Spherical port for PTFE tube
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Print-in-place sphere for passing a PTFE tube
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This is a spherical port similar to this one but without a threaded fastener. It is a remnant from a failed project that may be of use to someone. I was trying to develop a horizontal spooling system for the Elite Gourmet dehydrator so that I could dry as I print, but I discovered that horizontal rolling is prone to tangling, so I gave up. It was my first print-in-place design in Fusion.
The port is designed to be held in place by an ASA circlip (Circlip_10-14mm_Shaft.stl) within the 1.6mm thick wall of the dehydrator. The attached picture shows it mounted in a 0.5" hole I drilled. My PTFE is rather thick, so the cylinder diameter is 4.3mm, but I'm including the Fusion file so the parameters can be tweaked.
Printing:
PETG
STRUCTURAL setting
snug support material
2mm brim
After printing, push the PTFE tube through the top of the hole to clean out any brim remnants near the bed (there will likely be a very thin circle you'll need to push out). Then you can rotate the sphere to free it from the print-in-place connection, and it should rotate freely 360°.