Centroid Community CNC Support Forum

Acorn will use the steps per rev first before the revs per inch. So if you tell it to move a certain distance and you have these settings wrong it will default to the steps per rev that you have entered in the wizard... Almost there. Acorn operates in steps. People operate in inches or mm for those...

What do you have your motor steps set to on the drives? In the Wizard?

You need at least 3 motor revs per inch of travel for correct positioning, so you need add a belt drive between your motor and screw, or replace your screws with a smaller pitch.

Just setting the revs/inch to 3 will not work

Make sure your spindle motor wires are properly shielded. Separate the spindle wiring from control wires and if they have to cross, make sure it's at 90 degrees.

If the motor drives are not showing errors for list steps, then it is probably a noise issue. Try re-running your program with the spindle off.

You might have a look at parameter 1.

All Acorn schematics are here. Use the search function to narrow it down to your Leadshine drives:
https://www.centroidcnc.com/centroid_di ... browse.php

I cut 0-80 and M1 all the time. You need an extremely sharp tool and very small infeeds. As for cutting into your shoulder, where are you setting your Z0 for the threading tool. If you use the point of the tool, you'll have to reduce the ending Z by 1/2 the width of the tool. I set my Z0 to the side...

The Centroid minor diameters are only valid for threading tools with the correct root flat or radius. If you are using a sharp V threading tool, you'll have to subtract another 0.108 * pitch from the minor diameter. You need to adjust the minor diameter in the thread details page and not the tool we...

Just one point I'm sure you are aware of. The X-axis will not have an index pulse. The index pulse will be on whatever axis the SCALE is attached to.