Artificial All The Way Posted May 6, 2009 Report Share Posted May 6, 2009 How long do I have to work with it before it sets up? Doesn Quote Link to comment Share on other sites More sharing options...
Zbass Posted May 6, 2009 Report Share Posted May 6, 2009 Usually about 7-10 min. You can double that by adding 5% vinagar to the mix. Quote Link to comment Share on other sites More sharing options...
george12182 Posted May 6, 2009 Report Share Posted May 6, 2009 7-10 min working time sounds about right never actually timed it. I usually wait 60 to 90 minutes for it to harden then then pour the second half and wait another 60 to 90 to split the halfs then bake. I'm no expert though, only made 4 molds so far. Quote Link to comment Share on other sites More sharing options...
headshot Posted May 6, 2009 Report Share Posted May 6, 2009 Does anyone else have problems with flashing (molds not meeting up at center) when they split and THEN bake the mold? I seem to be more successful when I bake the thing dry and THEN split it. Also, I'm finding that the dry molds split easier if I go around the edge with a belt sander first to clean up the seam. Does everyone split then dry? Quote Link to comment Share on other sites More sharing options...
bassbug Posted May 7, 2009 Report Share Posted May 7, 2009 I pour the first half of the mold and let it set overnight. Then, coat areas that will be exposed to the second half lightly with vaseline and pour the DWP. Let mold set overnight, separate the two parts and seal with Elmer's Glue mixed 50/50 with water. Thinned epoxy is also a very good method to seal the mold. Whenever possible, I let the mold cure without drying in the oven, the mold has less hairline cracks with this method and seems to be stronger. This method has worked well so far for me. Quote Link to comment Share on other sites More sharing options...
Artificial All The Way Posted May 8, 2009 Author Report Share Posted May 8, 2009 Thanks guys. going to give it a shot this weekend. Quote Link to comment Share on other sites More sharing options...
