Radial brushing technique

[steve1811uk]

Hi, Just wanted to share my experience of radial brushing on a Seiko 7005-8160P. I built a little jig using a block of wood, plastic case press, and Wood screw. I think the pictures are quite explanatory. The red tape was used just take up the slack. Using a junior Jigsaw blade with some 600 grit paper wrapped around it and short 5mm strokes back and forward as the case is rotated slowly. Using the long slot I made in the screw head as a guide. The height of the screw is adjusted so that the Jigsaw blade is flat against the case and not at an angle. It's working pretty well. Will post a picture of the finished case.

[Tudor]

That looks great! Nice job!

[steve1811uk]

Finished case. Still has a few minor marks but. I think if I went further then I would start losing the case lines and sweeps. In any case this watch is 50 years old so I don't want it absolutely pristine.

[steve1811uk]

Completed the watch today. Seiko Sportsmatic 411, 7005-8016P, lemon dial, eBay find, originally bought in 1971 in Singapore with original guarantee card, no web sales back then. Fully serviced and running very well. Very happy.

[KOwatch]

Can you speculate or suggest technique to get radial brushing on casebacks or dials, where the radial center is visible and comes together as a point?