@lo-fi, I just wanted to say thanks for this design! I have two different MFM's (a 1.7 and a 1.7b), using this mount has actually made the 1.7b useful and reliable. Before switching to this mount, I honestly just kept the MFM disabled and used a microswitch in front of the MFM for filament monitoring. I always wanted to get the sensors working reliably, though I never could get consistent performance out of them. The other day I decided to try troubleshooting them again and came across your post here. Wow, what a difference. Thank you again so much for actually making my sensor useful.
I hope that this model will be added to the doc page for the MFM when you and Phaedrux think it's ready. I think there are probably other people who will appreciate it too.