the_hide Posted March 5, 2004 Report Share Posted March 5, 2004 I'm using two piece plaster molds sometimes with a netcraft injector sometimes without to create fully rounded grubs, paddletails etc. I'm finding that occassionally Im getting what could only be described as a heat dimple (shrinkage) in the sides of some baits. Is this likely to be that Im pouring/injecting the bait to quickly or is it that the plastics probably to hot and its shrinking as it cools. You gents who pour stick baits with dels molds might have experienced this, I tend to see it in my free poured sticks sometimes aswell. Quote Link to comment Share on other sites More sharing options...
siebler_custom_baits Posted March 5, 2004 Report Share Posted March 5, 2004 It could be you are taking the baits out while they are too hot. I had this problem for a while when i started. Quote Link to comment Share on other sites More sharing options...
the_hide Posted March 5, 2004 Author Report Share Posted March 5, 2004 I hadn't considered that CJ thanks, generally I have 6 or 7 molds lined up so by the time I get to the last mold the other ones have had a long time to cool. Ill pay attention nex ttime, some are working some aren't so its more likely something like this that Im not noticing. thanks. Quote Link to comment Share on other sites More sharing options...
Fish_N_Fool Posted March 6, 2004 Report Share Posted March 6, 2004 Nope that's not the problem. As the Plastic cools it shrinks, no big deal in an open 1 piece mold but in a two piece mold it either needs to suck more hot plastic down the pour hole or it sucks the side in as it cools. If you can keep the pour hole open and hot plastic above it ready to get sucked in, this will eliminate about 80% of your problems. I larger pour hole works better for this then a small one, but I still get a few baits that collapse once and a while. If anyone had a fool proof way to stop this I'd like to hear it. Quote Link to comment Share on other sites More sharing options...
the_hide Posted March 7, 2004 Author Report Share Posted March 7, 2004 Thanks fishing fool you where absolutely correct, what I did was made the pour hole at the start of the lure as big as I literally could then made a even larger "reserve" Ill call it further further up from the lure end, effectively once poured the lure had enough plastic to fill itself almost 2/3 again. Funnily enough the hotter and slower I pour/inject the less dimples I get perhaps the thinner plastic fills better and allows the air to work itself out of the baits so you only have to worry about the plastic shrinkage factor. Quote Link to comment Share on other sites More sharing options...
siebler_custom_baits Posted March 7, 2004 Report Share Posted March 7, 2004 O oK i didnt see 2 piece mold. I also havent poured in 2 piece all that mush. Quote Link to comment Share on other sites More sharing options...
