Hey! This thing is still a Work in Progress. Files, instructions, and other stuff might change!

Customizable PVC Inner Coupler

by Ratmax00, published

Customizable PVC Inner Coupler by Ratmax00 Feb 15, 2013


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PVC joining at different angles, great for PVC frames or any type of PVC builds that require joining. This part glues together and then can slip into a PVC pipe of your choice to hold it in place. Full customization, from a single PVC-to-PVC connection up to a 6 way PVC connection at all types of angles. Have fun with customizer!


Each print should yield two pieces that can then be glued together. Once glued you can connect your PVC to the coupler and glue as necessary. The flange is only to prevent warping if any occurs in your build. You'll need to trim the flange before you try fitting PVC over the part. Happy Printing!

Work in progress:
- Adding more PVC sizes... Even more Added! Some taken away because of crazy size compared to build plate.
- Hollow coupler for bigger PVC builds?
- Add Build Plate for different platforms (easier to see size dimensions)
- Meaningful Comments
- Funny happenings with 1/2" & 2" double that ended in zero
- Change the coupler length to a mm slider? More feedback needed here.
- Get some printed images up.

  • Hollowed out coupler works well, instead of keeping it an inner coupler (that's hollow) have an option to make the hollowed out coupler auto-magically an outer coupler (i.e. pvc pipe fits inside when hollowed out, not the other way around).
  • possibly move the 3rd & 4th couplers independently of each other? (all Chameleon style!)

I haven't test printed the hollowed out build yet, so I'm not sure how it will glue or even if it will.

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I printed for 1/2 inch PVC pipe and I did have to upsize it by 5% otherwise it was loose. Cool design though

Thanks so much for this thing! I've got a couple minutes left to go on the print right now, but it looks good so far. If you ever rev the part, maybe you'd think about adding an option for 3-way configuration? I had to make a 4 way that has a spare coupler shaft that I won't be using. Cheers!

Just posted an updated version and test build images. 1/2", 120° angle, 25mm length. Glued together with some simple tacky glue to test fit within a 1/2" schedule 40 pipe. Check out the pictures to see how it came out.