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End-to-end tutorial on how to modify China 3020 desktop CNC machine to professionally mill PCB with 10mil tracks tolerance.
Part 2
How to modify China desktop 3020 CNC machine to achieve confident 10mil pcb milling accuracy
00:00:01 Choosing China desktop CNC sample for modifications
00:01:25 Detailed overview of chosen Desktop 3020 CNC machine
00:07:38 Linear guides and bushings tolerance to achieve 10mil PCB result
00:09:49 Spindle for PCB milling
00:14:37 Spindle driver
00:15:53 Spindle collet and collet nut for minimum runout
00:16:55 Balanced collet nut
00:17:40 Fatal error of z axis and how to deal with that.
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