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  1. #16
    Join Date
    Jan 2004
    Location
    Mackay North Qld
    Posts
    6,446

    Default

    Can I draw your attention to one of our guys?
    https://metalworkforums.com/f65/t203...=grinder+belts


    Also i have looked at belts from:
    Artisan Supplies
    https://www.artisansupplies.com.au/p...brasive-belts/
    also a good read on choosing belt grinder belts.
    https://www.artisansupplies.com.au/k...-buyers-guide/

    and purchased ceramic belts from
    Creative Man
    https://creativeman.com.au/accessories-3/

    Grit size varies with the suppliers.

    Grahame

  2. #17
    Join Date
    Jan 2004
    Location
    Mackay North Qld
    Posts
    6,446

    Default

    Quote Originally Posted by paul33 View Post
    2) With the drive wheel and tracking wheel, how did you machine the crown on the wheels to centre the belt?
    I have a manual lathe (non CNC) and I am not sure how to machine this..

    paul33

    Here are 3 separate methods of machining the crown- from utube.


    Belt grinder pulley crown machining

    https://www.youtube.com/watch?v=vXLXDj-L8aw

    https://www.youtube.com/watch?v=iel8FAGTmvg


    This one with taper attachment- not many lathe owners have them.

    https://www.youtube.com/watch?v=CoGIon_0kWo

    Hope it helps

    Grahame

  3. #18
    Join Date
    Mar 2009
    Location
    Melbourne
    Age
    54
    Posts
    825

    Default

    G'day Paul,
    Thanks mate.
    I bought my Norton Blaze belts from Gameco Artisan Supplies who ship nationwide but I'm keen to try the 3M Cubitron belts from Weber abrasives.

    I haven't actually crowned either of the wheels at this point in time and everything seems to track pretty well. There is a very slight side to side wobble in the coarser belts but this is only minor. I'm going to try the masking tape trick on the tensioner wheel at some point just to see if this makes any difference and if so I might crown it when I machine up the final drive wheel. I was not planning to crown the drive wheel though.

    I haven't thought about how to crown the wheel but if I do, I reckon mark the center of where the belt runs on the wheel then machine using the compound by bumping it over a bees dick each way. This is probably not ideal as it's going to be more angular than round but if you machine a bit of a flat in the middle so there's no point it shouldn't be too hard the belts.
    Cheers,
    Greg.

  4. #19
    Join Date
    Nov 2016
    Location
    Gulfview Heights, Adelaide
    Posts
    83

    Default

    Quote Originally Posted by Grahame Collins View Post
    paul33

    Here are 3 separate methods of machining the crown- from utube.


    Belt grinder pulley crown machining

    https://www.youtube.com/watch?v=vXLXDj-L8aw

    https://www.youtube.com/watch?v=iel8FAGTmvg


    This one with taper attachment- not many lathe owners have them.

    https://www.youtube.com/watch?v=CoGIon_0kWo

    Hope it helps

    Grahame
    Thanks Grahame, this is very helpful. I don't have a taper attachment but I should be able to use the compound slide.

    Paul

  5. #20
    Join Date
    Nov 2016
    Location
    Gulfview Heights, Adelaide
    Posts
    83

    Default

    Quote Originally Posted by twopintsplease View Post
    Paul have you tried Weber Abrasives in Welland ?
    Thanks for this information. I did not know about Weber Abrasives, I will check them out soon.

    Cheers,
    Paul

  6. #21
    Join Date
    Nov 2017
    Location
    Geelong, Australia
    Age
    57
    Posts
    2,651

    Default

    Quote Originally Posted by Grahame Collins View Post
    paul33

    Here are 3 separate methods of machining the crown- from utube.


    Belt grinder pulley crown machining

    https://www.youtube.com/watch?v=vXLXDj-L8aw

    https://www.youtube.com/watch?v=iel8FAGTmvg


    This one with taper attachment- not many lathe owners have them.

    https://www.youtube.com/watch?v=CoGIon_0kWo

    Hope it helps

    Grahame

    Thanks Grahame - that second video is a clever, simple idea - poor mans copy lathe...

