DIY top hat lensboard extension

[bolderj]

Hey all,
I was in search of a lensboard extension and came across
https://rafcamera.com/ They make many adapters and tubes etc.
I had a spare Copal #3 lensboard and the hole is standard 65mm,
Knowing this gave me the idea to build my own top hat extension using parts from RafCamera
Here is what I ordered from them.

60mm extender for M65x1 thread
https://rafcamera.com/extender-m65x1-60mm
M65x1 female to M65x1 male thread adapter (30mm long extender)
https://rafcamera.com/adapter-m65x1f-to-m65x1m-30mm
41.6mm to M65x1 thread adapter for shutters, wide
https://rafcamera.com/adapter-41-6mm-to-m65x1-85mm
Lens board (lens flange) for M65x1 focusing helicoid, round
https://rafcamera.com/plate-m65x1-round-d82


Cost me $134, and a couple weeks shipping.
All the components fit together well. And are well made.
I have used this for my Fuji 400T on a Toyo 45AX to get that extra bellows depth.

Here are some pictures.

[Graham Patterson]

90mm of extension must make front tilt/swing very sensitive? It looks like a robust solution and a lot more elegant than things I put together from ABS plumbing parts!

[Jim Noel]

When I needed to do this with a 4x5 Anba, I just used a soup can with correct size hole in the bottom and spot soldered, then black taped to lensboard. Worked well and I use it for years.