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  1. #1
    Join Date
    Jul 2008
    Location
    near Warragul, Victoria
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    3,718

    Default Tool post grinder

    Spotted this :

    LittleMachineShop.com - Tool Post Grinder (220VAC)

    I like the variable speed, but the motor looks a little small and underpwered . There is another smaller one there that looks like it has a sewing machine motor on it .

    Mike

  2. #2
    Join Date
    Sep 2006
    Location
    Mallacoota,VIC,Australia
    Age
    53
    Posts
    1,010

    Default

    HI,
    You will find some Plans if You go to this Link http://www.woodworkforums.com/f65/to...-plans-138306/ . The Link is to a recent Thread that I started.
    All The Best steran50 Stewart

    The shortest way to do many things is to do only one thing at once.

  3. #3
    Join Date
    Jul 2008
    Location
    near Warragul, Victoria
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    3,718

    Default thanks

    Yes I spotted it ... very interesting . I posted a link to your plans on the Southbend Yahoo group .. 1930's technology still works

    Are you making that particular Grinder yourself ??? Where would you source a motor like that ?

    I did a TAFE lathe course last year ..I recomend it , but may be to far for you ....

  4. #4
    Join Date
    Sep 2006
    Location
    Mallacoota,VIC,Australia
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    53
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    1,010

    Default

    HI,
    Since seeing those Tool Post Grinder Plans I have done more Research and have decided to make a 1/3hp (250watt) Tool Post Grinder. I am looking at using a Quorn Motor Quorn Mk 1 - 0.18Kw 240v 2800rpm Mark 1 motor - Hobby Mechanics or I might see what Royce Cross has available. Although the Quorn Motors are listed as 180 Watt, I bought one motor of them late last to build a Quorn and it was 250 watt.
    Since I am going to Build a bigger Tool Post Grinder I will be designing something Myself - No doubt I will use ideas from existing Designs.
    All The Best steran50 Stewart

    The shortest way to do many things is to do only one thing at once.

  5. #5
    Join Date
    Oct 2007
    Location
    Sydney
    Posts
    3,112

    Default

    Mike I was considering that TPG myself and from what I heard it was "ok". Like a lot of Chinese tools like this, a bit of a "kit" when it's unpacked, but a good base on which to improve. Getting it out from the US however isn't cheap. While I was poised to buy it, in the end I've decided not to get a TPG and will probably make other arrangements when I need to do work like this.

    I do like the way a drill chuck can be fitted for cross drilling in the lathe. I have another fixture to hold a Proxxon drill, it works extremely well but I am very limited with the size drill bits I can chuck in it. This TPG would enable a much larger drill chuck to be used.

    Pete

  6. #6
    Join Date
    Nov 2008
    Location
    Perth WA
    Age
    71
    Posts
    6,458

    Default

    I don't know if you blokes have looked at some of the old posts related to TPG's but here is one about my Dumore 44 and the fun and games involved in trying to acheive an acceptable finish. http://www.woodworkforums.com/f65/to...51/index2.html It may be of some interest.

    If do end up buying or making your own, make sure everything is covered up when you use it. The destructive grit goes everywhere.

    BT

  7. #7
    Dave J Guest

    Default

    LMS had a clearance on the smaller grinders a few months back, I think they where $80. The people that bought them seemed happy with them.

    Dave

  8. #8
    Join Date
    Jul 2008
    Location
    near Warragul, Victoria
    Posts
    3,718

    Default Anorak BOB

    I read your posts .. I recall seeing a home made TPG a chap in the UK had made . After extensive research and work, he found the best results from a grinder he built with plain bushes rather than ball races .. he tried all types of designs ..but the plain bushes beat everything

    Mike

  9. #9
    Join Date
    May 2010
    Location
    Lower Lakes SA
    Age
    58
    Posts
    2,607

    Default

    This one?

    [ame=http://www.youtube.com/watch?v=d-woPRV_lac]‪Toolpost grinder‬‏ - YouTube[/ame]

  10. #10
    Join Date
    Jul 2008
    Location
    near Warragul, Victoria
    Posts
    3,718

    Default Yes

    YES thats the one ....

    I wondered about using a universal motor from a domestic sewing machine - they will run from both AC and DC , unusual motors and they lend themselves to easy speed control .
    Silicon Chip Online - 10A Universal Motor Speed Controller, Mk.2

    The problem is , not enough OOMPH . Maybe two working together would work . OP shops are full of old sewing machines with those motors

    Sew-Classic Blog: Comparing Sewing Machine Motors in Simple Terms


    How real electric motors work



    MIKE

  11. #11
    Join Date
    Jul 2008
    Location
    near Warragul, Victoria
    Posts
    3,718

    Default Ideas

    lots of ideas here

    Toolpost Grinder

    this motor is interesting

    https://www.petenplanes.com.au/field.../prod_865.html

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