Nice! Beam shots?3.5 watt diode in large 2×18650 batteries with heatsink for driver.
Here are the beam
shots, it's so bright the camera has issues with it, that and everything I put it on burns.
I just finished a build with a NUBM44 diode in a similar Eghemus host with a 4.5amp driver. I will post pics and beam shots tomorrow. I like the NDB7A75 diode, but I do think in almost every way not just power, but also beam quality the NUBM44 is superior.