Pivoting Panel Pass-throughs for 4mm PTFE tube

– edit 15-10-22 - added two flat variants, as well as a M6 M10 variant 

This pivoting pass-through allows to feed an 4 mm PTFE tube through a panel. Typical use: feeding a tube into the printer enclosure or from a filament drybox.  A mounting solution for using with a LACK table (and two of these pivoting pass-through's) is also provided.

I used PLA for everything, but other materials will work as well.
 

There are pivots for 10mm pneumatic couplers (PC4-01), but also 6mm (PC4-M6) and 5mm (PC4-M5). You need pneumatic couplers where the PTFE tube can be fed through. Especially for the  PC4-M5 this is rare, but they exist! Most common is PC4-01 (the 10mm variant).

Also two variants exist for use without any pneumatic couplers, one with a loose, and one with a tight fit of the PTFE tube.

All pivots can be printed without support for the “flat” variant. The “round” variants need supports however.

This shows the 10mm variants: PC4-01. Round on the left, flat on the right.

 

Here are the 5mm and 6mm variants: for PC4-M5 and PC4-M6

Finally the two variants that do not require any pneumatic couplers. They have the advantage, that the pivoting movement is larger compared to the ones using pneumatic couplers.

The “tight”fit.

And the “loose” fit.

Finally you need a nut for each throughput. For a panel, use the small nut. Drill a hole by pre-drilling and then use a step drill to drill a hole that fits. I used 30mm holes. 

For passing through an IKEA LACK table use the tube with two pivots. I use one “loose” and one pneumatic coupler pivot for this. Drilling through an IKEA LACK table is messy. Pre-drill carefully and then drill 30mm holes from both sides and remove the “infill”. The tube makes a clean PTFE throughput, somewhat flexible still.