The extruder gears of the K8200 / 3Drag requires lubrication, which unfortunately causes debris to fall down on to the printing plate.
This gear cover is intended to keep things cleaner.
- On request, I've added a lid.
- After about 270 downloads I had to republish the "fixed" files as their thumbnails somehow disappeared. They are of the same date and version as before.
Slic3r reported the initial files as manifold, and I printed them without any problems.
The files marked as fixed have been run through Netfabb, as there were reports of the initial files being non manifold.
I have not printed the "fixed" files myself.
Note: These parts need to be scaled to 1/10. (It's a Sketchup design, and Sketchup doesn't work well with small geometries.)
Update: For the lid, please read a bit further down.
This is a two part design, of which the mount is universal.
One M3 hole on the mount will need to be cleared with a 3 mm drill. (This design makes it easier to print.)
There should be enough wiggle room to allow adjustment of the assembly to fit any mounting angle of the stepper motor. Please let me know if you disagree.
Make sure that your printer is calibrated. Otherwise the nuts may not fit into their holes.
Apart from the plastics you will need:
1 screw M3 x 10 with a rather low profile head. To attach the mount to the stepper.
2 M3 nuts. To put inside the mount before attaching it to the stepper motor.)
2 screws M3 x 12 To attach the cover to the mount. (Update: M3 x 10 will not work well. Sorry.)
The added lid is a tight fit. It will fit with a well calibrated printer, but you might need to use a sand paper on rough edges to make it pop in nicely.
The small locking ridge on the upper side is intentionally oversized. It fits, but locks the lid firmly in place. Please adjust at will.
The lid will stay in place even completely without this small locking ridge .
If your printer settings are a bit too generous with the perimeters, you could try to down scale the lid very slightly to fit. Only down scale X and Y, (with the lid lying on the bed). Leave Z unscaled, or possibly very slightly up scaled.