Is anyone into heatstretching?

[craggy2012]

The last beach ball I heatstretched went from 48inch to just shy of 72 inches.... Sadly the vinyl changed its composition from soft, sticky to a hard almost Cellophane like material. I left it packed away for a few weeks, when I reinflated it again it was really stiff and soon popped. What ever I'd done, the hot water I used had leeched out a lot of the plasticiser

[lilolover82]

The last beach ball I heatstretched went from 48inch to just shy of 72 inches.... Sadly the vinyl changed its composition from soft, sticky to a hard almost Cellophane like material. I left it packed away for a few weeks, when I reinflated it again it was really stiff and soon popped. What ever I'd done, the hot water I used had leeched out a lot of the plasticiser

Did it just spring a leak or did it completely burst.

[craggy2012]

A 1 inch split on a seam opened up...

[lilolover82]

So a rather large leak.

[Jkloon]

I've fixed some pretty leaks (1.5 foot seam split, wing ripped off a swimline duck), a one inch split should be pretty easy

[lilolover82]

How quickly would it go flat

[Jkloon]

A one inch split? A matter of second for a BB

[lilolover82]

Even on a 48" turned to 72" by heat stretch? I figured it'd go down quick, but not instantly.

[Q24heaven]

The one thing that comes to mind with boiling inflatables is leaks in seams? I have thought about doing it, but am worried that something like this would weaken the seams? I would love to do this with my few remaining bop bags.

[MegaInflator]

Yes I am. Don't get many opportunities to do it anymore (limited inflatables season, no work space, no option to work outdoors (exposed backyard/nosy neighbors) ...) but I still like to go over design size!