5x8 Camera Build

**Jim Jones** · 10-Mar-2024, 08:02

Originally Posted by Michael Roberts

Thanks, MK!

I finally got started on the 4x5RB GG frame today. I chopped and glued the first two layers together. Getting the outside dimensions was easy; the width is the same as the 4x5 film holder, and I set the length at 6 1/8". Then I had to design the inside opening and all the other measures based on my GG dimensions. In this case, the acrylic GG is a little small-- just under 4" and exactly 5", so I went with 3 3/4" and 4 7/8" for the opening. That left me with 1/2" widths for the top, bottom, and flap sides and 3/4 for the baffle side.

I rummaged through my scrap bag of 1/8 and 1/16th basswood for pieces to chop and glue. 1/8 plus 1/16 comes to .1875 depth. ANSI for 4x5 holders is .197 +/-.007. Subtracting the .005 film thickness is .185, so pretty close for landscape work.

Next, I need to add a top layer of 1/16 mahogany veneer, spring anchors, and GG clips....

Keep in mind that the so called "T" distance (between the face of the film holder and the film) is from the face of the holder to the septum behind the film.

**Michael Roberts** · 12-Mar-2024, 04:43

Thanks, Jim. That's my understanding as well. Sorry if I wasn't clear in my earlier post.

FWIW, I'm back in Utah again this week, doing more field testing on the camera...and dodging the 28" of snow predicted for tomorrow and Thursday at my house.