Lensboard opening to small

FM2N

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Jun 23, 2006
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Hello All,
I have a Wollensak lens in a Alphax shutter and the hole in my Linhof lensboard is just a little to small for the lens to fit through. Any ideas on what to use to ground the hole larger? I have a dremel but am unsure as to which type of attachment works best. Any ideas would be great.
thanks
Arthur
 

BrianShaw

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Assuming the board is aluminum, you can use a carbide burr on the Dremel. The shape I've used in the past is long and pointed, so it has a flat cutting part and a taperd part. They cut fast, however, and can leave a pretty ugly hole. I've also used a sanding drum on the Dremel and find that better since it cuts slower. Last time I needed to enlarge a hole on a Cambo board I went "old school" and used a file. Took more time but since it cut slower I got a much noicer hole.
 

nemo999

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Jul 20, 2008
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Agree with previous poster. Use a half-round file and rotate the board constantly as you file - should only take a minute or two to enlarge a hole 1 mm.
 

bdial

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Sandpaper on a large dowel or other round form works too, maybe slightly slower than a file. Leave the dremel in it's box.
 

Frank Hoerauf

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Jan 14, 2006
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before you start filing or sanding take the lens and center it on the board and draw a circle with a pencil on the board, then when you start filing you have a guide to go by. use a file and just take your time. when that part is complete then screw the retaining ring tight to the lens , position the lens on the board the way you want it and mark the holes with a pencil then drilll them out, get some small screws and nuts at the local hardware, (they usually have the really small stuff) also get a lock washer while your at it and there you have it a functioning usable lens set up .hope this helps as i have done exactly what your doing and this system worked well for me...........frank
 
OP
OP

FM2N

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Jun 23, 2006
Messages
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Location
Long Island, NY
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Thanks for all the great info. I will keep the dremel in the closet and use the 1/2 round rasp that I have.
Arthur
 
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