When I’m using the rotary, my image resizes. How do I get it to engrave the exact size I have set. it also changing round into ovel.
Did you click on ENABLE ROTARY?
Did you set up your rotary I der the laser tools window?
Did you confirm your settings with a physical test?
There are many many videos on YouTube that detail how to set up and tune the rotary settings.
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Yes, “Enable Rotary” is on.
Yes, the rotary is set up under Laser Tools → Rotary Setup.
Chuck rotary is selected.
Object diameter is correct, circumference is correct.
Test rotation works.
The issue is this:
- In the workspace the artwork is exact size, for example 1.75" × 2.50".
- After engraving on the rotary, the result is shrunk: around 7/8 tall and 2" wide.
- Circles turn into ovals.
- This happens even though the artwork is not being resized in LightBurn.
So LightBurn seems to be scaling the output during the rotary wrap, even though the diameter and circumference are correct.
What setting controls THIS scaling?
Make sure that your “mm per rotation” are correct. I had to use trial and error until I found the correct setting as user manual for rotary device was wrong ( Acmer ). That will affect the Y axis. Why your X axis is also going out ….. I’m not sure. Have you checked your $100 and $101 in “machine settings” ? If you engrave 1.75” x 2.50” on a flat surface and they come out 100% then these should be the same on a round surface on rotary device. Have you set anything in “Taper Warp” ?