wishn4fishn Posted March 20, 2017 Report Share Posted March 20, 2017 I have the top inject 639 and for the life of me I cannot get the ribs to fill out right. I have tried heating the mold, shooting the plastic hotter and cooler, and holding pressure for various amounts of time, and injecting at different speeds. Quote Link to comment Share on other sites More sharing options...
Frank Posted March 21, 2017 Report Share Posted March 21, 2017 Just by the look of the baits it looks like the plastic has some lumps in it. For that mold and color you will need to shoot slow and give it a good push at the end to fill out the tail. Some colors are funny that way. You will have much more difficulty shooting this mold if you use small batches. Quote Link to comment Share on other sites More sharing options...
RTM Posted March 21, 2017 Report Share Posted March 21, 2017 I have plenty of those molds and have no issues. How tight are you clamping it? Do not clampbit tight. I normally clamp around 8 single cavities like that together with a wood style lamp and that's good enough. It ain't color and heating the mold is not gonna do anything either. Quote Link to comment Share on other sites More sharing options...
mark poulson Posted March 21, 2017 Report Share Posted March 21, 2017 Would spraying the mold with PAM help it fill better? I find it does with my POP molds. Quote Link to comment Share on other sites More sharing options...
wishn4fishn Posted March 22, 2017 Author Report Share Posted March 22, 2017 Thanks guys. Gonna give what you said a try and see what happens. Quote Link to comment Share on other sites More sharing options...
wishn4fishn Posted April 5, 2017 Author Report Share Posted April 5, 2017 Well guys I tried everything you suggested and still can't get this thing to shoot right. It was a little better with a different color. Quote Link to comment Share on other sites More sharing options...
POV_Fishin Posted April 13, 2017 Report Share Posted April 13, 2017 On 4/4/2017 at 8:59 PM, wishn4fishn said: Well guys I tried everything you suggested and still can't get this thing to shoot right. It was a little better with a different color. Well let's get some information and see if we can help you a little more. What temp are you shooting at? Any salt? What plastisol are you using? Does this happen when the mold is cold? Have you cleaned the mold thoroughly? Are you keeping the mold topped off until it's set up? 1 Quote Link to comment Share on other sites More sharing options...
