How to Bend PVC Pipe Using Heated Sand
Linn from the YouTube channel Darbin Orvar is known for her creative DIY projects that range from woodworking and home improvement to electronics. In this video, she demonstrates a simple, effective way to bend PVC pipe using only heated sand and duct tape — no expensive tools required!
This clever tutorial earned Linn second place in the 2017 Instructables PVC Contest for its ingenuity and accessibility.
The Heated Sand Method
When bending PVC, one of the biggest challenges is preventing kinks that can distort the pipe’s shape. Linn solves this by filling the pipe with sand before heating. The sand provides internal resistance, allowing the pipe to soften and bend smoothly without collapsing.
- Seal one end of the pipe with duct tape to prevent sand from escaping.
- Fill the pipe with dry sand up to the desired section to be bent.
- Heat the sand in a pan until it becomes hot (use a sacrificial pan, as it may discolor).
- Pour the heated sand back into the pipe to warm the PVC from the inside.
- After a few minutes, carefully bend the pipe over a custom jig or form to achieve the desired curve.
This technique works best for smaller PVC sizes such as 1/2” and 3/4”. Larger sizes, like 1-1/4” and above, may require more heat and patience but can still be shaped successfully.
Watch Linn’s full video here: https://youtu.be/AYTFDkX7s24
For more detailed instructions and visual guides, visit Linn’s Instructable on How to Bend PVC Pipe, or check out DarbinOrvar.com for more of her innovative builds.
5 comments
I want to bend the PVC pipe in the shape of a pyramid . Can I make that shape with the heated sand. The point is the biggest problem.
If you are bending Formufit follow my method. I’m bending 1 1/2 dia with no problem.
I use a metal gutter downspout laying on the ground. I place me pipe inside. Put a heat gun in one end of the downspout. The pipe will be like rubber in about 30 minutes. Use gloves. It will burn your hand.
Check your pipe to make sure the end closest to gun is not to close to melt.
Place in your fixture.
No cooking sand.
Too bad she was not using your pipe, just using basic plumbing pipe. Video shows unless you are using small thin wall pipe, it really does not work.
Excellent idea! Can’t wait to try it!
Love the video! may I recommend you trying to use Pro-Gaff Tape in place of Duct tape as Gaff Tape is designed so it will not leave any residue it may save some time cleaning after your molding is completed.
Here is The brand I use: https://sesystems.com/gaff-tape-pts-gt255bk-black-gaff-tape-2-inch-x-55-yards