Problem
Alignment is good near the origin but off at the far corner.
Solution
Perform long-bed alignment carefully. Align mirror 1 to 2 at near/far Y, then mirror 2 to 3 at near/far X. Large beds magnify small angular errors.
130W CO2 35x55 Autofocus troubleshooting from the Monport laser FAQ.
Alignment is good near the origin but off at the far corner.
Perform long-bed alignment carefully. Align mirror 1 to 2 at near/far Y, then mirror 2 to 3 at near/far X. Large beds magnify small angular errors.