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Type: Posts; User: Clive603

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  1. Replies
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    Cloning looks reasonably practical if you have a...

    Cloning looks reasonably practical if you have a tame water-jet / laser cutter guy nearby.

    I have some of very similar concept from a UK firm. Also long out of business.

    Clive
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    Any of the known brand name drives should do just...

    Any of the known brand name drives should do just fine.

    Loss of torque at low speed is true but generally with a modern VFD you won't notice any difference in performance for changes within ± 1/3...
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    For one machine VFD is a slam dunk. Cheap enough...

    For one machine VFD is a slam dunk. Cheap enough these days.

    Especially if the motor is modern enough to have all 6 winding connections bought out into the junction box so it can easily be...
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    Another search term is "5C blank end arbor". More...

    Another search term is "5C blank end arbor". More UK than USA centric by the looks of it.

    Clive
  5. Thread: Taper Boring

    by Clive603
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    645

    If the material isn't exotic a tapered toolmakers...

    If the material isn't exotic a tapered toolmakers reamer or D bit would probably do it. Far as I know not something that can be bought.

    Basically put the taper on a round tool blank.

    For a...
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    Got given a pair of those Sony WH1000-XM3 cans...

    Got given a pair of those Sony WH1000-XM3 cans recommended back in November so her-ladyship could run the telly at her preferred volume on the, rare, occasions when I was forced to be evening social...
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    The inevitable failure mode is the capacitors...

    The inevitable failure mode is the capacitors dying. If nothing else breaks first the capacitors will simply run out of life.

    Start - stop cycles, heavy load changes, short term overloads and even...
  8. +1 for what Thermite says on the contactors. They...

    +1 for what Thermite says on the contactors. They need to go pronto.

    Forward - reverse pairs with mechanical interlocks built in and all the pesky changeover wiring pre installed can be found...
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    That looks to be a fairly early head in the...

    That looks to be a fairly early head in the advert.

    Size is deceptive. Beavers are significantly bigger than a Bridgeport and the head a little larger in relative dimensions. Maybe approaching 1/4...
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    spaeth Thanks for the tip about socket...

    spaeth

    Thanks for the tip about socket extension and ratchet to do up the drawbar.

    That makes my first D'oH moment of the year. Many more to come no doubt. I'll probably use a long tube spanner...
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    Interesting pictures spaeth Maybe mine will...

    Interesting pictures spaeth

    Maybe mine will end up being dragged into daylight soon.

    Pictures got me thinking about a a job I may have coming up next month that might work out well if the drive...
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    What the man said. Mine has sat in the...

    What the man said.

    Mine has sat in the cupboard for 20 years waiting for the "absolutely no other way to do it" job. I'll put money on being at least the third cupboard owner since it was new!
    ...
  13. I tend to use the 5-2 or 6-1 diets where you have...

    I tend to use the 5-2 or 6-1 diets where you have one or two starve days a week but otherwise eat normally. Still do breakfast on a starve day tho'. Clive sans breakfast is not safe to be within...
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    A four stroke radial needs odd numbers of...

    A four stroke radial needs odd numbers of cylinders to give an even firing intervals. It also makes the drum cam system engineering much simpler.

    Generally four stroke engines having even numbers...
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    Yep. Look up Megola. Clive

    Yep. Look up Megola.

    Clive
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    If anyone wonders why the drum cam system...

    If anyone wonders why the drum cam system operating several sets of valves per ring was used on poppet valve radials they need only take a look in the gear case of a Bristol sleeve valve radial. Each...
  17. I'd be interested in any practical responses that...

    I'd be interested in any practical responses that are much simpler than the old style "spend a year making a Bridgeport into a clunky CNC running a dubious control system" too.

    For me doing mostly...
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    As I understand it the specification was...

    As I understand it the specification was originally a slope, 1 1/2" per foot or 0.125 per inch with a unidirectional tolerance.

    Working from the intersection makes sense in those terms given that...
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    Almost certainly the earliest version of the...

    Almost certainly the earliest version of the Boxford milling attachment. Basically the one shown on the lathes.co.uk site in the first "mounted on the machine" picture below the one showing all the...
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    Bottom line when it comes to casual VFD...

    Bottom line when it comes to casual VFD conversions of anything with a conservative motor fit with a decent power margin over what would normally be needed :-

    Operating over ± 1/3 rd of nameplate...
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    Its a water bowl for dipping the tool into for...

    Its a water bowl for dipping the tool into for cooling off when doing basic grinding to shape. Heavy grinding with a coarse wheel rapidly makes things too hot to handle if not dipped regularly.
    ...
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    Actually they can. I have a 10 hp Teco box,...

    Actually they can.

    I have a 10 hp Teco box, modified by Drives Direct to voltage double 220 in to 440 out, sitting on my shop wall thats been doing that for over 10 years. Basically low rent...
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    Two fundamental issues with DRO on the compound....

    Two fundamental issues with DRO on the compound.

    Firstly it necessitates an extra data cable that cannot invariably be kept out of the working area. Whether the lathes or yours.

    Secondly the...
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    Don't be flippant. It is important to know how...

    Don't be flippant.

    It is important to know how much metal is being taken off and how long it takes.

    Firstly to assess how efficiently you are running the process. Things change and doing what...
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    Consider (temporary?) sub divisions to make a...

    Consider (temporary?) sub divisions to make a "not so cold" corner around the machines.

    My pal Mike made a "box" in his barn workshop from chipboard paneling on 2 x 4 framing. With a similarly...
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