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    Balance Oscillation in main plate

    might I add a timegrapher can also be helpful here
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    Balance Oscillation in main plate

    that is not how you check to see if a balance is good, how long it takes to stop depends on how much energy is transferred to the wheel by the puff of air. It will have to exhaust all that energy in order to come to stop thus the stronger the puff of air the longer it takes to stop. This is...
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    Truing Caliper

    FYI to avoid putting stress on a riveted staff i make my adjustments away from the rivet. I do all the low spots first then flip the balance making the high spots into low spots and again adjusting opposite the rivet. Its a large pocket watch balance. the pivots on these staffs are short and...
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    Truing Caliper

    Cool! glad its works for you, and good to know other methods but personally I would stick to the good old fashioned way as illustrated in the "Bulova School of Watchmaking" handbook.
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    Truing Caliper

    then how do you mark the high low spots when transferring out of the caliper. are using your eye or physically marking the balance.
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    Hamilton Watch - can’t get it open

    if there is no groove or lip it is a screw type.....I deal alot with vintage WWI and WWII watches. I have come across dozens of NOS cases such as WWII star and keystone cases for A-11s and Fahys for WWI some with the original black japanning. These cases are all semi hermetic *(screw type) the...
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    Truing Caliper

    I have been using truing calipers for years never had an issue. You obviously need to know how to do it right, and how to use your finger to support the opposite side of the balance wheel. JD RIchard has an amazing video on this. does anyone have a video or some sort of demonstration on these...
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    Truing Caliper

    In my opinion you have much higher chance messing up the pivots going back and forth. But to each his own i guess, if it works it works. I would also have to say this may be better suited for a modern balance wheel rather than a split wheel.
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    Truing Caliper

    I get the idea and sounds good in theory but we rely on the arm of the caliper to gauge how flat and round the wheel is. If done as you said you would be relying on your eye being perfectly level with the balance and/or having constantly remove the balance from the stakes and back into the...
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    Truing Caliper

    most watchmakers have more than one truing caliper for this reason.
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    Reproduction Dial?

    call my guy he still does them
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    Watch case polishing tools

    it depends on the case. But yes on some cases I spent about 45min just buffing one edge. And the entire case took me about 3-4 days to finish. I have done the buff sticks and sanding and what not but i never liked the results, although i know there are some that can produce some amazing results...
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    Watch case polishing tools

    There is no reason why precious and plated metals cant be polished. jewelers do it all the time. it takes experience and can be done very well with little material removal. It all a matter of knowing what to use on what. I suggest Rio Grande for rouge, compounds, buffs, etc. 1. A variable speed...
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    A question about jeweling.

    LONG LIVE! Riverside Maximus
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    Reproduction Dial?

    Advanced Clock Repair Services - Dennis Kaye I used him a while back and he did a stunning job but with him and going to assume with anyone else it was quite pricey but the dial I sent him was very rare and worth about $600+ you can always look into clock dial repair shops instead of searching...
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    Picture tour of replacing a staff on a Waltham 6/0s wristwatch, enjoy!

    ahh timing washers forgot about those. I really hate swapping staffs but sometimes when Iam bored i do it on scrap balances just to get my practice up. Still very painstaking. I would also love to see a video on truing a balance I think the calipers I have arent very good I always have trouble...
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    Picture tour of replacing a staff on a Waltham 6/0s wristwatch, enjoy!

    this was awesome, I have done larger friction fit staffs for waltham/elgin 3/0 and 0, but I always had a hard time with the smaller 6/0 8/0 riveted staffs. Question how did you drill the hole? could a balance screw undercutter come in handy here as well or only if heavy spots happens to be by a...
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    Bad Mainspring?

    possible but also unlikely, however if it were to stop the movement it would happen well before 3 hours depending on which wheel has the bent tooth.
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    Repair manual for case pendants

    I mean its not easy to do, but it takes understanding of diameters, lengths, tap sizes etc........ keeping swiss movements with swiss cases and American movements with American cases would alleviate a lot of stress. I have assortments of case sleeves and I go by what is in the bottle. If they...
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    Bad Mainspring?

    what skutt said about testing the train and looking for that "reverse" in the escape wheel is essential with any movement service. However I think your issue might be in the escapement, the mainspring, or possibly a combination of both. A broken tooth would not cause a sudden loss of power...

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Weekly News 7/7/19 by Tom McIntyre