Help with knocking on the z plunge

CNC Machines Shapeoko
1

When ever I do a cut out with a 1/8 ball, whenever it plunges down, it keeps knocking.

See video: around the 4 second mark.

2

Hey, I had the same issue on first cut. Tighten your z-axis belt and you’ll be in business

3 Likes
3

Thanks! That was it…

4

Awesome! Happy making!