That's a tempting idea. Though, I never liked the way the MK3 tensions the belt by not snugging the idler mount to the frame. There are some other options on thingiverse. I think this one is my favorite, but since you have to reach under the frame to access the tensioner, unless you've moved the display it is in the way.tim.m30 wrote: ↑Feb 14, 2019 5:13 amI just ordered the full upgrade kit (with printed parts because PETG and I don't get along) and after reading the MK3S kit manual I presume the Y-Axis tensioner change is in some ways a downgrade: it places the adjustment well under the moving bed where you can't see the screw you need to adjust. I'll probably pass on that change and just install the extruder portion concerning the new filament sensor.
Yes, I have too noticed these two parts to be missing from the upgrade batch. You can always buy the extra screws at any local hardware store. These really don't have to be Prusa branded.
Not necessarily true here in the Great USA, Land of Imperial Units. But, for us USAians we have McMaster which has M3 machine screws available in more variations that I know what to do with. Hex and Nyloc nuts are also available in M3 size. Unfortunately, they don't carry M3 square nuts, the smallest they carry is M4. But, I've seen someone mention somewhere that the M3 square nuts can be found at Amazon.
FWIW the $20 option DOES come with 300g filament for part printing, so it's not as bad of a deal as it initially sounds for a bearing, sensor, wire, and some magnets.
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