So today , a realize that when i last time try to make right angle on right rail and the , head , rail . the right belt was probably one toth on belt running .
After this alighment i try my mirror alighment …of course i make an mistake and do it only in middle of workplace so there ist was OKAY. i try to finis One order . one Family calentad with was 480x220 mm first the all engravings , nothing wrong on engraving and when ist starts CUT a noticed Double cuts on right side .
After checking the alighments the pulse on paper was barely on the corner .
So i start to alighnt all mirros from 1,2,3,4, every corner . the right way . after few hours of trying be on center i do it.
starting againv with calendar order aaand i try to make some test cuts before .
Test cuts are not good . The power and feed that i use for 6mm plywood were 15mms and 40% power from 80w tube . cutted milion times before withou any problem . and now barely 3 mm deep cut only .
so i gues somewhere is my laser beam power loses.
Bud why ? Where ? what should i check ? Mirrors are alight and clean , the focal lense is clean , the focal lenght is same as before
Lower the power or pulse duration. We want a lightly brown spot, not a black or burnt out spot.
When you do an alignment, you have to start with a good beam that is resonating in TEM0 mode or it’s not going to perform. So start at m1 (mirror1) and check center of mirror and the mark itself for a good beam.
On the head shot, are you sure the center of the hole is the center of the mirror?
Sorry, but I wouldn’t accept this alignment either if it was my machine. And, as @jkwilborn writes, this circle in M1 doesn’t look too good. Anyway, I will try to center the test shots straight from M1 to M3 and then check if the nozzle is at a perfect 90 degree angle in both directions.
I hope you succeed in getting an acceptable align result, then you have to look at the tube itself afterwards to see if it has an error and cannot present as it should.
I’m not that qualified to send the man out for a new tube and certainly not on the basis of one or two pictures that I don’t know under what conditions and with what settings they were made. That’s why I recommended trying at least to get a usable align result. What will go wrong?
It wasn’t the tube’s effect or focus that was the original problem, if I’ve read correctly. So if the machine was running satisfactorily before @Steam worked with the belt, then the chance that the laser will run again (at least as before) is high.
Thanks for very educative advices , after work I will try it from beginning with proper pulse photos from mirror 1.
I have no problems since I have this machine , there is an efr f2 tube and it should be maybe on 30% of his lifetime . And before my ,belt, alignment I have no problems with cutting or engraving , only thing was problem when I cut circles around 400mm plus the roundness was not good , that’s why I start looking for angles on rails and find out that 1 tooth on belt was bounced . Probably it was from the production because the mirrors were alignment to this state.
Here is how looks my calendar before any mirror alignment , this was only the right side of piece, the left was normal , great cuts as before .