Hello Gents,
I have purchased a Chinese 40W laser engraver/cutter. I am building a prototype, and i needed something that would help to cut some of the parts precisely. So my expectation is not so high, but at least i need to be able to cut acrylic 2.3mm sheet.
So my problem is, machine cuts thru in the beginning coordinates up to (X,Y=50,50), then does not cut thru at the rest of the cutting areas. Please see attached pictures.
Also, secondary problem is, seems like laser beam splits into two beams, so shows second cut very tiny.

As you may understand from the buying from Chinese seller, no help from the seller. and i would appropriate for any help.

Please let me know what you think.