sticky Posted December 31, 2014 Report Share Posted December 31, 2014 I'm having problems with a different brand of plastisol I'm trying. I bought a starter kit a while back that included a pricier plastisol and found it was very easy to use and some what forgiving. Recently, I caught a cheaper brand on sale and just got around to using it. I heated it just as I have before but it wouldn't gel up. I continued heating it to 350 and it was still runny after cooling. I heated it a bit more and it started to burn and still wouldn't harden. I let it sit for about 10 minutes cooling down in the pyrex and it is still liquid with the exception of a film around the edge of the pyrex. Do you think I got a bad batch? Quote Link to comment Share on other sites More sharing options...
DaveMc1 Posted December 31, 2014 Report Share Posted December 31, 2014 bet you didn't mix it before pouring out to heat it. all plastisols need to be mixed thoroughly before heating as the resins will settle out and cause what you are experiencing. Quote Link to comment Share on other sites More sharing options...
Anglinarcher Posted December 31, 2014 Report Share Posted December 31, 2014 Yep, Dave probably hit the center of that target. Goofed myself one time and forgot. Some brands are better then others about having plasticizers that don't separate, but all do it to some extent. Quote Link to comment Share on other sites More sharing options...
sticky Posted December 31, 2014 Author Report Share Posted December 31, 2014 I shook both bottles for about 15 minutes. Heated it and poured it. It's very runny and very sticky. Shoook it another 15 minutes and heated it. Same thing. I ordered 5 gallons of the other stuff I was using. I guess it's never a good idea to buy plastisol on sale. The only other thing I can think of is to take it to a place with a paint shaker and have them shake it all day for me Quote Link to comment Share on other sites More sharing options...
Apdriver Posted December 31, 2014 Report Share Posted December 31, 2014 Heck, I would contact them and see if they will take it back. You'll eat the shipping but maybe they will send you some good plastic. Quote Link to comment Share on other sites More sharing options...
Jig Man Posted December 31, 2014 Report Share Posted December 31, 2014 I don't shake mine. I have an L shaped coat hanger that I put in a drill. I put it right on the bottom of the plastisol so it gets into the stuff that has settled out. A few minutes stirring equals a long time shaking. 2 Quote Link to comment Share on other sites More sharing options...
Big Ray Posted December 31, 2014 Report Share Posted December 31, 2014 I like that Jig Man. I just use a really long flat head screwdriver to mix my plastisol. Quote Link to comment Share on other sites More sharing options...
Senkosam Posted January 1, 2015 Report Share Posted January 1, 2015 (edited) Most likely a bad batch. Regardless of whether it's soft, medium or salt water in grade, it should pour smoothly and mix uniformly even at 280 degrees. I got LC plastic years ago and the hardner always get hard to mix after settling to the bottom. Even MF can have problems if you get a bad formulation. I use a paint mixer attachment on my drill to try and get more hardner off the bottom in my 5 gal. container. I will always try to buy plastic that mixes easy and stay with it. I like Bear's for that reason. Haven't tried Mr Twister yet. Good suggestion about using a coat hanger for small mouthed bottles like the juice bottles I store smaller quantities in. Edited January 1, 2015 by Senkosam Quote Link to comment Share on other sites More sharing options...
fishon-son Posted January 1, 2015 Report Share Posted January 1, 2015 buy the best first. then you wont have any trouble. but you got to mix it all well....you get what you pay for in life spend the extra few bucks for a better product...and a better bait... Quote Link to comment Share on other sites More sharing options...
alsworms Posted January 1, 2015 Report Share Posted January 1, 2015 Can you actually see hardener on the bottom? I'm betting it's still there and it's just tough to find. As mentioned, with some brands of plastic, shaking just isn't sufficient enough to mix.... especially with the larger 5 gallon plus containers. Another thing I can add is when buying 5 gallon jugs, make sure you mix it really well, then transfer into 1 gallon containers. From there, a little shaking should be good enough......assuming you don't let is sit too long. Quote Link to comment Share on other sites More sharing options...
majic man Posted January 1, 2015 Report Share Posted January 1, 2015 I have used less expensive plastic for years, Its more about the supplier than the plastic.. 1 Quote Link to comment Share on other sites More sharing options...
ipt Posted January 2, 2015 Report Share Posted January 2, 2015 if it came in a bottle and you shook it well, heated to 350 and it didnt turn into solid plastic, i would contact who you bought it from and return it. ive used plastic from almost everyone and havent had any issues like that. Quote Link to comment Share on other sites More sharing options...
SpoonMinnow Posted January 2, 2015 Report Share Posted January 2, 2015 LC plastic forms a solid cake on the bottom of any large or small container after a week. Unless they've changed, LC is not on the list. Too much effort to mix the stuff! 1 Quote Link to comment Share on other sites More sharing options...
walbrown Posted January 8, 2015 Report Share Posted January 8, 2015 Most likely a bad batch. Regardless of whether it's soft, medium or salt water in grade, it should pour smoothly and mix uniformly even at 280 degrees. I got LC plastic years ago and the hardner always get hard to mix after settling to the bottom. Even MF can have problems if you get a bad formulation. I use a paint mixer attachment on my drill to try and get more hardner off the bottom in my 5 gal. container. I will always try to buy plastic that mixes easy and stay with it. I like Bear's for that reason. Haven't tried Mr Twister yet. Good suggestion about using a coat hanger for small mouthed bottles like the juice bottles I store smaller quantities in. Most likely a bad batch. Regardless of whether it's soft, medium or salt water in grade, it should pour smoothly and mix uniformly even at 280 degrees. I got LC plastic years ago and the hardner always get hard to mix after settling to the bottom. Even MF can have problems if you get a bad formulation. I use a paint mixer attachment on my drill to try and get more hardner off the bottom in my 5 gal. container. I will always try to buy plastic that mixes easy and stay with it. I like Bear's for that reason. Haven't tried Mr Twister yet. Good suggestion about using a coat hanger for small mouthed bottles like the juice bottles I store smaller quantities in. Does Mr. Twister sell plastic? Quote Link to comment Share on other sites More sharing options...
Senkosam Posted January 8, 2015 Report Share Posted January 8, 2015 Sorry about that. Spike It sell plastic as well as soft plastic dye. Quote Link to comment Share on other sites More sharing options...
