The best way to chop up your bubble for drying is to use a metal sift/screen and press the bubble through the screen and it should be nice and fine for drying. Ya Bman's got a good thread on pressing, but leaving it loose is much better as you don't break the heads open like when you press it.
"For what is a man profited, if he shall gain the whole world, and lose his own soul." Matthew
Did you hear about the rose that grew
from a crack in the concrete?
Proving nature's law is wrong it
learned to walk with out having feet.
Funny it seems, but by keeping it's dreams,
it learned to breathe fresh air.
Long live the rose that grew from concrete
when no one else ever cared. - Tupac Shakur