This was a first time ...
I have used this one
https://www.aliexpress.com/item/500mW-Desktop-DIY-Violet-LY-2017-Laser-Engraver-Picture-CNC-Printer-20-17CM/32571907589.html?spm=2114.search0302.4.9.Uxpiv1
I took about 50 minutes to engrave one blade ....
all looks fine... no skipping or any...