PTFE Adapter for PC4-M10 for Drybox

The part here is for use with a drybox such as a polybox where the filament passes through a hole in the drybox wall. There is a long and short threaded version for wall thicknesses.

I kept the main shape and exterior look of the grip on the outside but changed these:

• Changed the PC4-M10 screw threads from 1.5 to a 1mm thread spacing 
• Made the top part outer walls a bit thicker (~15mm diameter) for strength 
• Redesigned the bottom plastic screw parts threading size to add some extra space/tolerance: there are fewer and larger threads (9 larger threads instead of 11 smaller ones) so they are easier to thread and stronger
• the filament hole in the bottom part is a tiny bit larger from 3.0 to now 3.25 diameter and also chamfered
• A alternate longer bottom part is provided for holes that are greater than 2mm in depth. In fact I would suggest using this longer part now unless you are going through a polybox or drybox thin sheet of plastic.

I printed in PETG with a 0.2 layer height and 3 perimeters with no support or brim. Print the top and bottom individually or print complete objects (print settings/output options/complete individual objects - see the .3mf) to reduce stringing. I was able to rethread the bottom with a larger thread size and added offsets of one .1mm and shaved off a little of the pointed thread parts a bit to improve the plastic threads.

If the hole deeper than 3mm use the just added longer base which adds 3mm of length to the screw base.

See my colllection called used on MMU for all the parts i use in my MMU setup including some things that add hills to the filament path to ensure a retraction postion that has successfully prevented load errors and filamant grinding on the idler.

My latest path design -  https://www.printables.com/model/555238-mmu3-filament-path-design

I also use these items:

Short spacer bar  - https://www.printables.com/model/460874

Riser and couplers - https://www.printables.com/model/432647

PTFE Angle bracket  - https://www.printables.com/model/470374

(New) - First part of a major filament path redesign that will see many of the parts above get tweaked - PTFE Hanger/friction/extendor - https://www.printables.com/model/551257

Other PTFE tube items:

Strain relief circle for PTFE tube routing from Polybox
https://www.printables.com/model/418131

(includes a clamp that works with the item below)

PTFE tube with PC3M10 1mm threaded top frame 'Fishing Rod' connector for MK3S printer
https://www.printables.com/model/428973

MMU2S 'Viking Boat' Rear PTFE tube curved connector for 5 PTFE tubes
https://www.printables.com/model/428281