Hell of a time aligning the emitter to reflector on c8+

hi all, so on the c8, I’m using a noctigon mcpcb on xpl hi, I cannot get the emitter to center and its causing the reflector to aim differently and giving me a really bad hotspot, what’s the trick?

Did you screw down the mcpcb ? if so loosen the screws and center it.

It’s not enough. Can I sa sand or trim the emitter?

I use one of these to insulate and center the led.
https://www.fasttech.com/product/1182004-insulation-gaskets-for-cree-xm-l-t6-led-emitters

You can trim,sand the mcpbcb some

I’ve notice with those mass produced reflectors, they have slightly uneven base. Right when you tighten down the bezel it shifts the reflector to one side. Most of my c8’s have an oblong hot spot up close on a wall. You can slightly sand the base of the reflector on the same side as the oblong area points toward to help some. Not much room for error. I ordered a few reflector to play with. They are inexpensive. May even get a few decent ones if your lucky. Try different centering rings. They are typically only a few cents a piece. Good luck.

Same. Spent the better part of last night trying to align my flat white with the gasket only for it to be thrown by the reflector when I installed. I put some small dabs of thermal paste on my gasket, eyed it best I could and let it set then slowly screwed the head assembly together… not the best but it works I just have to never take it apart ever again

With vinh modding for a living, I asked how he does it, he aligns the reflector around the emitter and glues the reflector to the body. I’ll have to take that as well as the feedback here and approach it that way.

I’m thinking of using high temp JB weld to weld the centering ring to the mcpcb so it doesnt move as the reflector is placed. Maybe adding jb weld between the lip of the reflector and the body…

Worse case scenario, I’ll have to sand down the mcpcb so it has more room for alignment.