http://groups.yahoo.com/group/casting/ The Casting List Tue, 09 Feb 2010 21:36:01 GMT Ted Quick http://groups.yahoo.com/group/casting/message/33600 http://groups.yahoo.com/group/casting/message/33600 The only reason know that anyone would say not to use silicone release on silicone rubber molds is when you are trying to make sure the mold parts won't fuse Tue, 09 Feb 2010 20:40:05 GMT vintagepowerplus http://groups.yahoo.com/group/casting/message/33599 http://groups.yahoo.com/group/casting/message/33599 hi guys i have cast some silicon 2 part molds for my magneto parts the question that i have is the epoxy resin that i have tends to try and stick to the mold i Sun, 07 Feb 2010 08:55:04 GMT Arash Tolui http://groups.yahoo.com/group/casting/message/33598 http://groups.yahoo.com/group/casting/message/33598 I want to build a vacuum chamber to boil water. If you have some information about the material or product pleas help me.thanks. [Non-text portions of this Sun, 07 Feb 2010 02:16:02 GMT Seth http://groups.yahoo.com/group/casting/message/33597 http://groups.yahoo.com/group/casting/message/33597 Thanks Ray, I'm going to give your method a try.  I think I may also try the other guys idea of mixing the powder in the resin.  I'll let you guys know how Sun, 07 Feb 2010 02:15:49 GMT Ryan http://groups.yahoo.com/group/casting/message/33596 http://groups.yahoo.com/group/casting/message/33596 I have created an aluminum sleeve using a lathe that is about 1.400" external diameter with a 1.300" internal with a small shoulder at the bottom and 1" exit Sun, 07 Feb 2010 02:15:41 GMT classicplastick@... http://groups.yahoo.com/group/casting/message/33595 http://groups.yahoo.com/group/casting/message/33595 I'd be interested in the answer to this as well as I've only done one or two test pieces using the metallic bronze powder. They were flat backed and required Sun, 07 Feb 2010 02:15:38 GMT Chris R Chivers http://groups.yahoo.com/group/casting/message/33594 http://groups.yahoo.com/group/casting/message/33594 Adding dyes does have a tendency to introduce micro-bubbles. (At least it has in my tests). One of the things that I do is drop a few drops of paint into my Sat, 06 Feb 2010 16:27:51 GMT Mike Brose http://groups.yahoo.com/group/casting/message/33593 http://groups.yahoo.com/group/casting/message/33593 Nice post Millicent. Just to add to that thought, taking that a little further...... another common technique, is to mix the metal powder into a small batch of Sat, 06 Feb 2010 16:20:31 GMT Ray K http://groups.yahoo.com/group/casting/message/33592 http://groups.yahoo.com/group/casting/message/33592 Millicent; if you are getting bubbles on the surface of your (open) molds, then you probably have moisture in the powder that you're using! You should NEVER Sat, 06 Feb 2010 16:03:28 GMT Millicent Lewis http://groups.yahoo.com/group/casting/message/33591 http://groups.yahoo.com/group/casting/message/33591 Here's my two cents: just mix the powder into the resin. I've been using metal powders in my resin castings and I don't like at all the technique of sprinkling Sat, 06 Feb 2010 15:47:07 GMT Ray K http://groups.yahoo.com/group/casting/message/33590 http://groups.yahoo.com/group/casting/message/33590 Hello Seth; I try to "pack" a little more powder into the parting line area when I use the metallic powders in a multi-part mold. Another trick I use is to Sat, 06 Feb 2010 07:55:01 GMT Seth http://groups.yahoo.com/group/casting/message/33589 http://groups.yahoo.com/group/casting/message/33589 I'm thinking about trying some of the metallic powders with my two part RTV molds I use to make my musical instruments. My only concern is where the two mold Sat, 06 Feb 2010 07:54:59 GMT daniel caso http://groups.yahoo.com/group/casting/message/33588 http://groups.yahoo.com/group/casting/message/33588 Take a look at:                                     http://www.tapplastics.com/ Look for their TAP Platinum Silicone System. You will find Thu, 28 Jan 2010 17:24:21 GMT Greg Krynen http://groups.yahoo.com/group/casting/message/33587 http://groups.yahoo.com/group/casting/message/33587 Old style rubber. Common colors were red and black. Greg  Krynen "And that's the biggest thing you realize -- is that you don't have to know it all before you Thu, 28 Jan 2010 16:13:52 GMT The Loewen's http://groups.yahoo.com/group/casting/message/33586 http://groups.yahoo.com/group/casting/message/33586 This is part of my reason for asking about OOMOO as it sets up alot faster and I could have poured 2 molds per day instead of one wilth MM. I only need the