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Editing Step 21 —

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Ensure that the end-stop wires are clear of the belt path at the top & bottom of the assembly.

Use the body of the stepper motor to press down tensioning the belt.

Note that you don't want the belts to be so tight you can pluck them like a guitar string. The more you tighten the belt, the harder the motor has to work in order to move the carriage.

When you are happy with the amount of tension that you have on the belt, tighten the (4) M3x10 machine screws.

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