Bountiful Waters Posted November 24, 2007 Report Share Posted November 24, 2007 I am pouring the 6 inch Dels T Stick. I am getting dents in at least 2 out of 4 baits each time I pour. I have tried slowing down, thinner stream, etc.. I have read other suggestions on the forum, but cannot prevent them. I assume it is because it is such a bigger bait and more plastic involved. Any other remedies? Thanks Quote Link to comment Share on other sites More sharing options...
bssmstr Posted November 24, 2007 Report Share Posted November 24, 2007 Have you tried warming the mold B4 you pour? Quote Link to comment Share on other sites More sharing options...
Bountiful Waters Posted November 24, 2007 Author Report Share Posted November 24, 2007 I have tried both. Poured when warm or cool. I think the plastic is pulling down due to the weight of the salt in this larger bait. I just finished a triple pour in that mold and had no dents. When pouring one color, I may try pouring it half full and then pour the rest after a short time. Quote Link to comment Share on other sites More sharing options...
SwampBaits Posted November 24, 2007 Report Share Posted November 24, 2007 I've only noticed dents when pouring hot plastic to fast into a very hot mold. Quote Link to comment Share on other sites More sharing options...
Tubeman Posted November 25, 2007 Report Share Posted November 25, 2007 I might depend on your plastisol brand as well...some shrink more than others. Quote Link to comment Share on other sites More sharing options...
Green_Fingers Posted November 28, 2007 Report Share Posted November 28, 2007 I have to agree with swampbaits, the only time I got any dents is when pouring into a hot 2 piece swimbait mold, the first few pours were fine but after the mold had absorbed the heat from the first few pours, the dents started to appear. Simon Quote Link to comment Share on other sites More sharing options...
saint308 Posted November 28, 2007 Report Share Posted November 28, 2007 Try to slow down the pour. That will allow the gas to vent out and not get trapped. Saint. Quote Link to comment Share on other sites More sharing options...
carolinamike Posted December 3, 2007 Report Share Posted December 3, 2007 I have just recently been warned about this problem. I am having some large aluminum molds made. The gentleman that is making my molds said that if my plastic was too soft that it would dent. This could be what he was talking about, in fact I'm sure it is. I am wondering whose plastic and what formula you are using. Maybe a little hardener will solve your problem. Sorry I am just now responding, I just about missed this one. Quote Link to comment Share on other sites More sharing options...
Bountiful Waters Posted December 3, 2007 Author Report Share Posted December 3, 2007 I have determined that when the molds are very hot, they dent. I use LC plastic. I may try the harder plastic next time around, until then I just have to take a break between pours. Quote Link to comment Share on other sites More sharing options...
Angler310 Posted December 3, 2007 Report Share Posted December 3, 2007 I have the same mold and have the same problem. I sent the mold back to Del and had them Vented. I'll let you know the out come this week. I am in the final phase of completeing a new pouring station and should be pouring by Wednesday. I'm anxious to see if venting the molds is going to work. Mike Quote Link to comment Share on other sites More sharing options...
Vodkaman Posted December 4, 2007 Report Share Posted December 4, 2007 Could one of you guys post a pic of the mould and a dented casting. This would help me and many others understand the problem. Sorry to impose, but I am here to learn. Many thanks. Quote Link to comment Share on other sites More sharing options...
tubinator Posted December 4, 2007 Report Share Posted December 4, 2007 Two things can cause this "dent" problem 1. mold is too hot 2. plastic is too hot. Try drilling a hole in the aluminum mold to allow a thermometer, then you will be able to keep the mold at a "working temperature". The hotter the plastic is when you pour the more shrinkage you will get, also the softer a plastic is the less dense it seems to be, this also seems to lead to faster cooling rates along with more shrinkage.Harder plastic is more dense and will cause the molds to heat up faster.Venting the molds in the area of the dents will help some, because it will help to cool that area, but overall it is better to find the working temp. of that particular mold, and then to pour enough molds to keep all the molds in their working temp range. Quote Link to comment Share on other sites More sharing options...
