It's been a while but I finally got some time on the Stug. Also got motivated yesterday by the post, containing a recoil unit. That's going to need a bit of thought, as I don't have all the convenient turret mounts for it, not having a turret....

I decided to do some of the small details so this is my way of making working swivel mounted screws, in this case attaching the rear mounted track clamp. This idea could also be used on the jack clamps.

Started with strip brass (.015"x 1/4", or 0.45x 6.4mm) and two sizes of copper tube - .095" (2.4mm) o/d and .062" (1.6mm) o/d. The smaller tube is a snug fit inside the other.

The large tube was silver soldered to a length of the strip, and an 8mm (not important) length of the smaller tube drilled in the centre to accept an 00-90 x 1/4" screw, with the head removed. After soldering it's important to drill out the centre of the tube again

The tube and strip was marked off at 3 x 1.5mm intervals and the centre piece cut out and filed The smaller tube and screw was cut nearly flush to the thread.

I use a jewellers saw and "bench pin" (a scrap piece of wood or mdf that has a v-slot) to cut - the slot provides support for a variety of small stuff. It's also sacrificial so you can cut into it, make shaped cutouts to support stuff etc., and when it gets too bad, make another one....