Hi all,
My laser table is relatively flimsy by comparison to all the other ones out there and I don't seem to have any problems with alignment. I cut at anywhere between 3 inches/sec down to 0.1 inches/sec and my rapids are 14 inches/sec.
No problems yet.
Like Mexico_Redsail said, I'm not doing Holograms so there isn't much need for micron alignment. Mine will stay in about 0.002" which is heaps close enough for me with a beam variation of 0.007 to 0.014 depending on the warping of the material I am cutting.
There are too many variables and not enough magnets to keep my sheet material really flat.
One thing I have noticed with my 35watt machine is that if I suspend my thick (2mm) material above the table allowing the beam to pass right through I get a lot of charring due to air getting to the rear side because of the slow cutting, so I place my material on a flat steel surface and try to hold it flat with magnets and there is no charring on the rear side.
Richard.
I am not completely useless.......I can always serve as a BAD example.