So, I’m trying to cut this file, one i have cut many times before, and it’s not working.
In the photo you see the back of the piece.
The outline cut first, and fine.
The slots cut second and, obviously, not so fine. Each of the three panels should be basically identical.
The origin is in the bottom-right of the piece, beam from the bottom-left (piece is upside down) and the slots are narrow rectangles that are cut from left to right.
3mm poplar ply, usual supplier
40W Blacknose laser
Settings 10 speed, 90% power (usual settings for ply are 15 & 70%).
Optics are clean.
Optics are correctly aligned.
Focus is correct.
Laser is in a sunny conservatory, but the problem was still there at 0630 today, when it was cool and shady.
Any ideas, folks? I have paying work to do…