How could I shrink some 2''PVC pipe - diyAudio
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Old 21st February 2004, 01:51 AM   #1
Guss is offline Guss  Canada
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Default How could I shrink some 2''PVC pipe

I have the pvc, I want to shrink both sides. And btw should I worry about the diameter I'd end up with to get the correct flare effect? Any idea is welcome...
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Old 21st February 2004, 02:42 AM   #2
chops is offline chops  United States
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Why?! What are you trying to make? Is it for a port?
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Old 21st February 2004, 02:48 AM   #3
Guss is offline Guss  Canada
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Yeah, I want to make a flared port out of a normal pvc tube. I need ideas...
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Old 21st February 2004, 03:18 AM   #4
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A tapering flare? Hmm...
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Old 21st February 2004, 03:37 AM   #5
Guss is offline Guss  Canada
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Dunno, its not so malleable, I think it should be done by heating the pvc but I dont know how I could do it.
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Old 21st February 2004, 04:00 AM   #6
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Hello,

I have had good luck shrinking things by washing in hot water and then an hour in a hot dryer.

I have also had good luck shrinking things by swimming in a cold lake.

Good luck

KevinLee
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Old 21st February 2004, 04:02 AM   #7
SY is offline SY  United States
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You're not going to be able to shrink any normal polymer of that kind of dimension. You might consider making a mandrel, then cover it with fiber-mat/resin to get a custom shaped tube.
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Old 21st February 2004, 04:09 AM   #8
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Back when i was in middle school i constructed a potato cannon, and on some web site someone had used pvc that they had formed somehow to make a missile type projectile, so i know its possible, but it may take alot of searching to find that site again.
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Old 21st February 2004, 04:14 AM   #9
Guss is offline Guss  Canada
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Quote:
Originally posted by SY
You're not going to be able to shrink any normal polymer of that kind of dimension. You might consider making a mandrel, then cover it with fiber-mat/resin to get a custom shaped tube.

Yeah , thats it ! thx :P

The question is, is the fiberglass gonna stick to the pvc ?
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Old 21st February 2004, 05:03 AM   #10
asauer is offline asauer  United States
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I don't think fiberglass will stick to PVC all too well...best bet is to score (scratch) the PVC to a considerable depth and run some coarse sandpaper over the patch the fiberglass is to attach to. Then it will have SOMETHING to hang on to, but not much.
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