Disc Grinder or Belt Grinder? - Page 2
Close
Login to Your Account
Page 2 of 2 FirstFirst 12
Results 21 to 38 of 38
  1. #21
    Join Date
    Oct 2006
    Location
    Petaluma CA 94952
    Posts
    454
    Post Thanks / Like
    Likes (Given)
    0
    Likes (Received)
    67

    Default

    Made this 12 x 80 sander about 25 years ago from parts salvaged from a grainer. 3hp three ph motor 3750 rpm never stalled it yet. Belts last 3-5 years unless used by a novice. Very loud. I have 5 other belt sanders with different setups but if I had to choose a sander, bigger is better
    Attached Thumbnails Attached Thumbnails img_4963.jpg  

  2. Likes Mud, michiganbuck liked this post
  3. #22
    Join Date
    Mar 2005
    Location
    Posts
    9
    Post Thanks / Like
    Likes (Given)
    0
    Likes (Received)
    0

    Default

    Quote Originally Posted by true temper View Post
    Belt for sure, pay the extra to get one with a VFD controller on it. It only hurts once, you will thank me later.
    Bought my 760 used years ago best money I've spent. If was looking for another I would definitely opt for a VFD version.

  4. #23
    Join Date
    Apr 2005
    Location
    Beaverdam, Virginia
    Posts
    6,746
    Post Thanks / Like
    Likes (Given)
    466
    Likes (Received)
    3022

    Default

    I have had a belt/disc combo and I can't remember the last time I used the disc.

  5. Likes Greg White liked this post
  6. #24
    Join Date
    Jul 2004
    Location
    N. GA- 33.992N , -83.72W usa
    Posts
    3,746
    Post Thanks / Like
    Likes (Given)
    60
    Likes (Received)
    857

    Default

    never liked disk. they like to eat fingernails for lunch. happy w/ an old 6x48" rockwell
    and a 4x106" somaca wet/dry .

  7. #25
    Join Date
    Jun 2007
    Location
    Vancouver Island, B.C. Canada
    Posts
    1,703
    Post Thanks / Like
    Likes (Given)
    44
    Likes (Received)
    172

    Default

    I too have a 4 x 106 Somaca wet sander, they are usually set up for glass grinding and they turn too slowly for metal.
    I sped mine up and it is loud but cuts well. We use it every day multiple times. My only complaint is the grit that remains in the box after the water has drained tends to dry as hard as...well steel! I have to use my air chisel to knock the stuff off and scrape out the box.
    However the water keeps the dust down and that is a huge plus, also it cools the workpiece which is a bonus.
    Also the original motor for glass grinding was too small so we upped it to a 3 phase 3 hp which does the job well, tons of power, can't slow it down.

    I also have two, 2" x 48' rockwell belt grinders, these are on one end of a dual grinder with a 6" wheel on the other end.
    Both get used but the Somaca gets used more often because of the low dust factor and the extra power.

  8. #26
    Join Date
    Nov 2007
    Location
    marysville ohio
    Posts
    9,018
    Post Thanks / Like
    Likes (Given)
    2565
    Likes (Received)
    5975

    Default

    Both, I have a 24" disc 5HP 3ph with a vfd. Shop built, the table goes around the disc, has fwd/rev so you can use both sides of the table with the sparks going down. Klingspor discs. It will turn a 4x4 into saw dust as fast as you can feed it, it's an animal! I don't know how anyone can use a 12" or smaller disc, worthless in my opinion although I used to like a 12" before I built my big one. I also have a 4x48 belt and my favorite, a 2x72 Square wheel sander.

  9. #27
    Join Date
    Nov 2007
    Location
    WV
    Posts
    281
    Post Thanks / Like
    Likes (Given)
    52
    Likes (Received)
    112

    Default

    Call Burr King and have a rep bring a 760 to your shop. They will set it up with a couple of different contact wheels and you can decide for yourself. As they say "One test is worth a thousand opinions". You can also put scotchbrite wheels on a Burr King, something a disk sander can't offer. If you have never run parts on a rubber contact wheel, you don't know what you are missing.
    +1 on the above suggestions for the variable speed. It's some extra coin, but it greatly expands the possibilities of the machine.
    You mentioned your small shop, I have 380 square feet, how about you?

