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Showing results for tags 'impulse jewel'.
I have an old Waltham pocket watch movement which is missing the impulse pin (roller jewel). I have a limited number of actual jewels and since this is just a practice movement I thought I'd try to make one out of brass. I've seen this several times in old pieces--usually a very sloppy job. So I got some brass stock of the same diameter as the "D" in the roller table, filed it and burnished it to a high gloss. Then I took a small, very fine diamond file and filed it half flat to form the "D" I then polished the face using progressively finer sandpaper on a steel block. This works fine--s
An encouragement to newbies, and perhaps a useful trick for veteran watchmakers Last week I replaced an impulse jewel in a roller table for the first time. Hurray!! I feel I'm growing as a watchmaker, although still largely through making mistakes and then saying, "Well, I'm not going to try THAT technique again!" So I want to encourage my fellow newbies that one really can learn how to do these challenging maneuvers. I puzzled for a long time over the techniques by which I would pick up a slick tiny impulse jewel measuring 0.38 mm in diameter, and place it, facing the right direction, pr
Just uploaded a new video. This one is one of my favourites, an Omega Military watch from the mid to late 40s. It had a broken balance staff, impulse jewel and the pivot on the centre wheel had a groove worn into it. I didn't film the lathe work but managed to get quite a bit under the camera. I hope it's useful to someone. Some pics: