A friend of mine asked me to resurrect his old flashlight from 1913 and make a 445 laser.
here is what I did:
I use a 9mm 445 diode, thanks DTR.
a Xboost driver kindly range at 1.5A for a long life of the diode, thanks Clif and Lazereer.
a heatsink and focus, thanks Flaminpyro...