Taking a mould from a clay sculpture?
Is it possible to take a brush on silicone mould of an oil based clay sculpt? If so, are there any precautions I should take in the way of what clay or resin. It shouldn't be a particularity big cast. about hand-held size
You can absolutely do that. I would suggest sealing the clay first with Krylon crystal clear. I would also do a small test of the Krylon on an excess bit of your oil based clay just to make sure there are no issues with beading.