thanks for all your comments -- to answer your question, dennis, this particular 'hole' was made by some company that i don't remember the name of (i took it off of a cardboard 'tube' type pinhole camera that kurt norlin gave me at his workshop in newport last summer ...... i sandwiched it between two metal washers and inset them into a wider hole drilled into the cigar box lid) .... it's a lot sharper than the one i made myself earlier (which i made by pricking a tiny hole in a piece of aluminum cut off one of those disposable turkey roasting pans -- by way of comparison, you can see the pinholes i put up in the standard gallery a couple of months ago -- those were made with the homemade 'hole')