How to Bend a PVC




Introduction: How to Bend a PVC

I need to bend a PVC conduit in one of my project. Checking on internet about how to bend a PVC, they will tell you bend with baked sands fill into PVC and cover both side to get sands do not come out......

First, I don't have any sand in my hand at that moment, second, fill hot sands into whole of the PVC, I believe that is a hard job for me. Anyhow I need a more simple way than fill sands.

I don't expect a professional job. I only want the PVC does not kink after bending and still have inner space to go wires. I used the things what I have at my hand - A HAIR DRYER and A DRAIN AUGER

Step 1: Tools

A hair dryer and A 1/2" drain auger.

Step 2: Put Auger in PVC and Heat Bending Area

Insert the drain auger to the PVC bending area to prevent kink. The 1/2" auger is smaller than the inner diameter of the PVC, but it is ok for my project, at least, it will get enough inner space to go through wires.

Heat outside of the PVC with the hair dryer. The hair dryer is not a very hot tool. Heat little bit longer time is needed. Don't over heat. Heat and Bend little by little.

Step 3: Bending

I bend it on a piece of trunk to try to get more or less 2" arc radius. The trunk is ugly, but it works for me. Repeat heating and bending several times to get the final angle. Repeat more times will get much better arc shape (I'm impatient. So the bending job looking is not so good). Don't over bend the angle. It is difficult to bend it back without kink.

Step 4: Drawing Out the Auger

After get the needed angle, draw the auger out. It is much easier than sands work. For me, it is a no cost and easiest way to get my project bending.



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    13 Discussions

    Very nice instructable! I have known about the sand trick but never thought of using an auger. Great idea!

    What does the auger or spring do? Is it to weight the pipe and pull it down at the bend?

    3 replies

    It prevents the pipe from collapsing or Pinching as it is bent.

    Keeps it open inside.

    Thank you so much for that reply. I feel like a dill for not working that point out . :-)

    Don't feel that way.

    We all at some time will draw a total blank on why things are done one way or another.

    At 70 I have had many, but at the same time I have seen easier or better ways to do things also.

    Everyone does.

    Keep an open mind learn as many different things as possible be it mechanical, electronics, cooking, sewing or anything.

    You will find many things overlap in how you do things.

    Good luck and long life


    Thank you! I agree with you completely. Sometimes there just isn't time for sand or even running to the store for the right sized spring. But I always have a drain auger with me and if my customer doesn't have a blow dryer I can always use the trusty torch! Heck, now I'll make sure I have a heat gun with me.

    This is brilliant in its simplicity and effectiveness; I always suspected it could be done but I just didn't figure it out. Thank you!


    2 years ago

    If you have the time and money, go to a hardware store or your favorite home improvement store and get a door spring that is the right size to just fit inside the pipe. It doesn't have to be a long spring, just long enough to make the bend. Tie a string to one end of it so that you can lower the spring down to where you want to make the bend. With the spring inside, you can then bend the PVC pipe without heat. That's right, with the spring you don't need heat to bend the PVC pipe! I've done it several times. Works great!

    1 reply

    Another heat free way is to buy a conduit bender. You have to go oversize. But then that kind of goes against the spirit of Instructables doesn't it?


    2 years ago

    Fill the pipe with sand and cap both ends, then go at it with a heat gun, the sand fills the pipe and transfers heat, meaning that it won't crimp when you bend it and the plastic is brought to class transition temperature more evenly.

    Next time, if you have more time and patience lol, if you will heat a longer section and bend it in a larger radius it will be less likely to kink and easier to pull the wires through. Good job though!

    1 reply

    Thanks for your comment! That is really my first time to bend a PVC and no idea about what radius is better. I believe bend in a larger radius will also have better looking.

    Innovative and inexpensive. Very good thinking! I like this better than sand I think, for me too.

    Nice! I've seen this done with sand too. The sand was heated with a heat gun and poured into the PVC. The hot sand made the PVC malleable while filling the void, eliminating the kinks.