Busch Pressman 4x5 lensboards....metal or 3D printed?

[harlequin]

Hello Team,

Finally got my Busch Pressman operational after tear down.
Was wondering what people are doing for lensboards?
I have an aluminum one rough (like a drunken sailor let loose with circular file)
Not even sure the hole for lens is 100% in center of lensboard.
Is there a reliable source for these as I need 1 Copal 0 and 1 Copal One Size.
I suppose these could be 3D printed?
Will 75mm wideangle lens (Fuji) work or does it need a recessed board?

Thanks for your time and assistance on this!
Harlequin

,,

 

[Horatio]

I could not get my Fuji 90mm to fit in my Pressman with the standard lens board. Interested to know whether a recessed board will work, if available. Let me know how it works out.

 

[Luckless]

I've 3d printed a few test boards for smaller lenses, like a Kodak Ektar 127mm, and a Dogmar 135mm. They have worked well so far, but getting the base model took some trial and error. [I'm trying to sort out sharing and versioning for files in Autodesk Fusion 360 if you're interested]

I still haven't finished sorting out a solution for a 'top-hat' lens cup for a slightly larger lens I have, but the Busch Pressman isn't super flexible on lenses past the "Small old-school" lenses. I would need to go track down the measurements of that 75mm lens to make a judgement call. That's not a lot of space to work with.

An important point to keep in mind if you're looking at 3d printing: Not all filament is as opaque as companies can make it out to be, and the quality can vary from spool to spool. [Or even within the spool in some cases] So take extra care with testing for light leaks even through the plastic itself. Extruder based 3D printing can make for a very porous material, so trial and error and robust testing is called for.

I used a digital camera synced to a high powered flash and photographed it from the inside and outside in a dark room to test for pinholes, but I still need to do a long-duration test with film to be sure.

 

[Dennis-B]

There's a guy in Kansas who makes them, including welding the flange. You can get them in blank or drilled for various shutters. He's GARY9000 in eBay. Doesn't show anything for sale now, but he made mine and shipped very quickly.

Mine fit perfectly.