Holographyforum.org / holowiki.org

Is there a specific direction in which the c315m module has to be mounted? Or can I tilt it in all directions? I want to mount it sideways at 90 degree. ( left side up)

I've used it fins down and fins sideways.

Check out the 315 section at http://www.repairfaq.org/sam/lasersam.htm.