Been scratching my head for a while now.
When running a test part on my mill, just a 60x60x5mm rectangular square cut on top of a 70x70 aluminum stock, I get an extra 0,3mm in total width.
And it is repeatable.
Using cutter comp for such a big deviation does not feel like the proper way to resolve the issue.
No backlash on the machine worth mentioning.
Running the program a second time, a "complete" spring pass, the cutter never touches the material, so i can´t be because of ball screw load.
So basically, running it in the air, it still gives me the same measurements.
The X-axis has a glass scale DRO installed and when via G00 moving between 0 and 60mm, it hits the values just fine in both directions.
(Haven´t had time to install on Y and Z yet)
The part is programmed in Fusion 360, where I cant seem to find anything wrong either, no tolerances to adjust further- what I can see.
And ideas? Because I´m all out at this stage.
PS:
The machine is a complete DIY, so no make/model I can mention.
I have attached the Fusion file, reports from the Acorn and a picture och the 0,3mm that I don´t want
