> http://runawaybrainz.blogspot.co.uk/2012/04/audio-crystal-cmoy-freeform-h= eadphone.html Good job. He was lucky with the curing temperature. Not because of destroying components but because the expansion can cause 'silvering' where the resin lifts off. I'd perhaps have gone for 0.5% catalyst (which also gives the bubbles more time to escape) > This is simply beautiful. I'm inspired to make something and cover it > with resin. Probably a nice bright LED clock or something visual like > that. Should look really nice. I once made the mistake of encapsulating using a round margarine tub as the mold. Which was made from polystyrene. Fortunately the resin gelled before the tub completely dissolved, but it took a lot of elbow grease and Brasso / Silvo to get the finish I should've got in the first place I've got almost a kilo of silicone mold rubber to use up before it goes past its expiry date. The link is an inspiration, thanks The last arty thing I made was for a friend. At the hard-gelled stage of a block of clear resin he shot it with a nail gun, which shattered it internally but left the surface relatively intact. He has a small red laser pointer under it, looks good in a corner, throwing shards of light as it does, but I think a couple of RGB LEDs might be better --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .