Got it (different approach, but it worked)
I just built one of these with a 1.66 A (at least that's what it's wired for) 1085 diy driver. Awesome build. Love it
EDIT: Holy smokes Moh, I got this host to do over 1.5W
I love this guy! Here's the driver approach I took:
Thermal pad, with IC thermal epoxied in place:
4x Parallel SMD 3 ohm resistors (easiest way to get 3W + in a small package)
And a ton of epoxy at the end, to keep everything in place.
Because of space issues, the protective cap needs to be moved to the diode itself. This is a solder job that requires very quick soldering, and very quick cooling (I like to toss a wet piece of fabric on the diode leads the second I've soldered each side of the cap, so that the bulk volume of solder doesn't retain heat any longer than necessary)
The final product - GETS HOT FAST!
LPMs at over 1,500 mW raw optical output.