Z-Axis Movement is off by 8 times more than expected

Software
1

I’ve been having a lot of issues with my Z-Axis plunging way too far into the wood. So I spent the day learning about G-code and trying a variety of different programs to see if any of them acted any different. I was finally able to narrow down and repeat the issue; though not sure where I need to look in order to fix it.

In the Z-Axis dialog box, I did the following:

  • I zeroed out the bit to the wood, and it is always very repeatable.
    • On the side of the Z-Axis I marked a line where the zero is at.
  • With each test, I clicked the Go to Zero button and marked on the side of the Z-Axis where the router stopped at.
  • I get the following results with the values shown when I click the RAISE button
    • the router moves 1.5” with a value of 0.2 INCHES
    • the router moves 1.875” with a value of 0.25 INCHES
    • the router moves 2.25” with a value of 0.3 INCHES
    • the router moves 40mm with a value of 5 MM
    • the router moves 53mm with a value of 6.5 MM
    • the router moves 59mm with a value of 8 MM

I was able to get similar results using G-code where I just plunged the router into the wood…

2

change the leadscrew pitch in your config.

this post doesn’t give any information about what you have it configured to be
or what your Z axis is, so other than noting that this setting doesn’t match
your machine, it’s impossible to know what it should be

3 Likes
3

Yup, that’s exactly what it was. I changed it from the default value of 3.17 to 19.8 and now it drills down to within 0.08 mm

2 Likes