S'h best tute on casings I've seen around.

Yeah, for budget-pyro. Which all of us here are anyway

what about if i used glass casing?

IE: an addidas bottle completely full of black and white gun powder stuff. not much a pyro technician. will i die? will it go boom? im high...

i dont care if it will hurt me, will it work?

ROFL!!!
Might just Be a sparkler show.
:]

do it tell us what happens
and be sure to hide behind a tree
those fuckers are good shields

big ass explosion. it blew into two pieces and fucking destroyed my moms garden. i still have both halves of it.

how does one extract the ascorbic acid used in the crimson powder

Vitamin C tablets.

i know Vitamin C is ascorbic acid but do i need to do further extraction from that?

What would happen if you just put a round peice of paper in the hole and hot-glued it?

round piece of paper? as in a scrunced up ball? i'm not sure what your talking about, but my guess is if your asking what i think you are it won't hold. it will burn up or be forced out, leading to your explosive filler being shot out the opening(s)