Arduino Lightsaber

Andong:
Hello guys. Hoping for an advice from expierenced lightsaber builders on a PC tube for a blade. There are basically 2 types I can buy, regular one with flat surface inside(thats what i've been using so far) and there is another type with corrugated surface inside...claimed to better diffuse light. Keen to try it but wondering if anyone already used second type and knows for sure if it's better or worse in terms of a lightsaber blade.

Most people just use the smooth surface and put in something to diffuse the light (like clear gift wrap). This corrugated interior surface sounds interesting, though. It could actually be a cool effect, but I think you'd be exploring new territory there.