Free 173 Best Homemade Tools eBook:  
Get 500+ tool plans, full site access, and more.

User Tag List

Results 1 to 9 of 9

Thread: Homemade Aluminum 2x72 Belt Grinder (no weld)

  1. #1
    Supporting Member mr95gst's Avatar
    Join Date
    Apr 2014
    Location
    Murfreesboro, TN, USA
    Posts
    74
    Thanks
    23
    Thanked 179 Times in 37 Posts

    mr95gst's Tools

    Homemade Aluminum 2x72 Belt Grinder (no weld)

    About a year ago I built a 2x72 belt grinder. It is made almost entirely from aluminum scraps that I sourced at a salvage yard. It is powered by a 90vdc treadmill motor and controlled with a DC drive. The wheels were all turned from blanks that I cast from my aluminum foundry. One feature that I incorporated into my design that I have not seen on others is a reversible tool arm. One side has a flat platen and the other holds a small wheel attachment.

    This is now my go to tool. If you have been thinking about making or buy a 2x72 grinder, then do it. These things chew through metal at a rate I did not image. Shaping metals has become so much easier.


    These are pictures of the roughly casted billet and turning it down to make a roller.
    Homemade Aluminum 2x72 Belt Grinder (no weld)-imag1055.jpg

    Homemade Aluminum 2x72 Belt Grinder (no weld)-imag1056.jpg

    Homemade Aluminum 2x72 Belt Grinder (no weld)-imag1069.jpg

    These are picture where I made the tool arm and platen. I don't have a rotary table so I used a router to cut the radius for tilting the platen.
    Homemade Aluminum 2x72 Belt Grinder (no weld)-20170516_180038.jpg
    Homemade Aluminum 2x72 Belt Grinder (no weld)-20170516_183055.jpg
    Homemade Aluminum 2x72 Belt Grinder (no weld)-20170516_192329.jpg
    Homemade Aluminum 2x72 Belt Grinder (no weld)-20170528_132849.jpg
    Homemade Aluminum 2x72 Belt Grinder (no weld)-20170528_132858.jpg

    These are picture of the body mocked up and partially assembled.
    Homemade Aluminum 2x72 Belt Grinder (no weld)-20170528_151315.jpg

    Homemade Aluminum 2x72 Belt Grinder (no weld)-20170528_151354.jpg

    Homemade Aluminum 2x72 Belt Grinder (no weld)-20170812_123033.jpg

    Homemade Aluminum 2x72 Belt Grinder (no weld)-20170812_123058.jpg

    Homemade Aluminum 2x72 Belt Grinder (no weld)-20170812_123116.jpg

    Homemade Aluminum 2x72 Belt Grinder (no weld)-20170812_123124.jpg

    This is turning the large wheel that added width to the pulley on the treadmill motor. I didnt want to make an entire wheel so i just added on to what was already on the motor.
    Homemade Aluminum 2x72 Belt Grinder (no weld)-20170816_192846.jpg

    This is the bracket that hold the small roller for the small wheel attachment.
    Homemade Aluminum 2x72 Belt Grinder (no weld)-20180127_173723.jpg

    These are pictures of the completed grinder.
    Homemade Aluminum 2x72 Belt Grinder (no weld)-20180127_185228.jpg

    Homemade Aluminum 2x72 Belt Grinder (no weld)-20180127_185234.jpg

    Homemade Aluminum 2x72 Belt Grinder (no weld)-20180127_185240.jpg

    Homemade Aluminum 2x72 Belt Grinder (no weld)-20180127_185250.jpg

    Homemade Aluminum 2x72 Belt Grinder (no weld)-20180127_185321.jpg

    Homemade Aluminum 2x72 Belt Grinder (no weld)-20180127_185434.jpg

    Homemade Aluminum 2x72 Belt Grinder (no weld)-20180127_185442.jpg

    Homemade Aluminum 2x72 Belt Grinder (no weld)-20180127_185502.jpg

    Homemade Aluminum 2x72 Belt Grinder (no weld)-20180127_185507.jpg

    Homemade Aluminum 2x72 Belt Grinder (no weld)-20180127_185515.jpg

    Homemade Aluminum 2x72 Belt Grinder (no weld)-20180127_185536.jpg

    Homemade Aluminum 2x72 Belt Grinder (no weld)-20180127_185555.jpg

    Homemade Aluminum 2x72 Belt Grinder (no weld)-20180127_185607.jpg

    173 Best Homemade Tools eBook

  2. The Following 13 Users Say Thank You to mr95gst For This Useful Post:

    Corm (Nov 26, 2018), Duke_of_URL (Apr 11, 2019), Frontier Forge (Nov 30, 2018), high-side (Nov 25, 2018), Jon (Nov 21, 2018), LMMasterMariner (Nov 22, 2018), marksbug (Nov 22, 2018), olderdan (Nov 22, 2018), PJs (Nov 24, 2018), rlm98253 (Nov 22, 2018), rossbotics (Nov 30, 2018), Scratch (Apr 1, 2021), Seedtick (Nov 22, 2018)

