best to check out their web site for the particulars, they have a lot of product how to's etc. I think the blue or green silicone is best but requires a vacumn chamber to de air it first. I use the cheap self de airing stuff ,takes about 4- 8 hrs to cure a mold half and its a softer durometer than the others when cured but for most stuff it has worked well and held a reasonable tolerance if you have enough product around the part or a ridged box surround ,they sell it in 1lb containers. No chance of any damage to the part ,nothing sticks to it....except other silicone so you have to use their mold release between mold half's, it comes with it in the kits. I've even poured low temp alloys, lead etc. in it with great results and excellent surface detail.
I've used their urethane plastic for all kinds of stuff, cures in 2 minutes, tool handles, prototype block material....machines really well and they sell dyes for color. I've used certain sheet plastic, the slick white milky colored stuff...HMWP, I think Delrin also etc. for quick molds also as it does not stick to it either. .test first. Wont stick to plastic containers marked "PP",
, either and I've used those to make rounds for the lathe.
To extend the shelf life they sell that canned stuff, bloxogyen?, but the hot tip if you have a mig welder with an argon bottle in the shop is to give each bottle a couple blasts after each use and you'll get a year on the shelf, paint also, stuff does not like moisture and they say if it does get contaminated you can bake it for awhile to burn it off but I don't like that idea much, when its contaminated it foams up when curring.
Worth a try for under a 100 bucks and you'll find a lot of uses for it.
