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Thread: sharpening systems.

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  1. #1
    Join Date
    Nov 2006
    Location
    durban s africa
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    1,525

    Default sharpening systems.

    Not having one and doing most things free hand is probably one of the biggest setbacks in my workshop when it comes to my projects,
    I cant justify buying a fancy tool and cutter grinder.
    Has anyone built something like this and what do you think of it. ?
    https://www.youtube.com/watch?v=bzEQCvE1cIk

  2. #2
    Join Date
    Aug 2009
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    6,664

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    That looks like a pretty good project. I would make one. I think your biggest issue would be finding the right type wheels to fit a bench grinder.

    I've always thought of making a similar fixture to hold a dressing nib. This give me some ideas.

    JL.............

  3. #3
    Join Date
    Dec 2015
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    Chilliwack, BC, Canada
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    I looked at that some time ago and liked what I saw. I don't see paying for the shipping out from that side of the world but overall the cost of the kit and parts is fairly reasonable. Keep in mind that the Australian dollar reduces the price in US dollars by quite a bit. I even get a break on my Canuckistan buck! Not much of one but still...…

    Perhaps more importantly given that the plans and other parts are all in metric and my stock and cutter shanks are all in inch I'm thinking to buy the drawings and perhaps a few of the bits and bobs (like the angle setting template) and convert sizes to inches as required.

    Have you seen Harold Hall's grinding rest and ADVANCED GRINDING REST? He also has a number of other sharpening aids that fit on these which are shown in the pictures and some other tricks in his projects and plans index. Might be worth looking at as well.

    All in all I like the very direct approach of the Acute system's base and basic arms for end mills and drills. And perhaps something extra to go with it for things like center drills and counter sinks.

  4. #4
    Join Date
    Dec 2016
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    Helsinki, Finland, Europe
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    3,671

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    Damn, someone balance that grinder!

  5. #5
    Join Date
    Mar 2013
    Location
    West coast of Canada
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    687

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    I built the grinding rest and all of the accessories from Harold Hall's book "Milling A Complete Course" a number of years ago and find it quit handy for a lot of sharpening jobs including end mills. I mounted a cheap Grizzly grinder on steel plate with several sets of holes in it so the grinding rest could be moved around to suit the sharpening job I am doing. I also did some work on the grinder to make sure it was running smoothly and the grind stones would run true.
    Larry

  6. #6
    Join Date
    Aug 2002
    Location
    Albuquerque
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    3,155

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    A pretty cute system . IF and I mean IF you can ever get a "bench grinder" sit that still. The basic device may well justify building a grinder that can live up to the need. :-)
    ...lew...

  7. #7
    Join Date
    May 2013
    Location
    UK, near London
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    1,293

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    Wibbly-wobbly. Table looks it's about 1/16 thick. Typical problem of most recent designs. If you look at an old pro-shop grinder from the '50s the emphasis is on lots of solid cast iron. HH's one is similar perched up on little legs like a stalk (bird). Have a look at the Worden grinder design then design you own version using lumps of 1/4 in plate.
    If you are just doing lathe tools then sure rigidity doesn't matter. Just make a block of wood whose height gets you up the curve of the wheel to give you a 10 degree angle. 10 degrees is fine for every face. No need to get all precious about it.
    But if you are doing mills and reamers then have a think about it. Even 1 thou movement nearer the wheel as you traverse due to lack of solid mounting ruins your symmetry - end mill turns into single edge flycutter.
    Last edited by Baz; 10-08-2019 at 06:10 PM.

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