thingiverse
These are replacement fittings for the 3/8 and the 5/8 yellow jacket HVAC pipe bender. I used PLA at thirty percent infill with no issues, the square fitting is a little loose but it works fine
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This STL file is compatible with most FDM 3D printers (Creality Ender 3, Prusa MK3S+, Bambu Lab, etc.) and resin printers (Elegoo, Anycubic). Check the original page for recommended print settings and materials.
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