How could I shrink some 2''PVC pipe

Guss · 21st February 2004, 02:51 AM

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...

chops · 21st February 2004, 03:42 AM

Why?! What are you trying to make? Is it for a port?

Guss · 21st February 2004, 03:48 AM

Yeah, I want to make a flared port out of a normal pvc tube. I need ideas...

454Casull · 21st February 2004, 04:18 AM

A tapering flare? Hmm...

Guss · 21st February 2004, 04:37 AM

Dunno, its not so malleable, I think it should be done by heating the pvc but I dont know how I could do it.

KevinLee · 21st February 2004, 05:00 AM

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

SY · 21st February 2004, 05:02 AM

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.

Chris8sirhC · 21st February 2004, 05:09 AM

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.

Guss · 21st February 2004, 05:14 AM

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 ?

asauer · 21st February 2004, 06:03 AM

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.

21st February 2004, 02:51 AM	#1
Guss diyAudio Member Join Date: Jun 2003 Location: Montreal	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...

21st February 2004, 03:42 AM	#2
chops diyAudio Member Join Date: Apr 2003 Location: St Pete, Florida	Why?! What are you trying to make? Is it for a port? __________________ Charles

21st February 2004, 05:02 AM	#7
SY diyAudio Moderator Join Date: Oct 2002 Location: Austin, TX Blog Entries: 1	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. __________________ "...we stumble and get up, we are sad, confident, insecure, feel loneliness and joy and love. There is nothing more; but I want nothing more.” - Christopher Hitchens 1949-2011

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21st February 2004, 03:48 AM	#3
Guss diyAudio Member Join Date: Jun 2003 Location: Montreal	Yeah, I want to make a flared port out of a normal pvc tube. I need ideas...

21st February 2004, 04:18 AM	#4
454Casull diyAudio Member Join Date: Jan 2004 Location: Toronto, ON, Canada	A tapering flare? Hmm...

21st February 2004, 04:37 AM	#5
Guss diyAudio Member Join Date: Jun 2003 Location: Montreal	Dunno, its not so malleable, I think it should be done by heating the pvc but I dont know how I could do it.

21st February 2004, 05:00 AM	#6
KevinLee diyAudio Member Join Date: Oct 2002 Location: Winnipeg MB Canada	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

21st February 2004, 05:09 AM	#8
Chris8sirhC diyAudio Member Join Date: Jan 2004 Location: Greenville SC	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.

21st February 2004, 06:03 AM	#10
asauer diyAudio Member Join Date: Jun 2003 Location: Indiana	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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