Filament run out sensor top mount and guide
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Are you tired of draging filament in run out sensor? Try this.
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This is a slightly improved holder for the filament run out sensor used by Creality 3D printers (CR series). I included a version with a lower guide and with both a lower and an upper one. I used 625 bearings (16,5,4), I think they are the ones used in V slot rollers. I included STEPs and Fusion 360 files so you can make changes. I am using this modifided cover for sensor: https://www.thingiverse.com/thing:4840676
Parts:
2 - 3x 625 Bearings
Filament sensor
Printed parts
2x M3 6mm screws
2x M4 10 - 15 mm screws
4x M3 15mm screws (stock from run out sensor mount)
2x M3 T-nut
1x M5 25mm screw
1x M5 nut or locking nut
Printing:
0.16 - 0.28
20 - 40%
0.4 nozzle
3 wall diameters
PLA or PETG
Post printing:
- press fit sliders on bearings.
- screw base on the frame with 2x M3 T-nut and 2x M3 6mm screws
- screw filament sensor in place with 4x M3 15mm screws (stock from run out sensor mount).
- press fit and screv bottom bearing with 2x M4 10 - 15 mm screws.
- screw the last bearing in plase, but dont forget to put the filament guide first.
- you can add some small rubber band so the filament will stck to bearing and the motion will be smother.