Another Broaches question

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  • #49373
    namonllor1953
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    • Topics Started: 21
    • Total Posts: 152

    Hello folks,
    I’ve been looking at purchasing a set of smoothing and cutting broaches for clocks and pocket watches. I’m not sure of the size ranges I should be looking at. If someone might throw me a clue, I’d surely appreciate it.
    thanks

    #61103
    bernie weishapl
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    • Topics Started: 58
    • Total Posts: 1218

    Ren I started with these for cutting. http://timesavers.com/i-8944714-10-piece-cutting-broach-set-for-large-clocks-031-188.html
    Bought this set for smoothing. http://timesavers.com/i-9530638-6-piece-swiss-smoothing-broach-set-047-118.html

    From there I added on a as needed basis.

    #61104
    chris mabbott
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    • Topics Started: 119
    • Total Posts: 1525

    Hey Ren, I think the same as Bernie, 0.05mm – 3mm
    I’m not too familiar with clock pivot diameters so maybe you’ll need a larger size than 3mm

    Ain’t tool buying addictive and loads of fun, or is that just moi 😆

    #61105
    namonllor1953
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    • Topics Started: 21
    • Total Posts: 152

    Thank you guys!!

    #61106
    arutha
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    • Topics Started: 85
    • Total Posts: 1536

    That size range is good, french clocks can go smaller than .5mm on some of the pivots, the fly pivot I did for Jan which has gone missing in the post was around .4mm. Some centre arbor bushes are much bigger than 3mm. If you intend to mess about with lever platforms you will find a lot of those are not fully jewelled and will need bushing, you are then going down to watchmakers broaches(which will also be handy for a lot of early european pocket watches). Barrel bushing uses around 6mm broaches and I now have a nice collection of tapered reamers for bigger holes too.
    Paul.

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namonllor1953Another Broaches question