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Mini Mill X2 Y Axis CNC Conversion
by Shurakair
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This is a CNC conversion for my Little Machine Shop mini mill (3990).
I got the bulk of the design from LittleCareBear's design, but I wanted to make some changes.
Parts needed:
M5x0.80 20mm bolt (7)
M4x0.7 20mm bolt (4)
M4x0.7 nut (4)
M6x1.0 60mm low profile bolt (2)
51101 12x26x9 Thrust bearing (1)
F12-21M 12x21x5 Thrust bearing (1)
20T GT2 pulley
I used the lock nut from my mill to hold the 120 tooth pulley.
Not shown in video
You will also need a GT2 timing belt
Closed Loop L=280mm W=6mm 140 Teeth Rubber Drive Belt (1)
The two holes on the top of the bearing block are so you can oil the thrust bearings without taking it all apart. Use a short M4 for the big bearing port and a short M3 for the little bearing port.
X Axis: https://www.thingiverse.com/thing:3531440
Z Axis: https://www.thingiverse.com/thing:3531725
https://youtu.be/LFsKt6lTTq4
I got the bulk of the design from LittleCareBear's design, but I wanted to make some changes.
Parts needed:
M5x0.80 20mm bolt (7)
M4x0.7 20mm bolt (4)
M4x0.7 nut (4)
M6x1.0 60mm low profile bolt (2)
51101 12x26x9 Thrust bearing (1)
F12-21M 12x21x5 Thrust bearing (1)
20T GT2 pulley
I used the lock nut from my mill to hold the 120 tooth pulley.
Not shown in video
You will also need a GT2 timing belt
Closed Loop L=280mm W=6mm 140 Teeth Rubber Drive Belt (1)
The two holes on the top of the bearing block are so you can oil the thrust bearings without taking it all apart. Use a short M4 for the big bearing port and a short M3 for the little bearing port.
X Axis: https://www.thingiverse.com/thing:3531440
Z Axis: https://www.thingiverse.com/thing:3531725
https://youtu.be/LFsKt6lTTq4
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