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friendica (DFRN) - Link to source
Flirting with limits (illustrated)
3D printer with a tall printed part, and the extruding nozzle at the same level as the top of the part.
Same printer taken from another angle to show the extruder's Z axis slide with the Z+ limit switch.
Close view of that limit switch, showing a clearance of less than 5mm with the Z slide
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