OrdBot Z Block
by davr, published
This is a fix for the two z axis threaded rods on an ordbot binding up. Unless they are perfectly aligned, as the axis travels up and down it can bind up causing skipped steps and ruined prints.
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Unscrew the metal block from the frame, and screw this block instead. The threaded rod threads onto the metal block, which sits below the printed part, with its too-big hole. This allows the threaded rod to wobble around without binding up. I believe it will introduce a small amount of backlash into the z-axis, but that's better than binding up and skipping steps.
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