On Apr 8, 2005 10:36 PM, vrs <vrs at msn.com> wrote: I know I know. Once you get your own fab up, we can then make those $@%#$^$#^ oh-so-special bus drivers.... :-) /wai-sun

From: "woodelf" <bfranchuk at jetnet.ab.ca> it) So cynical...I feel that way myself, sometimes. Variant Wisconsin quarters will be fine :-). Rare coins are not needed. Though I'll want to recoup some R&D and materials costs, at least to the extent possible. I've sold the results of a few of projects here, at or near cost. For tax purposes, my favorite thing is to ask cost, but gladly take additional donations to the cause. I'll have a look, thanks! One of my goals is to stick with technology we can (theoretically at least) do at home with a minimal investment. If I spend a ton of time buying or building equipment, I start to feel like I need a business plan :-/. Vince

not at all! I used to do this when potting military aircraft power supplies... we used a two part resin, and a bell jar/pump to cycle vacuum half a dozen times - to get the bubble out from the aggressive mixing. not sure how much suck you'll get out of 'seal a meal' though. it would be more convenient to do at least a dozen or so at a time, before it became too time/labour intensive. I recall we had to be very careful on how fast to pump down.. otherwise the casting resin would fizz up like a shaken pop bottle. Not sure how the soft flexible moulds would handle the vacuum either - if they had bubbles... the best way to go would be to machine up a steel die, but that costs real $$ h Jay West wrote: a thought.