I had reported a problem with my 200mW 473 unit to David and he replied to send it back. I shipped it out and was told it would be 2 days for the repair after it arrived at Lasever. I am very happy with the results as it was returned to me in excellent working order in a little over 2 weeks. It is the ML type and has the new crystal set. It does over spec as far as power output....around 237mw @ 4.92 vdc. I am happy with the service and products they have...even if they have a few flaws now and then. Lets look at the price of Coherent and Arctose lasers before kicking around too much. It seems there problem was not directly faulted to them, rather the coating manu.....bad day at the sputtering machine?
It's lore of an old machinist's saying.....
If you want nice , pricise machine work you must pay a fair price......
If you can settle with loose tolerences.....well that is a little cheaper....
and a hacksaw and file are always cheapest.
Botom line is I am not going to try and make a 473 unit at home. I would like one to tinker with .......20mw or so.....
You are the only one that can make your dreams come true....and the only one that can stop them...A.M. Dietrich