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JimtheJib
10-18-2005, 08:34 PM
can PVC be bent with a tube bender? or does that only apply to metal tracks?

pookie_old
10-18-2005, 08:39 PM
:cry:

Daniel Skubal
10-18-2005, 08:42 PM
I've heard of it being melted by boiling water.... but that's a ridiculous amount of work, and I don't think it's very consistent.

J.R. Hudson
10-18-2005, 08:49 PM
Yes it can. You need a blowtorch.

Daniel Skubal
10-18-2005, 09:00 PM
lol it's gotta be diffused heat though, having a direct source on one pinpointed spot can't be accurate.

JimtheJib
10-19-2005, 06:51 PM
sounds difficult and extreme.

AHH.

JimtheJib
10-19-2005, 06:53 PM
has anybody actually used this method of bending PVC?

if i managed to get my hands on a reliable heat source how should i proceed?

and lastly how much should the pvc be bent for optimum curvature, and would this weaken the pvc?

thanks, sorry for all the questions

blckhawk542
10-19-2005, 06:57 PM
Why would u want to bend PVC in the first place?

JimtheJib
10-19-2005, 06:59 PM
so the tracks for my home made dolly could turn, allowing more flexible and interesting shots.

alex

JimtheJib
10-19-2005, 07:28 PM
yes...quetsions.

stevesnj
10-19-2005, 07:30 PM
A heatgun and a jig seems like the best way but I found these also...

http://billpentz.com/woodworking/PVC.html

http://www.imperiumlarp.org/www/Starstone/editorials/pipe_bending.htm

ICED OUT!
10-19-2005, 07:50 PM
Caution

Before getting started you need to know that there is a potential of letting off some very dangerous dioxins with other toxic and potentially cancer causing gasses, so you must work in a well ventilated area and should wear a good respirator. Moreover, the result will not be as strong as it was before you made your changes.

high8
10-19-2005, 09:15 PM
oh my god! the questions...
isnt that what we are here for?

wbfish
10-19-2005, 09:26 PM
When I dented my plastic sea kayak the manufacturer first recommended I try hot rags on the dent to draw it out, when that didn't work they told me to use a blow torch. Neither of these turned the concave into a convex but the kayak became very soft and malleable. So I would think if you had a basic form or jig that was the basic finished shape of the track you could easily bend it. Try a section. Good luck.

Logan LeBlanc
10-20-2005, 12:54 AM
This idea seems somewhat plausible. Why not get a smaller piece of electrical pipe, slide it into the PVC pipe, plug up the ends (make sure to leave enough room for the PVC to get hitched), and THEN bend it with a standard pipe bender. They'd be a little heavier, but it seems like it would work. Hell, the weight may be a bonus feature; keeps the pipe ON THE GROUND!!!

235 Studios
10-20-2005, 06:44 AM
Before you proceed you'll want to keep in mind that unless it is a long slow curve your dolly will not work - unless it is one of the smaller ones. The designed that I have seen and built have been the bigger dollies that allow someone to sit on them, and the wheels do not rotate. So tight turns would not be possible. If you have one of the designs that is just for your tripod you should be fine , probably ...

Dennis Wood
10-21-2005, 05:50 AM
Or you could build one....


http://www.pana3ccduser.com/attachment.php?attachmentid=926&stc=1



(http://www.pana3ccduser.com/attachment.php?attachmentid=926&stc=1)

Ed Kishel
10-21-2005, 10:07 PM
I know you want pvc, but consider this: try calling a local metal supplier and asking them if you purchased some metal tube if they would bend a couple pieces for you.

The worse thing they will tell you is no, but if they say yes you will enjoy it much better that warped pvc

235 Studios
10-21-2005, 10:19 PM
I like that Idea Edweirdo.

Ghalied Williams
10-24-2005, 07:00 AM
Run a rope from one end to the other of the PVC to make a bow - tightening the rope makes the PVC bend.

HansK
10-24-2005, 06:12 PM
I wonder if boiling water would soften PVC enough? You could tie the ends of the PVC with a rope to form a bow at the curvature you want. Plug one end of the PVC pipe. Raise the other end so it's above the plugged end. Then pour boiling water in the PVC until it's filled. While it's cooling, boil some more water. Dump out the now warm water and refill with more boiling water. The PVC might need to be bent in a slighter tighter curvature than you want since it might flex back a bit.

Anyone know if boiling water is hot enough to soften PVC enough?

Logan LeBlanc
10-24-2005, 07:30 PM
The PVC you'd have to use for the tracks would probably be too thick for the water to affect it.

Ed Kishel
10-24-2005, 10:47 PM
this wouldnt work this time of year or in anyother place but here in the southwest, but in the summertime you can put roped off pvc in clear plastic trashbags, the greenhouse effect takes over: it gets over 200 deg in the bag. this probably doesnt help, but thought I'd mention it.