I'm relatively new to the saber making (smithing?) scene, as in first lightsaber, and I'm milling/ lathing a custom blade holder out of new aluminum. I've already ordered the parts for the saber, but seem to overlooked the technicalities of the heat sink. From all of the information I can find, the heat sink is made of 5 important parts, the led, lense, lense holder, copper disk and aluminum... Sleeve thing... My question is; is the aluminum part required to hold the whole assembly together? In which case I may need to Modify my blade holder plans.