How much sodium silicate do I add to colored slip to create the crackle effect on a thrown pot?

by Jane
(Maine)

Question: I've been studying Hsin-Chuen Lin's videos and am intrigued with the slip he uses containing sodium silicate.

I know I can brush the sodium silicate over the slip, but would like to add it to the slip instead, as he demonstrates. He does not mention how much/ratio of the silicate to the slip, however, and was wondering if you knew?

Answer: Wow, that's a good question which I do not know the answer to.

My best advice would be to run a test on 4-6 small pots, each with a different ratio of sodium silicate to slip. Use the ratio with the best results or tweak your ingredients further until you get what you want.

Is there someone out there who is familiar with this technique and has a better answer?
Thanks,

Steve

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Jan 14, 2014
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Sodium Silicate and Slip
by: Anonymous

Apply the sodium silicate to the cylinder. Torch until dry. Apply slip over sodium silicate. Dry. Expand cylinder from inside to form bulging pot.

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