Dougie, thanks for dropping by
the brass tube diameter is 0.8 mm (internal lumen of 0.6mm) and i have filed the top and bottom of the tubing section to simulate the flat top and to accomodate the recoil tray that will be glued to the bottom side of it. Also, the sides have been sanded to some extent, to help reducing the overall diameter of the tubing section. The reduction of the external diameter brought the 0.8 tube section to be some 0.6-ish mm wide, thus closer to the real dimensions of that section of the gun tube translated into the 400th scale, which M.Skwiot profiles state to be some 0.56 mm (thus -0.6 ish). The choice of a 0.8 tubing section was necessary because I have planned the gun tube to be a composition of telescopic tubing of 0.8, 0.6 and 0.4 mm (am using Albion Alloys brass tubing and must say the quality is excellent), 0.4 mm perfectly matches the actual dimensions of the barrel (0.43 mm translated into the 400th scale according to Skwiot's profiles).
That mix of CA, paint and filler on your fingers means that your shipyard is rather busy at the moment!
so good, looking forward to see some in-progress pics soon!Here at the SG Werke the work on the deflection setting block has already begun, it promises to look pretty convincing (progress pics asap).Cheers,SG