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  1. Replies
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    For traditional looking finishes it helps to...

    For traditional looking finishes it helps to think about the tools that were available as well as the power of traditional hand skills. Scrapers, swiss pattern files, burnishers and leather buffs...
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    The purpose for gold tinted lacquer is to imitate...

    The purpose for gold tinted lacquer is to imitate the appearance of cementation brass. Cementation brass became technologically obsolete in the 2nd quarter of the 18th century but was produced...
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    One can make gold tinted lacquer by making...

    One can make gold tinted lacquer by making tinctures of tumeric and dragon's blood and mixing them in regular lacquer dissolved in denatured alcohol. Use some gum elemi as well and a very fine sable...
  4. Start collecting cans. Pretty soon you will have...

    Start collecting cans. Pretty soon you will have enough raw material to cast your own lathe.
  5. Yes, the antimicrobial properties of copper...

    Yes, the antimicrobial properties of copper alloys is well known and would be the best material for things like hand rails but i think the comment above is probably the truth. Just too "expensive"....
  6. There is only so much to get out of a recycled...

    There is only so much to get out of a recycled screen door.
  7. Referring to the Corona virus as the "chinese"...

    Referring to the Corona virus as the "chinese" virus is bigotry, please stop.
    And yes, the Orange One is a bigot. And a misogynist. And a racist. And a xenophobe, just to name a few of his more...
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    Wait, a single person uses more than 1/2 a roll...

    Wait, a single person uses more than 1/2 a roll of tp a day? I eat alot of beans and rice and need maybe 4 or 5 squares a day.

    Reminds me of a couplet from book I, chapter 13 of Rabelais-

    'Who...
  9. I was very lucky to spend about an hour with the...

    I was very lucky to spend about an hour with the president of the American Swiss Jewel Company in his office on Chestnut st here in Philly. I had sent an email asking about small quailty of jewels...
  10. Interesting. Did they make the raw crystals as...

    Interesting. Did they make the raw crystals as well?
    One example of modern use of synthetic sapphire is cell phone camera lenses.
    Ruby bearings are essential for fine mechanical instrumentation...
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    The orreries in the arches of the 2 tallcase...

    The orreries in the arches of the 2 tallcase orrery clocks are considerably simpler than the 2 stand alone ones. The Penn orrery is probably the best preserved of the lot. The Penn hospital clock was...
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    A sad loss for clock restoration. They could...

    A sad loss for clock restoration. They could supply sets of tuned bells for musical and chiming clocks.
    There were really funny letters in a case in the lobby where a group in Philly asked them to...
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    781

    One thing i will most definately fix is the...

    One thing i will most definately fix is the music. Right now, it sounds like a bag of hammers. It just needs to be carefully sorted.

    How does one post a picture? "Go advanced" is no help, just...
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    781

    Yeah, much better not to get involved. Guy...

    Yeah, much better not to get involved. Guy claimed to have West Dean horological training which is completely false.
    Joke's on him as not that many people actually care about or know the...
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    781

    Not a huge challenge, really. I have worked on...

    Not a huge challenge, really. I have worked on many 18th century tallcase clocks. The two big things are unbodging it and documenting it properly, which can only be done by somebody with real...
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    OT? The Drexel Rittenhouse Clock

    Really just want to toot my horn, but my proposal to restore and document the Drexel Rittenhouse orrey clock was approved today. The "most important clock in America" will finally be restored and...
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    Do worry, it's not a lathe but rather a recycled...

    Do worry, it's not a lathe but rather a recycled screen door.
  18. Replies
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    2,991

    A t-rest and a graver? I know it's been a long,...

    A t-rest and a graver?
    I know it's been a long, long time since t-rests were standard equipment on metal lathes, but it's not difficult and can be quite useful for radiusing and blending.
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    Dunno. I think there might be a terminology...

    Dunno. I think there might be a terminology problem. Not sure that a watchmakers smoothing broach is a good deburring tool. Clockmakers use oilsink cutters to debur/blend the edges of bushings.
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    Yes, they are for burnishing a hole in a brass...

    Yes, they are for burnishing a hole in a brass plate. They have have the same taper as 5 sided cutting broaches so they are intended to polish a pivot hole after fitting a new bush and cutting to...
  21. Here in Philly we have the following different...

    Here in Philly we have the following different electric transports:
    Third rail: broad st line and el.
    Catenary: Trolleys, regional rail and trackless trolleys.
    Battery: some of the bus routes are...
  22. We will never solve the problem if we stick with...

    We will never solve the problem if we stick with the 20th century idea of everybody driving, doesn't matter if it's gas or electric. What is efficient is electric mass transit.
    If we want to...
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    For some real zing, add a few teaspoons of yellow...

    For some real zing, add a few teaspoons of yellow cake to yer morning glass of orange tang.
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    For a given module (or dp) and the total number...

    For a given module (or dp) and the total number of teeth in both gears there is a theoretically correct center distance where the two pcds are tangent. This is not an approximation.
    Module = ( 2 *...
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    I wonder what a motorcycle with a rotating block...

    I wonder what a motorcycle with a rotating block engine would be like except super dangerous? Might be hard to steer?

    Mechanical inversions of this type are interesting but are often impractical....
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