10-26-2009, 03:38 AM
I have never worked with resin but I use ultra cal 30 to make all my molds its a super hard stone.I'm assuming you will be making these two piece molds?You can always check out theeffectslab.com so very helpful info on there,as well as in the mark alfrey video and even you tube if you get lucky.I'm sure someone else can tell you everything I forgot lol. Hope this helps,Hector