New Angulon Copal 3 on a Technica Board

**ic-racer** · 22-May-2010, 21:05

I just got a 210mm Angulon and mounted it on a Technica style board on my Shen Hao 8x10.
This is how I did it quickly so I can start using it tomorrow.

**ic-racer** · 22-May-2010, 21:07

I used a compass to draw the proposed hole opening. Since I got a Flange with the lens, it's going to have to fit in the middle of the raised lip. I'll be using the flange as a locking ring in this case.

**ic-racer** · 22-May-2010, 21:08

A 1/4 inch drill goes through the aluminum of the lensboard easily.

**ic-racer** · 22-May-2010, 21:10

The inner edge of the circle is smoothed out with a metal cutting bit on a Dremel. The final shape is done with the sandpaper drum.

**ic-racer** · 22-May-2010, 21:11

Final finish obtained with sandpaper.

**ic-racer** · 22-May-2010, 21:13

Here it is mounted on the camera.

Just judging by the light circle, even with full rise, the corners are not vignetted. So, this should be a perfect lens for this camera; i.e. just big enough.

**vinny** · 22-May-2010, 21:40

a shotgun at close range works too but a little less precise.
I usually use a coping saw with a metal cutting blade in these situations.

**ic-racer** · 22-May-2010, 21:58

I did it that way because it goes pretty quickly for me and I don't need to hold it in a vice. I'll have to try it with the coping saw next time...though I don't have one. Anything special to look for in a good coping saw? Round blade needed?

Hmm...need another #3 lens...

**Keith Pitman** · 23-May-2010, 20:41

Or . . .

You could buy a few Copal 3/Linhof type boards and keep them on hand!

Another option . . .

I have a friend with machine shop equipment. He has enlarged lensboard openings for odd sizes--Ektars, Acme, etc. You need to find a new "friend."

**ic-racer** · 25-May-2010, 07:48

Originally Posted by Keith Pitman

Or . . .

You could buy a few Copal 3/Linhof type boards and keep them on hand!

Another option . . .

I have a friend with machine shop equipment. He has enlarged lensboard openings for odd sizes--Ektars, Acme, etc. You need to find a new "friend."

Pre-drilled Technica-style boards are 65mm which is too big. The 210mm Angulons came in earlier Copal 3 shutters that are 60mm, 61mm or 62mm. They also came in Compound shutters that are not 65mm either. Thats why I prefer the smaller boards; always easier to go bigger than smaller.

No need to drive to a machine shop, thats why I posted this, by the time you are in you car and half way to a machine shop, I have my lens mounted and I'm out shooting

Plus, its unlikely a typical machine shop operator is going to know if its better to mount the flange or use the flange as a locking ring in this case. Also, one needs to take into consideration the shutter mechanism and the lensboard locking mechanism. My Fujinon 300mm uses a 65mm hole and needed to have the typical Technica 'low hole' to clear. The pre-drilled #3 boards Shan-Hao makes are drilled in the center. In this case the lens needed to be mounted right in the center of the board but it's not a 65mm hole.

Also, some older Copal 3s have a mounting ring that serves as a 'step-up' ring to fit a 65mm hole. In that case you have to have the ring in hand and ignore the standard shutter-hole-size charts when you start cutting.

So, all-in-all its best to do it yourself if you want it done right.