Uploaded April 2026 | Updated September 2026, 2 weeks ago

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In this step you’re installing the Z-axis.

Setting the correction position of the Z-axis limit switch. Bottom out the sensor against the Z-axis ball screw nut, back off one rotation.

Tip: Thread the sensor nut onto the sensor before you install it into the Z-axis.

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Next Step "Spindle"
youtu.be/1kXOJ3_c08A

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Learn more
Videos act as overviews for the assembly process, and were built to supplement online instructions. Be sure to watch this video AND read any appropriate online instructions. A parts list for your AltMill 4x8 will be online too.

AltMill 4x8 Assembly Help: bit.ly/41yb2Si
AltMill 4x8 Product Page: bit.ly/3PwRv25
gSender CNC Interface Software: bit.ly/4bFUgXl

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