonymous said...

This comment has been removed by a blog administrator.

7:24 PM  
Blogger benjmonster said...

can you suggest a good clay for making smoking pipes? what kind of clay is non-toxic after drying?

9:10 PM  
Blogger tjhspi said...

HI,
I think a lot of folks use a low fire eartenware as in this video I found on youtube:
http://www.youtube.com/watch?v=5G3nuBgnSDI
Historically they were also slip cast out of porcelain.
Pretty much any clay is non-toxic after being fully kiln fired but not all can handle direct flame very well.
I would try Sheffield Mass White with Silica sand and fire to cone 06. Maybe glaze the out side but leave the inside unglazed. If you are doing cone 6 stoneware, try that, but maybe avoid manganese speckled stoneware.
Hope this helps !

6:52 AM  

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