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Thread: 20" disc sander

  1. #1
    Join Date
    Jul 2009
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    Central PA
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    638

    20" disc sander

    I decided that I wanted a 20" disc sander... so I built one.Click image for larger version. 

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  2. #2
    Join Date
    Dec 2006
    Location
    RETIRED(!) in Austintown, Ohio
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    5,322
    Looks great! Nice touches on the paint job, too.

    What's the horsepower on the motor?
    Jim D.
    Adapt, Improvise, Overcome!

  3. #3
    Join Date
    Oct 2006
    Location
    ABQ NM
    Posts
    30,020
    Awesome! Is the table cast iron or steel? Either way, that looks like a beast.
    When the going gets weird, the weird turn pro. - Hunter S. Thompson
    When the weird get going, they start their own forum. - Vaughn McMillan

    workingwoods.com

  4. #4
    Join Date
    Mar 2007
    Location
    Escondido, CA
    Posts
    5,173
    Wowza! Makes my little 10" shopmade disk sander look silly! What rpm does the motor turn? Got any idea what the rim speed is? Careful of the fingers. You could get a really awful manicure with that thing!
    ++++++

    Some say the land of milk and honey; others say the land of fruits and nuts. All together my sort of heaven.

    Power is not taken. It is given. Who have you given yours to? Hmmmm?

    Carol Reed

  5. #5
    Join Date
    Jul 2009
    Location
    Central PA
    Posts
    638
    Thanks, I decided sometime back that if I was going to all the work of making tools I should make them look decent. The first thing I built was an 80" edge belt sander, it works fine but looks terrible.
    The disc sander has a 1725 rpm 1 HP motor, I was worried that it might not be big enough but I checked the amperage and its fine unless I am really abusing it. If theres decent paper in I see no instance where the motor would be overloaded. I made this from scrap, the only things I bought for it were the sanding disc and the aluminum for the backing disc. The rim speed is 106MPH if I remember my calculations correctly, so yes you could give speedy manicures if not careful.

  6. #6
    Join Date
    Jul 2011
    Location
    The Gorge Area, Oregon
    Posts
    4,699
    Wow nice build! You don't mess around. The over arm switch is pretty sweet looking!

  7. #7
    Join Date
    Jul 2009
    Location
    Amherst, New Hampshire
    Posts
    10,604
    That's amazing. Nice job
    Faith, Hope & Charity

  8. #8
    Join Date
    Jun 2007
    Location
    Oceanside, So. Calif. 5 mi. to the ocean
    Posts
    4,944
    I am impressed and JEALOUS.

    My dad had an 8 1/2" home made disk sander that I used a lot. I used it mainly to erase my mistakes---You know, to sand the end of the board down a bit to make it really the right length and square.
    I was really happy when I stepped up to a 12" sander. However, a 20" must be pretty much like a trip to Heaven. WOW!!!

    Enjoy (and think of me when you use it),
    Jim B
    First of all you have to be smarter than the machine.
    VOTING MEMBER

  9. #9
    Join Date
    Jul 2009
    Location
    Central PA
    Posts
    638
    Quote Originally Posted by Vaughn McMillan View Post
    Awesome! Is the table cast iron or steel? Either way, that looks like a beast.
    Its steel, I was going to use an old atlas table saw top as the table for this but after I fitted it I realized that it was way to deep to comfortably use so I used a piece of 1/4" plate.

  10. #10
    Join Date
    Feb 2008
    Location
    East Freeetown, Massachusetts
    Posts
    3,022
    Quote Originally Posted by Dave Black View Post
    Thanks, I decided sometime back that if I was going to all the work of making tools I should make them look decent.
    I am with you there.

    Just because it's in the shop or it's a tool is no reason to stop short of finishing the job.

    Look GREAT.

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