Well, I did it!

The photo shows the completed pieces for the tower. It's built of 1/12 dowel and toothpicks. It turns out that the toothpicks are very close to 1/12 themselves. I might consider redoing this with smaller diagonals if I ever find smaller diameter dowels.

Both rings were gone so I made the smaller one using SWMBO's punch set. The larger one is a peeled 24mm engine block that I stripped both the inner and outer paper from and then sliced it in half with a razor saw.

Having built both, I'd put the 38 piece Soyuz interstage as slightly more difficult to build than the 29 piece MR escape tower structure only because the Soyuz is structural and there is a fair amount of weight above the structure; on the MR it's only a small balsa dowel for the escape motor.

I'll post more soon.

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NAR 79743
NARTrek Silver
I miss being SAM 062

Awaiting First Launch: Too numerous to count
Finishing: Zooch Saturn V; Alway/Nau BioArcas; Estes Expedition; TLP Standard
Repair/Rescue: Cherokee-D (2); Centuri Nike-Smoke; MX-774
On the Bench: 2650;
Dream Stage: 1/39.37 R-7