george12182 Posted April 15, 2009 Report Share Posted April 15, 2009 I am a little confused on using the marbles for mold guides. After the first half of the mold dries with the marbles in, do you remove them so that the pop or putty flows into the empty marble holes or do you leave them in when you pour the second half and then glue them in one half after you seperate the two pieces. Also, I have an issue with the first two piece mold I poured. I got my master set in the first half and forgot about my mold guides. So I ran around looking for the first thing I could find. So I cut two small pieces off of a senko and stuck them in. I then removed the senko pieces after the first half dried. Anyway when I seperated the mold, the putty that was in the senko holes snapped flush with the first half. So I have no guides but can see exactly where they are suppose to be. Is there anyway I can still add guides after both halfs are dried and seperated? Quote Link to comment Share on other sites More sharing options...
nova Posted April 15, 2009 Report Share Posted April 15, 2009 What I do is simply take a table knife, hold it at right angles to the mold (once it sets up) and spin a tapered hole into the 1st mold half. No need to go deep, 3/16" is plenty. Clean up the debris and then prepare to pour the second half mold. No need to run around looking for things to stick into the half-set plaster. I've done it, it's a pain in the butt. Try to work as simply as you can. Don't complicate the process; there's no need. As far as the second question, the 2 sides of the mold should still set together properly. It will just take a little to find the sweet spot and then clamp and pour. Don't throw the mold away it's still good. www.novalures.com Quote Link to comment Share on other sites More sharing options...
Vodkaman Posted April 15, 2009 Report Share Posted April 15, 2009 After the first half of the mold dries with the marbles in, do you remove them so that the pop or putty flows into the empty marble holes or do you leave them in when you pour the second half and then glue them in one half after you seperate the two pieces. Yes, remove the marbles. Is there anyway I can still add guides after both halfs are dried and seperated? Yes, as long as you can align the two halves exactly. Find a dowel or bolt. Find the diameter and drill a hole through both halves. The hole diameter must be such that you don't have to force the dowel in, but not so loose that it rattles around. Glue the dowel into one half, trim so that 1/4" extends into the 2nd half. Two such dowel pins will be required to locate the two halves of the mold. I have never tried this, but I think it will work. Wait for any comments from others first, someone may have a better solution. Dave Quote Link to comment Share on other sites More sharing options...
george12182 Posted April 16, 2009 Author Report Share Posted April 16, 2009 Thanks guys. There ended up being enough of a burr on where my guides broke off that I can still get it lined up pretty good. Quote Link to comment Share on other sites More sharing options...
