Hah! So that's you! I actually bookmarked your site from a search for DIY 4x5 Pinhole. I do not have any film holders, so that's going to have to be purchased. I was considering making film holders myself, but I'd like to be able to use the same holders with another camera later so I think I'm going to just buy some holders and build the camera around that. For the tripod mount on the PepsiCam I actually took a hacksaw to a 120 film spool (since they're reproducing in the corner at an alarming rate) and cut the end off. I tapped the hole in the bottom of the cut off spool end, and then shoved it through another piece of foam core. More duct tape, and there you have it!
Originally Posted by DWThomas