Cut shape shorter than gcode causes (missing 1/2 inch )

This triangle is 36.25 inches tall in krabz… exported using profile outside…

After cutting my triangle is only 35.75 inches tall.

Thanks for any ideas on where my missing .5 inches is.

3mmdeeprealhalftriangleleftside3.nc (400 Bytes)

Maslow-serial (10).log (7.6 KB)

maslow-dec17-on-top-2inch-foam-slightly-smaller-frame-elevated-anchors-bit-in.yaml (6.8 KB)

I’ll try to cut it near the center of the workspace to see if that changes the size

Just tried in the center… same size. hmm

You can try modifying these From FluidNC dropdown then config items


How I suggest you work out the value to put here.
Put a mark on your work corresponding to the bottom of the Maslow.
Move known distance (1 metre), put another mark corresponding to the original mark. Use tape measure to measure distance between marks. Divide measured value by 1 metre and paste into Maslow Scale Y.
Do a similar procedure to find value for Maslow Scale X.
After saving values, repeat measurements procedure to confirm. You may find different areas also vary. Mine seem pretty consistent across the work area.

Thanks; so these values will correct for the distortion?

I just cut a 20 inch square in the center and it came out as:
19 3/16 on the y axis
20 3/32 on x axis

I’m updating my values to.

/Maslow_Scale_X = 20 / 20.09375 = 0.99533437 (≈ 0.9953)

/Maslow_Scale_Y = 20 / 19.1875 = 1.04234528 (≈ 1.0423)

Saving…. Restarting Fluid NC … Apply tension… ready to cut nice…

Now trying another 20 inch square…

You don’t need to restart FluidNC when you change these values, just make sure you set them and save (top) then go back to Maslow main menu. I use the pencil marks so I’m not wasting material to get it set up. Let me know how it goes.

Thanks, I did a couple more iterations ( gpt assisted ) … and these values ended up getting my 20 inch box perfect 20 in both directions. Now will try my triangle again.

Thanks for the tip on not needing to restart FluidNC.

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