I have ordered the rotating mag filament monitor but I would still like to see if this laser monitor can be salvaged. I would also really like to see if a small micro switch could be added for the static filament present state.
I am not great at CAD but this would be the difference.
Get rid of the spring and idler pulley Use a geared MK3 style dual extruder A support at the top and bottom to keep the filament straight and reduce slips due to the filament curve Add a micro switch inline (normally open)Screenshot 2020-08-22 at 8.01.11 PM.png
Screenshot 2020-08-22 at 8.00.28 PM.png
The top gear would use a linear bearing and a stationary 3mm axle based on this assembly:
https://amzn.to/3hpxzbs
I could provide the stp file if anyone knows how one might create the enclosure around this concept?