I get what the fins are doing,but only if they are added outside the tube,leaving the walls thick(like a thorfire vg15s for example). My disbelief is how efficient it would be removing material in order to have fins leaving the walls thinner.
I guess I’ll have to order the full flashlight and repurpose the shell when I get bored.I also ordered the same driver for another project but mine didn’t have the “new firmare” description,so it’ll come with the standard firmware.I’ll try to find if flashing it would be possible.
Thanks again!