jacot vs pivot polisher

[arutha]

Hi David,
it didnt come with burnishers but it did come with all the other bits and 2 pivot gauges. It looks hardly used. There does seem to be a lot of watchmakers equipment coming up on the UK ebay but the prices it is making is getting out of control. A division plate went a couple of weeks ago for £640!

[tmac1956]

@david pierce wrote:

Tmac,
The pivot polisher has a runner and pulley on one end and a flag on the other. The flag has a small hole that the pivot rides in and the pivot is reduced with a cutting action usually with a jasper stone. If the stone is not held perfectly level, the finished pivot will reflect the angle at which the stone was held. The Jacot tool also has a runner and pulley but on the tail end there is a grooved fixture that holds the pivot and a guide system that keeps the tool level. The pivot reduction takes place with more of a burnishing action which occures in the groove. The pivot polisher is a simpler tool but it is more difficult to end up with a true cylinder. The Jacot tool is more complex and it is difficult to find one with the proper runners at a low price. There are a lot of Jacot tools for sale at what looks like a bargin but they always seem to be missing the tooling to make it a working tool. A good pivot polisher can be had for about $59.00 but a Jacot tool that you can actually use will be around $400.00.
david

David:

To this Jacot tool appear to be cmplete?

http://www.ebay.com/itm/Watchmakers-Jacot-Lathe-Extras-/130841106880?_trksid=p2047675.l2557&ssPageName=STRK%3AMEWNX%3AIT&nma=true&si=4LTM%252FkPOAM%252FZV9tLcjKl0CJOpt4%253D&orig_cvip=true&rt=nc

Thanks!
tmac

[randy]

Tmac,
Yours appears to have all the items that were planned for in the box.

Sometimes you would also get some spare discs in a small capsule,but I don’t see that in yours.

It looks like you are on your way !

Best,

Randy

[tmac1956]

Another Jacot Question…

My Jacot lathe is one of the older ones and has a series of numbers stamped onto the end of the brooch where the pivots ride. Any idea how to read those or what they mean? The tool came with the “The Jacot Lathe” DVD by Ron DeCorte of AWCI, but he seems to be at a loss about these.

Thanks!
tmac1956

[arutha]

Your Jacot tool should have come with a pivot gauge, the numbers on the drum should correspond to the gauge. If you dont have a pivot gauge then dont worry about them too much, just as ong as your pivot fits neatly into a slot on the drum, slightly lose is always better than slightly tight

[tmac1956]

@Arutha wrote:

Your Jacot tool should have come with a pivot gauge, the numbers on the drum should correspond to the gauge. If you dont have a pivot gauge then dont worry about them too much, just as ong as your pivot fits neatly into a slot on the drum, slightly lose is always better than slightly tight

Yes – I have the gauge. That makes sense. Duuuhhh.

Thanks so much!
tmac1956

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