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  1. #61
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    Cored(240v) no variable speed

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  3. #62
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    So I've flattened the back of an old Marples chisel (by crikey it's hard steel). I did the grunt work on the motorised jig, and the good news is that the only dubbing was at the cutting edge, which has to be ground back anyway. Finished off polishing manually.

    Have almost put a flat bevel on it (atrocious condition before - sloped, bent, angled, convex, you name it). I have to say that this flat bevelling is a mug's game, and can't wait to get my grinder (in the next week with a bit of luck).
    Regards, FenceFurniture

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  4. #63
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    Quote Originally Posted by Simplicity View Post
    Cored(240v) no variable speed
    This device 2000W 220V SCR Electronic Voltage Regulator Module Speed Control Controller HP | eBay will give you variable speed for any universal motor tools. Just put it into a box with a single powerpoint aon one side and powercable on the other end. I made two of them and use them all the time. Router, vacuum cleaner, hot air gun, drills... just don't overload it or the blue smoke escapes.
    Cheers,
    Joe
    9"thicknesser/planer, 12" bench saw, 2Hp Dusty, 5/8" Drill press, 10" Makita drop saw, 2Hp Makita outer, the usual power tools and carpentry hand tools...

  5. #64
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    Quote Originally Posted by fletty View Post
    PS, ProEdge belts are 50 x 785 and, Sandpaper Man's belts are not only cheaper but also have "tape" joins or "Nortape" joins which should eliminate/minimise the 'bump'?
    Have just measured the join as best I can on his 80 and 120 ceramics. The tape adds c. 0.05 to 0.1 of a mm. My recollection is that that is felt but my grey matter is getting greyer.

    Kerrie's out of ceramic belts at the mo but may be willing to have more made up.
    Cheers, Ern

  6. #65
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    Quote Originally Posted by jhovel View Post
    This device 2000W 220V SCR Electronic Voltage Regulator Module Speed Control Controller HP | eBay will give you variable speed for any universal motor tools. Just put it into a box with a single powerpoint aon one side and powercable on the other end. I made two of them and use them all the time. Router, vacuum cleaner, hot air gun, drills... just don't overload it or the blue smoke escapes.
    Can you ise this on a lathe or drill press?

    Dave TTC
    Turning Wood Into Art

  7. #66
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    Quote Originally Posted by DaveTTC View Post
    Can you ise this on a lathe or drill press?
    I wouldn't think any lathes would have a universal motor, nor DPs. Easy way to tell Universal from induction motors - Uni's are screamers and inductions are quiet rumblers. Inductions are big heavy suckers and so are usually (probably exclusively) in stationary machinery.
    Regards, FenceFurniture

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  8. #67
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    Thanks Brett

    Whats the easiest way round a variable speed on a drill press then. Or ahould i say cheapest

    Dave TTC
    Turning Wood Into Art

  9. #68
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    Quote Originally Posted by DaveTTC View Post
    Thanks Brett

    Whats the easiest way round a variable speed on a drill press then. Or ahould i say cheapest

    Dave TTC
    Turning Wood Into Art
    Move the belt to a different pulley!

  10. #69
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    Its only got three positions and is an awful pain to change and re tension

    Dave TTC
    Turning Wood Into Art

  11. #70
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    Quote Originally Posted by DaveTTC View Post
    Its only got the positions and is an awful pain to change and re tension
    Yup, that's why I have a Universal motor 750w 65Nm power drill mounted in a stand (apart from also getting up to 500mm travel with the particular set up). NCArcher et al can wax lyrical about motors, but a 3 phase induction motor with a VFD will give you variable speeds (but pulley changes are required for more torque). A DC motor is kinda halfway between a Universal & Induction in that it's reasonably quiet, variable speeds. There's another system that I know little about with some kind of sliding (?) belt variation (as used on the Jet JDP 2800 Drill Press) - Tony?
    Regards, FenceFurniture

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  12. #71
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    Halfway down the page of this article is a gif file that shows how it works.
    One of the pulleys is spring loaded to be at it's smalles diameter, to keep the belt tight, the other one is moved towards and away from the first one to vary its diameter. They work very well (I used to have one on my lathe for a few years, until it wore out - pulleys made from bakelite) and take very little maintenance.

    That may be the cheapest way to do it - if you can find a pair of those pulleys, Dave.
    Cheers,
    Joe
    9"thicknesser/planer, 12" bench saw, 2Hp Dusty, 5/8" Drill press, 10" Makita drop saw, 2Hp Makita outer, the usual power tools and carpentry hand tools...

  13. #72
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    The spring loaded pulleys are quite common on wood lathes. This is the Carbatec version but I think others (Hare and Forbes) also have them. Variable speed is operated by the lever on the front of the motor.

    Carbatec MC1100A.jpg

    Regards
    Paul
    Bushmiller;

    "Power tends to corrupt. Absolute power corrupts, absolutely!"

  14. #73
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    Iwonder how easy this would be to mod to my shopsmith?

    Dave TTC
    Turning Wood Into Art

  15. #74
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    There are some other powered flattening ideas here: Back flattening - horse power rather than hand power
    Cheers, Ern

  16. #75
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    Great ideas! Oh the agony of manually removing that last 1/4 of a mm of dip on the corner of a chisel

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