r.e.
21-Feb-2009, 11:52
I need a board for a Copal #3 lens that is arriving in the next few days. I'm thinking of widening the hole on a Copal #1 board that I have kicking around, seeing as how my WTB for a #3 has not resulted in an avalanche of replies.
The back of an Arca-Swiss board has a circle in the centre that is about the diameter (65mm) of a Copal #3. This circle is recessed into the back of the board by a few millimeters. Copal #0 and #1 holes are made from the centre of this circle. It would seem that when the entire circle is cut away, you have the hole for a Copal #3. If that is correct, the thickness of the board when a Copal #3 is mounted is a few millimeters more than when a #0 or #1 is mounted. Perhaps this is deliberate to give just a bit more stiffness for a #3?
So I am thinking of widening the hole of my #1 to cover the entire recessed circle, using either the services of a local machine shop or, if I can get the use of a vice, a half round mill file.
Before I do this, I want to make sure that I'm not about to ruin a perfectly good board. Is there any reason to believe that I'm on the wrong track?
The back of an Arca-Swiss board has a circle in the centre that is about the diameter (65mm) of a Copal #3. This circle is recessed into the back of the board by a few millimeters. Copal #0 and #1 holes are made from the centre of this circle. It would seem that when the entire circle is cut away, you have the hole for a Copal #3. If that is correct, the thickness of the board when a Copal #3 is mounted is a few millimeters more than when a #0 or #1 is mounted. Perhaps this is deliberate to give just a bit more stiffness for a #3?
So I am thinking of widening the hole of my #1 to cover the entire recessed circle, using either the services of a local machine shop or, if I can get the use of a vice, a half round mill file.
Before I do this, I want to make sure that I'm not about to ruin a perfectly good board. Is there any reason to believe that I'm on the wrong track?