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Type: Posts; User: Troup

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  1. It's also important never to let the feed rate...

    It's also important never to let the feed rate drop to anything near zero for any length of time, even a hummingbird's heartbeat.
    This means using power feed wherever possible, and if you hand feed,...
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    "Punishing someone who puts their hand up and...

    "Punishing someone who puts their hand up and confesses after having screwed up is a bit like beating a dog after he came to you at your call."
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    Anyone ?

    Anyone ?
  4. Voltaire wrote " Le mieux est l'ennemi du bien "...

    Voltaire wrote " Le mieux est l'ennemi du bien "

    He may have stolen if from the esteemed Mr Clarke, but only if one of them had access to a time machine....


    I guess that's not beyond the...
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    Talking of revolutionary new pumps which give you...

    Talking of revolutionary new pumps which give you something for nothing, we used one at my club-operated skifield to pump water up to a high level daylodge, higher than the level of the highest...
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    I never occurred to me for anyone else to feel...

    I never occurred to me for anyone else to feel uneasy on my behalf.

    I was speaking as someone who has "an apparently sound argument which gives the wrong answer".

    I was saying I would expect...
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    Thoughts on metric vs imperial re threading

    Hmmm - I don't think so, unless the correct gearwheel is fitted -- the spur (generally helical) pinion or possibly wormwheel engaging the leadscrew -- for the pitch to be cut.

    The "same number...
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    Hmmm... I just don't get half of the small,...

    Hmmm...
    I just don't get half of the small, plan view diagrams on p122 of the excellent Vardex catalogue, with particular reference to what they convey about the sign of the helix angle.

    Here's...
  9. That's a bunch of wisdom crammed into one...

    That's a bunch of wisdom crammed into one paragraph. It reminded me of an old homily which in some circumstances is a helpful antidote (the name "Holman" springs to mind as the possible originator):...
  10. I think the predominance of posts instancing the...

    I think the predominance of posts instancing the 'wisdom' of old codgers, by quoting ingenious or vile put-downs, shows up an unfortunate side of machine shop culture.

    Of course it's not just...
  11. Thread: Shrink fit

    by Troup
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    15,902

    At first reading I didn't see anything wrong with...

    At first reading I didn't see anything wrong with this claim but I just happened across it again and I think it's not so.

    In typical cases of elastic preload - the classic ones being bolts (once...
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    Or "Flaky Jake" ... (nice line about the...

    Or "Flaky Jake" ...

    (nice line about the on-switch, BTW)
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    The front faces of the table look more like they...

    The front faces of the table look more like they were embossed with a piece of chequer plate...
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    Why not just make the handle into an...

    Why not just make the handle into an old-fashioned, 'child's play'- simple torque wrench, with a curved scale and a long pointer measuring the deflection over the length of the handle shaft?

    You...
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    I would have thought above 25 degrees PA it would...

    I would have thought above 25 degrees PA it would also start looking more like a spline than a gear

    BTW, I wasn't talking about 8 teeth as a minimum, but about the lowest number of teeth cut by a...
  16. Thread: OT New Zealand

    by Troup
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    1,945

    The best jet boat rides are in the mountainous...

    The best jet boat rides are in the mountainous regions of the South Island (aka the mainland)

    AFAIK there's no suitable rivers in the region north of Auckland, known as Northland (too flat)
  17. Thread: OT New Zealand

    by Troup
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    14
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    1,945

    The trouble with Ostraylia (putting on best kiwi...

    The trouble with Ostraylia (putting on best kiwi accent) is it's full of bloodly Ostraylians! ....

    along with kiwis who couldn't keep up on the mainland ;-)
  18. Is it possible to get more oxymoronic than...

    Is it possible to get more oxymoronic than "Reality TV"?

    I think it's right up there with "Military Intelligence" and "Mobility scooter"

    I guess on reflection perhaps there is one even more...
  19. Thread: OT New Zealand

    by Troup
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    1,945

    Hard to know what to recommend given that you...

    Hard to know what to recommend given that you don't mention your interests.

    You could easily spend the entire 3 weeks in the northern tip (ie entirely north of Auckland) - I did that a few years...
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    Phew --- next best thing to hearing a voice...

    Phew --- next best thing to hearing a voice whispering: "Camille sleeps with the sharks" in a thick, husky and reassuring Italian accent :)

    Seriously, though, thanks for your vigilance and prompt...
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    Stan Are you suggesting making the 0.157 drill...

    Stan

    Are you suggesting making the 0.157 drill into a piloted counterbore, rather than a simple flat bottomed drill? If the latter, I'd be inclined to muse that it might walk excessively in such a...
  22. I've heard that's what some Roman Catholics are...

    I've heard that's what some Roman Catholics are really running through in their mind when they pretend to make that odd gesture they're required to do...
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    The genuine SuperNuts have a modified thread...

    The genuine SuperNuts have a modified thread profile, which is engineered to deform in such a way as to supposedly improve the load carrying capacity.

    I've never sectioned one to check whether...
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    Could get expensive, having clients walk around...

    Could get expensive, having clients walk around barefoot - apart from having to discount their prices, you'd have to pay a humungous sweeeetener to OSHA, no?
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    Well, speaking for myself what's wrong with it is...

    Well, speaking for myself what's wrong with it is that I feel extreme envy for the powers of organisation, time management and discipline of anyone who can keep their shop in that condition, to the...
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