Vacuum Forming .25 HDPE 

Good starting idea. I think your loosing too much heat from the side, and think that might be why your HDPE sheet is getting hotter in the center (indicated by the clearness). I've successfully modified a top for my 70 gal chicken feeder with the top/center section of a 220 gal IBC tote (That I cut up for a fish breeding tank.). IT WAS A PAIN IN THE ARSE, until I realized that I wasn't heating the HDPE evenly and then was very easy. However I was only having to heat the edge of the HDPE to form a lip (to prevent water from getting inside with the chicken feed.) over the edge of the 70 gal container and was using a heat gun instead of a vacuum former, but I learned more than I'd thought about shaping HDPE. Hope you've had better success since.

So you can't (easily) vac-form .25 HDPE? Then put that in the heading and save everyone the time wasted in watching this....

So, no actual vacuum applied, way too much heat, and yes, it fails.

Thank you for sharing.

re-tittle "Vacuum Forming .25 HDPE, FAILED"

Has this vid always been silent?

I watched hoping to have a solution, but mine turned out way better. Still not useable.

20.550 minutes later........

So I take it, this type of plastic don't work very well.

taztoza test....kakakora test.....was ist das??!!!!....wat is this????......ist stupidtoztoza....hhh

херня какая то