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| mp2526:
as mentioned before vacuuming helps tremendously, and if you look around you can find a lab desiccator on eBay and a A/C vacuum pump will work fine. Here is an example of what a desiccator looks like. They come in various sizes and are made either in glass or synthetic compound. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=26406&item=3822836150&rd=1 If a vacuum is too much, then the next best thing is an air compressor (especially if you already own one) and a paint pressure pot (ie http://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber=37515). The concept is similar, but rather than sucking all the air bubbles out, you compress the air bubbles out. |
| darkcape:
I love this group. awesome responses from everyone. someday i'll have to setup a vaccuum press but cost and space is my major problems here. (yeah the full cabinet is taking up a lot of space right now but I can kind of pacify the wife with it now.) where does one get silicon to make molds with? I've seen the stuff on mythbusters allong with ballistic jelly (don't even want to think about the cost of that) but where do you get it? anyone have a favorite outlet? and is it that much cheaper then the latex. or as often seen does someone have another option. and I love the lego mold box idea might have to go raid my brothers kids stash. great idea again Erik. I've played around with the sculpty stuff a bit to make hard forms but didn't really like it wierd shrinkage and non uniform hardening. but that could also be do to the toaster over I was using. |
| ErikRuud:
Silicone rubber is available from Smooth-On, Alumilite, Eager Plastics, PolyTek, Micro-Mark and just about every other place that sells two part resins. I am pretty sure that the stuff in your Alumilite kit is silicone and not latex. As far as I know, Alumilite does not sell latex. |
| darkcape:
Yep you are right. Read the label "rtv mold making rubber base" main ingredients siloxane silica.from dow corning. but hey not for human injection dang now i need to make new plans for my weekend. :D smooth-on looks less expensive. just need to shop around and find someone that carries it in the gallon size. |
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