http://www.shapeways.com/forum/index.php Shapeways: Bring your creativity to life in 3D http://www.shapeways.com/forum/index.php?t=rview&goto=57611&th=11762#msg_57611 izaklast 2012-11-28T14:47:21-00:00 http://www.shapeways.com/forum/index.php?t=rview&goto=57615&th=11762#msg_57615 dissolve a rock-solid ceramics object while leaving brittle, water-soluble plaster
intact ? ]]> mkroeker 2012-11-28T16:38:58-00:00 http://www.shapeways.com/forum/index.php?t=rview&goto=57618&th=11762#msg_57618 izaklast 2012-11-28T16:49:46-00:00 http://www.shapeways.com/forum/index.php?t=rview&goto=57619&th=11762#msg_57619
]]> BillBedford 2012-11-28T17:07:57-00:00 http://www.shapeways.com/forum/index.php?t=rview&goto=57626&th=11762#msg_57626 your speciality plaster (nor you).]]> mkroeker 2012-11-28T17:48:50-00:00 http://www.shapeways.com/forum/index.php?t=rview&goto=57635&th=11762#msg_57635 izaklast 2012-11-28T23:22:11-00:00 http://www.shapeways.com/forum/index.php?t=rview&goto=57636&th=11762#msg_57636 izaklast 2012-11-28T23:23:13-00:00 http://www.shapeways.com/forum/index.php?t=rview&goto=57638&th=11762#msg_57638
Plaster is not the material you should be using to make moulds for resin. Resins need to be cast into silicone rubber. The best thing you could do is to break the mould off you ceramic piece and start again. If you search on the internet you can find recipes for converting cheap silicone caulking into something that can be used to make the mould from. But don't forget that whatever you use for you mould it will need some sort of release agent a/ to stop the mould sticking to the pattern and b/ to stop the castings sticking to the mould.]]> BillBedford 2012-11-28T23:52:01-00:00