Hillbilly voodoo Posted June 18, 2022 Report Share Posted June 18, 2022 New to this whole injecting soft plastics thing and slowly learning as I go I have a 5.6 prey bait swimbait mold and I can’t figure out why some are turning out with a hollow nose. Doesn’t matter if I am shooting one or two colors plastic temp is in the 360 range. I keep pressure on the injector for about 30 seconds after the mold feels full. Molds are warmed up on a hot plate before shooting. It’s a single cavity mold so what is this newbie doing wrong Quote Link to comment Share on other sites More sharing options...
Dink Master Posted June 18, 2022 Report Share Posted June 18, 2022 Lower the temperature of your plastic. About 320* Hold pressure for only 10 seconds. Make sure the sprue has not harden or sealed up. Top off sprue with hot plastic from your injector and or cup. Get a Sprue Extender. Sprue Extender gives large cavity molds additional hot plastic to draw from as the mold cools. 1 1 Quote Link to comment Share on other sites More sharing options...
Hillbilly voodoo Posted June 18, 2022 Author Report Share Posted June 18, 2022 Thanks I will try your suggestions tomorrow Wouldn’t the laminating block also work like a spur extension? 1 Quote Link to comment Share on other sites More sharing options...
Apdriver Posted June 19, 2022 Report Share Posted June 19, 2022 44 minutes ago, Hillbilly voodoo said: Thanks I will try your suggestions tomorrow Wouldn’t the laminating block also work like a spur extension? Not really. The ports on the lam block are small and the seal not so good. Mold would prolly draw air as opposed to plastic. Dinkmaster’s got you covered. 1 Quote Link to comment Share on other sites More sharing options...
Hillbilly voodoo Posted June 19, 2022 Author Report Share Posted June 19, 2022 7 minutes ago, Apdriver said: Not really. The ports on the lam block are small and the seal not so good. Mold would prolly draw air as opposed to plastic. Dinkmaster’s got you covered. Thanks for the answer 1 Quote Link to comment Share on other sites More sharing options...
Dink Master Posted June 19, 2022 Report Share Posted June 19, 2022 Watch and listen to what this guy does in this video. He loves to talk, his technique is at the 22:50 mark. Hope this helps. Good luck. https://www.youtube.com/watch?v=aglkJ1BO-nQ 1 Quote Link to comment Share on other sites More sharing options...
Dink Master Posted June 20, 2022 Report Share Posted June 20, 2022 On 6/18/2022 at 4:29 PM, Hillbilly voodoo said: Thanks I will try your suggestions tomorrow Wouldn’t the laminating block also work like a spur extension? NO - Make sure to warm your Injectors & Laminating Block also. Plastic solidify/hardens quickly in a cool laminating block. 1 1 Quote Link to comment Share on other sites More sharing options...
Hillbilly voodoo Posted June 21, 2022 Author Report Share Posted June 21, 2022 5 hours ago, Dink Master said: NO - Make sure to warm your Injectors & Laminating Block also. Plastic solidify/hardens quickly in a cool laminating block. I did warm the laminating block but not the injector I did not get to try your advice before having to go beck to work for a set. But I will on my next 5 off Quote Link to comment Share on other sites More sharing options...
Dink Master Posted June 21, 2022 Report Share Posted June 21, 2022 Cool, good luck. Have you watched these videos? https://www.youtube.com/watch?v=eVtfDFUlDD4 https://www.youtube.com/watch?v=QrbFT3GOmwY 1 Quote Link to comment Share on other sites More sharing options...
Hillbilly voodoo Posted June 27, 2022 Author Report Share Posted June 27, 2022 Well I did some experimenting with the advice and got the problem solved Reducing hold time to 10 seconds and lower the temp on the mold itself did the trick thanks 1 Quote Link to comment Share on other sites More sharing options...
