I have been working on a module kit for the DTR single mode diode bundle. The initial goals were to keep the price low, module small and the alignment stable. To meet these goals I decided the simpler the better. Keeping with that theme, I removed the standard x/y mirror mounts. I replaced them with rigid mounts instead. The x/y alignment is done from the diode. The plate that holds the diode can be moved up/down and left/right. This allows for enough movement to get perfect beam overlap. The benefits are less moving parts to go out of alignment and less parts to be machined. Because the diode plates are "flat on flat" it is very stable. The most likely place to loose alignment is the lens holder. This can be glued after the final alignment is done. The downside... it's a little harder to align. Not really hard once you get the hang of it though.
I will be listing these in the for sale section soon for those that are interested. I posted this here for discussion and to show how it can be done economically. Also, I am very happy with the way the clamping diode plate came out. I was a big fan of press in mounts but always wanted to be able to change diodes more easily. Even though its a PITA to machine, I will be using this design on all my builds coming up.
http://s161.photobucket.com/user/log...%20RGB%20MOUNT
Here are some more pics on photobuket