Creality CR-10 Ender 3 Flexible / TPU filament M10 Thread Bowden Limiter

M10 thread for the pneumatic fitting. Has a limiter to prevent the bowden from hitting the gears (happened to me with original version) but still allows to get very close to them. With this upgrade, it will be way easier to manually feed filament through the extruder.

I printed it with fitting housing facing the buildplate at 0.12 layer height with supports from bed only and got perfect threads.

Remix of: https://www.thingiverse.com/thing:2839306