Just got back an Omnichrome 643 ar/kr laser after Evergreen rebuilt it.
The people at Evergreen were very professional and extremely helpful!
They did a great job on the rebuild and this little single phase aircooled whitelight laser is now speced at 230mw @ 8A. With 10A who knows? 300mw? (All I done so far is fire it up after unpacking. Lased w/o any optic tweaking.)
Goes great with my 543 Argon (>650+mw @ 10A). But back to the subject.
I have nothing but the highest praise for Evergreen Laser for their outstanding service and workmanship!