Parametric Pipe Hanger

by Finch, published

Parametric Pipe Hanger by Finch Aug 26, 2014



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I needed to hang a simple drain for a spot cooler away from the supporting wall. So I put this little design together. The defaults create a hanger suitable for 1/2" CPVC. You can edit the dimensions in Customizer or edit the scad file yourself. The part is surprisingly strong.

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The diagonal brace in the middle should go to the other corners. The way it is now the brace is in tension and does little to reinforce the rectangular shell. When done from the other two corners it will be in compression and distribute the forces and increase the load handling ability of the piece.

Hi Discojon, I can't really argue with your logic. So I thought, "What the heck, let's test it out". I printed one part with the brace up at the hook end and one with it down. Parts were in PLA, 3 shells and 15% fill, both printed at the same time. I used an dial indicator to measure the deflection before and after loading the hanger with a bucket holding ~37lb of water for 5 minutes. (see new photos added) I was pleasantly surprised that the parts held the weight with no problem. On two runs the deflection with the original design averaged 0.042". With your suggested design the deflection averaged 0.045 or ~7% more. I then tested your assertion that the brace in the current design "does little to reinforce the rectangular shell" by just cutting out the brace entirely. The part without the brace visibly sagged and deflected 0.144" when loaded with the bucket. So, maybe the brace does something after all. Maybe the oriented filament nature of the hollow brace performs better in tension than it does in compression?

Good work on the testing!

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