PTFE Bowden Magnetic Coupling for PC4-M6 for embedded Magnet with optional clamp
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This is a magnet coupling, using 2 sets (opposing sides) of 3 6x3mm round magnets and a PC4-M6 each.
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This is a magnetic coupling for connecting PTFE bowden (or reverse-bowden) tubes together. Use this to have quick-disconnects between the printer and filament drybox etc.
The built-in threads are M6, so you can use the common PC4-M6 Pneumatic Connectors.
Use 6x3mm round magnets (6x2.8mm should also work). They are inserted before layer 25 during the pause in the 3mf. You probably don't need glue under the magnet, but you might want to add some CA glue to prevent the nozzle from attracting the magnet. Also be aware to have your polarization straight. Each coupling has to have ONE SHARED polarisation and the other one should have the opposite direction. I use my trusted helpers for my gridfinity magnets to make sure to set them right.
If you notice the couplings come apart due to bending forces that angle the couplings against each other, just add one of the provided clamps, they easily triple the holding power (my guesstimate, no way to prove it with the tools I have) in exchange for a little less ease of use.
The Fusion (360) file is added if you would like to make any changes.