The brownie you have is great for converting to pinhole cause it has a tripod socket and a B or (T-depends on the exact model) ) setting for the shutter. Setting the lever at the B or T allows you to hold the shutter open manually. So you wouldnt want to remove the shutter mechanism just the lens. You might have to just crack it out with a small hammer since there doesnt seem to be any way of prying the lens housing out of the metal box without taking off the levers for the shutter control.
Gina http://home.ix.netcom.com/~ginabell/index.html
