The return of the Sinar board replica

A project log for How to use an aerial 36 inches lens

the different steps involved to shoot with an aerial photographic (enormous) lens when you don't have the airplane to hold it

[zit] Olivier Gade[zit] Olivier Gade 05/17/2022 at 15:520 Comments

Another Sinar board is necessary for the rear end of the assembly, to be able to mont a digital camera, to calibrate the shutter speed without wasting too much film, and to use the monster with a small sensor, like my Olympus Micro 4/3 gives a 1620 mm focal length frame, it should be spectacular.

Cutting with the lathe tool and finishing the edge with the ébavureur (demurring toot), makes nice copeaux (chips).

Getting used to milling with the 2 mm tool.

Now I need 8 narrow strips, 4 for the first stage, and 4 for the top.

It takes more time but I've used the metal hand saw to have a strait edge.

After welding/gluing.

Milling the top groove.

Enlarging the inner groove, carefully.

After sanding here and there, and again and again, it fits alright and tight on the Sinar.

The back of the thing, after velcroing both the board replica and the camera mounting plate, ready to go !