I needed to straighten 1 4 copper tubing for an intercooler core.
Tricks for straightening curved vinyl tubing.
Any of that tubing i ve fooled with in the past is dead soft so it should straighten pretty good without a lot of springback.
Clean your tumbler with rubbing alcohol and let dry.
You have to take into account the waste where you clamp it.
It stretches it out a bit as it straightens it.
Turn the burner on high to allow the water to boil.
Design and cut out vinyl decal with a cutting machine or buy a decal weed off the extra vinyl.
Probably would be best to make the v s with a couple 45 cuts and then nibble out the wood between the v s to a depth that would create flats at a depth equal to half the tube diameter so that the dies would contact the top and bottom of the tube as well as the quarter points along the v s.
I heard about this and decided to give it a shot.
Fourthing hot water but depending on the weather in your area sitting it out in the sun on a hot day for an hour or two might even be enough works even better if you can find a patch of asphalt or other dark surface.
How to straighten pvc tubing.
Apply transfer tape to your decal and scrape it down do not remove paper backing yet.
Thirding hot water but please use tongs.
It is fine for every other piece of tubing but this i need straight.
Then pull like an old style parking brake.
The heat will soften the tubing allowing you to reshape it into a long straight line.
Boil the tubing in the water for five to 10 minutes.
Straightening vinyl tubing for a observation hive entrance tube.
It also work hardens it a little and keeps it s shape.
An old steamfitter trick is to clamp one side down then clamp the othe side to the bottom part of a lever.