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Pip
·Following on from @JimInOz thread on Seiko Barrel Arbor Jewels it was time to take my Seiko servicing up a notch and jewel the barrel arbors.
Still can't get my lathe working at the moment so I decided to go down the jewelling tool route with my Favorite set.
I had bought a few sets of bridge and baseplate jewels from a good Seiko source, and had purchased a suitable reamer from Cousins a while back, and my stump arrived from VTA a couple of days ago. As it was my first effort, thought I'd best break out a scrap movement to play with rather than risking a good one.
First part was simple - push out the bush from the bridge. A bit of a wipe and then push the jewel in its place. It's easy this watchmaking malarkey isn't it?
The onto the next stage - use the new stump to mount the baseplate and the reamer to open out the hole to 1.599, then use a countersink to take off the burrs from both sides and give a slight chamfer to the new hole.
So far so good. I think? After this a broach to open the hole a little more. The select a stake and use it to push the new jewel in.
Hmm. Not sure what happened. I suspect that the hole was not opened up enough? Or I used a poor selection of stake (the jewel stuck to the stake rather than going into the hole. In any case, it was not pleasant. I'll have to have a rethink and revisit it.
Any hints or tips on what I cocked up gratefully received! I'll have another play when I get a chance, but won't be until either the weekend or next week now.
Phil
Still can't get my lathe working at the moment so I decided to go down the jewelling tool route with my Favorite set.
I had bought a few sets of bridge and baseplate jewels from a good Seiko source, and had purchased a suitable reamer from Cousins a while back, and my stump arrived from VTA a couple of days ago. As it was my first effort, thought I'd best break out a scrap movement to play with rather than risking a good one.
First part was simple - push out the bush from the bridge. A bit of a wipe and then push the jewel in its place. It's easy this watchmaking malarkey isn't it?
The onto the next stage - use the new stump to mount the baseplate and the reamer to open out the hole to 1.599, then use a countersink to take off the burrs from both sides and give a slight chamfer to the new hole.
So far so good. I think? After this a broach to open the hole a little more. The select a stake and use it to push the new jewel in.
Hmm. Not sure what happened. I suspect that the hole was not opened up enough? Or I used a poor selection of stake (the jewel stuck to the stake rather than going into the hole. In any case, it was not pleasant. I'll have to have a rethink and revisit it.
Any hints or tips on what I cocked up gratefully received! I'll have another play when I get a chance, but won't be until either the weekend or next week now.
Phil
