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    For interest - How were fly-presses made ?

    Sorry John, no cast steel, just the nicest blemish-free 'high duty' iron (their term) in their presses, not a pore or hard spot to be seen. As to personnel, the J H fellows in Sydney were a pleasure to deal with, you could easily sense the pride in their products. Seems they've diversified...
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    Metric drill set types questions

    Methinks Barbter has the Dormer A190 sets, #202 1-6mm in 0.1 steps & #203 6-10 in 0.1 steps as have I. Also have the Patience & Nicholson M5 set1.0 -3.00 in 0.05 steps & 3.0 -5.0 in 0.1 steps. A bit like a gauge block set, I'll probably die with most unused but before anyone says...
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    For interest - How were fly-presses made ?

    Back in the 1840s Holtzapffel says most flypresses in England were made with a bronze nut on account of the cast iron of the day being too 'crumbly' to screwcut a large coarse thread ?? Both my Oz-made, late 1990s, have the threads cut directly in the casting. That's a 3 tonner & an 8 tonner...
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    drum shaped sheet metal production

    Seriously this time, I concede the stainless requirement for foodstuffs BUT why bother to manufacture EVERYTHING. 2mm thick wall sounds like overkill anyway. Why not approach a pots & pans manufacturer who likely has a vessel of the dimensions near enough already in production. All you need is...
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    drum shaped sheet metal production

    First up I wouldn't use stainless, rather mild steel, BUT if smitten by stainless I'd hunt for seamless tubing .. online metals.com list 12" od 1/8" wall seamless 304. Alibaba would probably supply exactly what you want. OR you might find stainless saucepans that could be de-bottomed &...
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    Blanchard coolant filter/flocculant

    I missed the 120 grit .. sounds like a recipe for disaster, virtually a pre-glazed wheel. Where are all the grinding gurus? I know nothing about Blanchard, precious little about the others, but fine grit & large contact area .. nah. Nah to diamond on iron too.
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    OT - BA Threads to history of the Inch - et al!

    When Sir Henry Royce died in 1933 the company changed the ground of the RR badge from red to black as a mark of respect .. so pre 1933 are Red Label, post '33 are Black Label. Perhaps later Red Label is in the hope of a 'second coming'?
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    Blanchard coolant filter/flocculant

    Stupid question: would a magnet drag the iron out or are there other sources of the 'black' ?
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    Help. Machining an Alloy Steel Socket Head Screw

    As often the case not enough info. Add to all the suggestions re work support maybe your SFM is too low, a big part of carbide's advantage is simply being able to tolerate a higher cutting edge temperature than the workpiece can. If not too many pieces were involved I'd simply grind them .. & I...
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    new format - a thumbs-down

    Our Leader did say The Forum would go down on Monday .. just did not say how far. Remember, as an old boss of mine said 'bullshit baffles brains'.
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    new format - a thumbs-down

    You don't think all that white space being complained about could be ad-space? I'm sure, if that's the case, it'll be filled up with garbage soon enough.
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    OT - BA Threads to history of the Inch - et al!

    I think the more senior Poms/Ozzies (my age) will be able to tell you, even beyond Lucas it was odd number BA for electrical, even numbers for small mechanical. I don't know if that was a written standard/advice but it was definitely the observed practice. For example all domestic switches...
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    Electroplating an air tank?

    Maybe so up your way, here the galvanising is inside & out. Ditto fittings.
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    Electroplating an air tank?

    Seems everyone's forgotten about the white fluff you get in galvanised airlines. No, I don't think zinc is a good option unless maybe passivated.
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    Tool bit grinding for really slow cutting speeds???

    Make a flat washer of appropriate steel, machine the features, then twist to pitch. No?
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    OT Finishing CAST IRON Cylinder with a Broach? Excript from Ford Production Manual

    Have to correct you there John, all MGs after the 'J'type (1933) had full flow filters, so I'd expect that applied to most Pommie cars at the time. Obviously England was hot & dusty in those days & they never did get water-tightness right in the 'cabin'.
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    Are all the old Thread pitches still needed? Thread per inch, and some odd metrics.

    Hey Buck, I thought it was fair your dropping one of yours (27 tpi 1/8" NPT) and one of ours (19 tpi 1/4" BSP also ISO) but now you're leaving us out in the cold?
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    help the rookie with a lathe fundamental question

    Obviously the PhD didn't include English .. 'elude':to avoid or escape by dint of dexterity or skill: 'allude': to refer casually or indirectly.
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    Colchester CHIPMASTER question.

    Hi Wally, I was confused by your comment about 'complete assembly' .. I thought 'with the headstock'. Yes the gearbox comes off as a self-contained unit. It's 20+ years since I had mine off so a manual with stand you in better stead than my memory .. there ARE freebies for download on the Web...
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    Colchester CHIPMASTER question.

    Hi Wally, taking the headstock off the bed gains you exactly nothing except complete loss of headstock alignment. What sort of viscosity does the leaked oil have? The correct headstock oil is slightly thicker than kerosene, gearbox oil somewhat heavier. One thing you could do is examine the...
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