Covid19mademedoit Posted April 26, 2020 Report Share Posted April 26, 2020 Does plastisol solidify if overheated? What is everyone using as a heat source? I have been using a propane candy burner with an inverted cast iron pan over the flame and then an aluminum pan with a pour spout to melt it. Tips, pointers, criticism welcome. Super newb here. Also, I didn’t consider this at first but how do I prevent air bubbles/voids. Quote Link to comment Share on other sites More sharing options...
Apdriver Posted April 26, 2020 Report Share Posted April 26, 2020 Most of us doing low volume hand molds use a microwave to heat in Pyrex cups. You can set the Pyrex on a griddle or electric type cooking surface to keep it hot between shots. Takes about 2 minutes before you demold. Need more explanation on the bubbles void thing. Are you injecting and getting voids or hand pouring in silicone molds? Bubbles in your baits or bubbles in the plastic in your pot? Quote Link to comment Share on other sites More sharing options...
Covid19mademedoit Posted April 27, 2020 Author Report Share Posted April 27, 2020 I am using the essentials soft plastic kit from do-it molds. It has an injector. About 10% of my senkos have a small void. I was guessing that it was some kind of air pocket. I am very low volume guy too. Didn’t have an old microwave, had burner. If I can keep the plastisol between 320-360; should I expect any solidification in the pot? Thanks for the quick reply btw! Quote Link to comment Share on other sites More sharing options...
Jig Man Posted April 27, 2020 Report Share Posted April 27, 2020 It may be shrinkage. Try injecting slower and keep some pressure for a few seconds. Then over fill the cavity. Quote Link to comment Share on other sites More sharing options...
Covid19mademedoit Posted April 27, 2020 Author Report Share Posted April 27, 2020 Ok, I will. I’ve been keeping notes but will try to avoid mistakes prior to making them if possible. Quote Link to comment Share on other sites More sharing options...
Apdriver Posted April 27, 2020 Report Share Posted April 27, 2020 1 hour ago, Covid19mademedoit said: If I can keep the plastisol between 320-360; should I expect any solidification in the pot? When using your burner with the indirect flame you describe, you should be good to go. You will want to heat it to 350 for the initial heat and then try to maintain it in the low 300’s. This will let you shoot it well but keep your colors from darkening and glitter from bleeding for longer. Some glitters will tend to bleed their color into the plastisol even at 350. I wait to put in my glitter until the plastic cools to 320 after my initial heat, then keep it below 320 or so until I use that batch up. 1 Quote Link to comment Share on other sites More sharing options...
Apdriver Posted April 27, 2020 Report Share Posted April 27, 2020 Covid, take a look at this thread and see if this is what you have in your baits. Quote Link to comment Share on other sites More sharing options...
Covid19mademedoit Posted April 27, 2020 Author Report Share Posted April 27, 2020 That thread nailed it. Thanks!! Looking forward to being more consistent. Quote Link to comment Share on other sites More sharing options...