  3. #2
    Supporting Member marksbug's Avatar
    Join Date
    Apr 2016
    Posts
    1,807
    Thanks
    636
    Thanked 349 Times in 281 Posts
    nice work, Ill add they you can usualy go to a auto repair shop and ask for some timing belt tensioner pulleys, they replace them with every timing belt job. they are extreamly high quality,I personaly have never seen any that were wore out...unlike the fan belt tensioners that do crap out. keep up the great work!!!

  4. The Following User Says Thank You to marksbug For This Useful Post:

    Corm (Nov 26, 2018)

  5. #3
    Supporting Member
    Join Date
    Jun 2018
    Posts
    210
    Thanks
    89
    Thanked 577 Times in 96 Posts

    Stevohdee's Tools
    Nice work, had belt grinder on my to do list for a while, got treadmill motor ready, still deciding on 48 or 60 inch belts, gunna try to design machine with quick change contact wheels... Still scribbling plans, thanks for posting

  6. #4
    Content Editor
    Supporting Member
    DIYer's Avatar
    Join Date
    Aug 2013
    Posts
    3,073
    Thanks
    695
    Thanked 1,685 Times in 1,511 Posts


    Thanks mr95gst! We've added your Belt Grinder to our Grinding category,
    as well as to your builder page: mr95gst's Homemade Tools. Your receipt:




  7. #5
    Supporting Member CharlesWaugh's Avatar
    Join Date
    May 2018
    Location
    Boring, OR
    Posts
    251
    Thanks
    34
    Thanked 235 Times in 79 Posts

    CharlesWaugh's Tools
    SPECTANGULAR!

    I have a 3/4HP 90VDC motor and variable controller for it on the shelf.

    Now I know what I want to build with it.
    :-)

    I will make mine so the entire thing tilts over sideways 90 degrees so it acts like a little edge sander - very nice when you can see the curve the small wheel is putting in things.

    I really like your reversible platen/roller assembly. Great idea.

    Marksburg:
    I like the idea of timing belt tensioer pulleys - $20 or les new on Ebay.
    :-)
    Charles Waugh
    www.charleswaugh.com
    "Any tool is just a kit, to be modified as needed for the job at hand"

  8. #6
    Supporting Member
    Join Date
    Aug 2016
    Posts
    586
    Thanks
    1
    Thanked 178 Times in 157 Posts

    wizard69's Tools
    Nice work on the grinder. I've yet to find a scrap yard that will sell to people locally, you appear to have been fairly lucky in that you got some high quality scrap!

  9. #7

    Join Date
    Feb 2019
    Posts
    12
    Thanks
    0
    Thanked 8 Times in 4 Posts

    motopreserve's Tools
    Very nicely done. I’ve got a pile of parts under the bench for an almost identical grinder build. Got sidetracked. Need to get back to it! Thanks for the inspiration!
    Too many projects too slowly...
    Check out the you tube channel.

  10. #8
    Scratch's Avatar
    Join Date
    Nov 2017
    Location
    Hudson, WI
    Posts
    16
    Thanks
    6
    Thanked 59 Times in 14 Posts

    Scratch's Tools
    Nice grinder! How are you controlling the motor? I made one with a treadmill motor too, but now the control board is shot and I need a new way to control the speed.

  11. #9
    Supporting Member mr95gst's Avatar
    Join Date
    Apr 2014
    Location
    Murfreesboro, TN, USA
    Posts
    74
    Thanks
    23
    Thanked 179 Times in 37 Posts

    mr95gst's Tools
    Quote Originally Posted by Scratch View Post
    Nice grinder! How are you controlling the motor? I made one with a treadmill motor too, but now the control board is shot and I need a new way to control the speed.
    I used a KB electronics drive. If I remember right, it is a kbic 125.



    173 Best Homemade Tools eBook

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •