I made something like this for a friend's 8x20 camera. I simply made a carriage with dove tailed sliders--lubricated liberally with Lemon Pledge. I used a 2' length of All-Thread (threaded rod) and a bronze nut sandwiched on the carriage. a handle cobbled together with bolts and pvc pipe is the crank. Works fine. Usually the carriage is where the camera sits, but in the case of an 8x20 camera the bed of which is 2-3' long. I made the carriage (where the drive nut sits) the tripod mount. This way the crank handle on the longer bed is always in the same spot relative to the ground glass.
Depending on the format you won't need much length. For an SLR 35mm you can probably simply make the slider rail and skip the screw drive. The person with the old Omega enlarger will have the better device because it was engineered to do exactly what you need. Baring taking apart your enlarger, a wooden device should work fine. I've got another design that I will make when I get the time. If I think of the improvements I'll post them. ---William Nettles [EMAIL PROTECTED] Nettles Photo / Imaging Site http://www.wgn.net/~nettles > From: [EMAIL PROTECTED] > Reply-To: [EMAIL PROTECTED] > Date: Thu, 6 Dec 2001 12:07:02 -0700 > To: [EMAIL PROTECTED] > Subject: Cameramakers digest, Vol 1 #276 - 7 msgs > > has anyone made a focus rail for macro-photography? > I'm going to make one, for my SLR, and I have several > designs in mind. I was thinking of copying the > Novoflex design, but then I thought I could probably > make it simpler. Anyone already do this? Photos? > Thanks, > Matt _______________________________________________ Cameramakers mailing list [EMAIL PROTECTED] http://rmp.opusis.com/mailman/listinfo/cameramakers