    This one: https://www.youtube.com/watch?v=iel8FAGTmvg
    Jump to about 8.50 for the interesting bit.


    Steve

  7. #22
    Join Date
    Jul 2013
    Location
    Victoria
    Posts
    9

    Default

    Well done Greg, I watched Jeremy's build series on YouTube and intend building one when time permits. Your mods and photos will be very helpful when I do, thanks for going to the trouble of posting your build.

    Sent from my SM-N950F using Tapatalk

  8. #23
    Join Date
    Nov 2017
    Location
    Geelong, Australia
    Age
    57
    Posts
    2,651

    Default

    Its a few months down the track now - hows the grinder going Greg?
    Anything you'd do differently or improvements/accessories that you've come up with?

    Steve

  9. #24
    Join Date
    Mar 2009
    Location
    Melbourne
    Age
    54
    Posts
    825

    Default

    Thanks Doug, it's a good design and well worth the effort to build if you're doing serious grinding.

    G'day Steve, I haven't used it a lot but Charlie uses it most days grinding both hammers he's forged and knives and he's still happy with it.
    I machined up the larger drive wheel (uncrowned) and put a bit of a crown on the tensioner wheel. Crowning the tensioner made bugger all difference as far as I can tell. When I made the tensioner I overshot the bore for one of the bearings by a thou and I suspect the slight side to side belt movement might be due to this. At some point I'll machine a new one but it's pretty low on the list right now.

    Gerr Schmitt Grinder 33.jpg

    Nothing new on the attachments front, I came across a really good design for a table which I'll adapt for this machine at some point but again, it won't happen in a hurry.

    I don't know if it's the ceramic belts or not but it makes a much bigger mess than the little Multitool linisher used to so the next grinder related job will probably be some sort of box with filtered extraction to minimise the dust distribution.
    Cheers,
    Greg.

  10. #25
    Join Date
    Nov 2017
    Location
    Geelong, Australia
    Age
    57
    Posts
    2,651

    Default

    Thanks for the feedback Greg. Great to hear its working out well and that Charlie is still keen.

    I sold my old vintage belt sander recently as it just wasn't fitting with everything else in the workshop so currently only have the horrible Ozito combo grinder/sander left. Its massive 240 watts barely copes with removing a burr so definitely planning on buying/building something better.
    I don't actually need another project so if I build one it will just be constructed to a proven design - without any R&D or decisions involved!

    Steve

  11. #26
    Join Date
    Aug 2011
    Location
    Perth, Western Australia
    Age
    67
    Posts
    362

    Default

    What size motor is used?
    Would you go larger or small if building another one.

    Tony

  12. #27
    Join Date
    Mar 2009
    Location
    Melbourne
    Age
    54
    Posts
    825

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    I used a 1.5kw (2hp) and it seems about right, probably wouldn’t go any smaller though.
    Cheers,
    Greg.

  13. #28
    Join Date
    Oct 2019
    Location
    Tasmania
    Age
    53
    Posts
    149

    Default

    I dont want to hijack your thread but I built a 2" x 72" a few years ago out of scrap that was laying around and it is possibly the most used tool in my garage, I love it.

    Nothing fancy like the ones you guys have built but its stood the test of time.

    IMG_4533.jpg

  14. #29
    Join Date
    Jul 2006
    Location
    Athelstone, SA 5076
    Posts
    4,255

    Default

    Quote Originally Posted by kwijibo99 View Post
    I used a 1.5kw (2hp) and it seems about right, probably wouldn’t go any smaller though.
    Cheers,
    Greg.
    1.5kw is same on mine......does the job but push a little header and it soon loads up...

    2kw would have been better

  15. #30
    Join Date
    Jul 2006
    Location
    Athelstone, SA 5076
    Posts
    4,255

    Default

    Quote Originally Posted by danshell View Post

    how do you adjust the tracking?

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