Short video of what mistakes I made and what problems I encountered while building my homemade cnc router so hopefully you can learn from my mistakes.
for my cnc i use the following things:
17mm plywood
20mm supported rails and SBR16 bearings on x-axis
16mm unsupported on y-axis and z-axis with SC16 bearings

12x2 leadscrew on x and y axis with 1:2 gear ratio (t2.5 gears 10teeth and 20 teeth)
t2.5 belt drive on z axis

nema 23 motors and TB6560 drivers
arduino uno with grbl 1.1

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