Where can I find the hole dimensions for drilling a Copal 0 and a Copal 1 board?

Also, I notice that Linhof blank boards have a pilot hole drilled which is NOT in the center of the board -- why is this?

-- Henry T. Stanley (HTStanley@prodigy.net), August 30, 1998

Answers

I was planning on having a machine shop drill my boards -- thus the request for dimensions on a Linhof board. Is this a good idea, or should I send to Calument, Grimes, etc., for drilling? --Henry

-- Henry Stanley (HTStanley@prodigy.net), August 30, 1998.

The web site at schneideroptics has the specs you need. I have taken boards to a machine shop, and let them measure the size needed.. although it was not a common size. I'm sure you can call 1-800-CALUMET and they will provide answers. IMYO unless you already have the boards why not buy them predrilled? All major makers sell boards for the shutters you named(even minor I have a Cahnam and was aable to get one "off the rack".)

-- Roy Feldman (royfel@hotmail.com), August 30, 1998.

http://www.schneideroptics.com/large/shutter/shutter.html

-- Jon Grepstad (gjon@online.no), August 30, 1998.

Thanks. The Linhof boards I have are undrilled, and the the pilot hole is quite low (not in the center.) The DRILLED Linhof board I have is slightly low of center. As a result, I'm not sure where to have the holes drilled. FYI, these boards are to be used on a Toyo 45D with flat and recessed adapter boards designed to take Linhof boards. Can anyone shed any light on this? Thanks -- Henry

-- Henry Stanley (HTStanley@prodigy.net), August 31, 1998.

I would think that you would want to have the optical axis of your lens centered in both directions on your film plane, with all movements in the neutral position.

-- Ron Shaw (shaw9@llnl.gov), August 31, 1998.

I assume you have the lenses. Measure the flange with machinist calipers! The size of the hole is not as critical as people would have you think. It only needs to be light-proof and keep the lens from sliding around in the board (I've made several homemade lensboards from masonite etc which work more than fine!). Pilot holes drilled off-center are to center the lens on the film on cameras on which the lens standard is not cetered (usually higher) the lens shoud be as close to center as possible.

-- Doremus Scudder (ScudderLandreth@compuserve.com), September 02, 1998.

The URL Jon mentioned is incorrect. The correct one is: http://www.schneideroptics.com/large/shutter/shutter.htm

-- masayoshi hayashi (mhayashi@phys.ufl.edu), December 28, 1998.