  10. #28
    Join Date
    Dec 2018
    Country
    UNITED STATES
    State/Province
    Arizona
    Posts
    2
    Post Thanks / Like
    Likes (Given)
    1
    Likes (Received)
    0

    Default

    After reading this topic, may just have to keep/try the 12" disc I recently acquired cheap. Never was a fan of disc, but never had a 12 before.

  11. #29
    Join Date
    Mar 2015
    Country
    UNITED STATES
    State/Province
    Florida
    Posts
    420
    Post Thanks / Like
    Likes (Given)
    691
    Likes (Received)
    251

    Default

    Quote Originally Posted by M. Moore View Post
    I too have a 4 x 106 Somaca wet sander, they are usually set up for glass grinding and they turn too slowly for metal.
    I sped mine up and it is loud but cuts well. We use it every day multiple times. My only complaint is the grit that remains in the box after the water has drained tends to dry as hard as...well steel! I have to use my air chisel to knock the stuff off and scrape out the box.
    However the water keeps the dust down and that is a huge plus, also it cools the workpiece which is a bonus.
    Also the original motor for glass grinding was too small so we upped it to a 3 phase 3 hp which does the job well, tons of power, can't slow it down.

    I also have two, 2" x 48' rockwell belt grinders, these are on one end of a dual grinder with a 6" wheel on the other end.
    Both get used but the Somaca gets used more often because of the low dust factor and the extra power.
    Interesting. I have not used a wet belt before. Did you use it wet after you sped it up? I am looking at doing some everyday grinding of carbon fiber so speed is your friend.
    Gary

  12. #30
    Join Date
    Jun 2007
    Location
    Vancouver Island, B.C. Canada
    Posts
    1,703
    Post Thanks / Like
    Likes (Given)
    44
    Likes (Received)
    172

    Default

    Cycle,
    I sped up the machine to the correct SFM for steel grinding. I never use it without the water.
    It does splash off the tool rest a bit but not too bad, it was hard to regulate the water flow to be just right so I put the water pump on a foot switch. The problem is you want a lot of water to wet the belt and a smaller amount to maintain.

    Michael

  13. Likes Cycle1000 liked this post
  14. #31
    Join Date
    Mar 2015
    Country
    UNITED STATES
    State/Province
    Florida
    Posts
    420
    Post Thanks / Like
    Likes (Given)
    691
    Likes (Received)
    251

    Default

    Thanks, I swear I did a search for wet belt sanders a few months back and got zip.
    But after searching for the Somaca and finding it, they are everywhere
    If I could fuss with one and make it work it would be so much better that my current setup
    Gary

  15. #32
    Join Date
    Jun 2007
    Location
    Vancouver Island, B.C. Canada
    Posts
    1,703
    Post Thanks / Like
    Likes (Given)
    44
    Likes (Received)
    172

    Default

    Gary, it might work fine at the factory speed. The Somaca does not come with a pump, it is a line supply and drain system, not sure why. Maybe the glass particles going back in the water to the belt is bad?
    I just added a bucket and pump.

  16. Likes Cycle1000 liked this post
  17. #33
    Join Date
    May 2007
    Country
    UNITED STATES
    State/Province
    Texas
    Posts
    2,418
    Post Thanks / Like
    Likes (Given)
    2946
    Likes (Received)
    453

    Default

    I would go belt also. It is tough when limited space is a big issue because disc is also handy yet belts are more so.

  18. #34
    Join Date
    May 2007
    Country
    UNITED STATES
    State/Province
    Texas
    Posts
    2,418
    Post Thanks / Like
    Likes (Given)
    2946
    Likes (Received)
    453

    Default

    Yep belt grinder for sure a three wheel one.

  19. #35
    Join Date
    Oct 2005
    Country
    UNITED STATES
    State/Province
    Pennsylvania
    Posts
    13,505
    Post Thanks / Like

    Default

    Quote Originally Posted by Dedave View Post
    After reading this topic, may just have to keep/try the 12" disc I recently acquired cheap. Never was a fan of disc, but never had a 12 before.
    I'm sure your 3-in-1 machine will spin that 12" disc just fine......
    Nooby, Nooby Doo, Shop Task 3 in 1 questions

  20. #36
    Join Date
    Aug 2005
    Location
    CT
    Posts
    7,663
    Post Thanks / Like
    Likes (Given)
    295
    Likes (Received)
    1791

    Default

    Resurrecting this thread as it came up just at the right time.

    Until now, I got by with a plane-jane cheapo 1 x 42 Wilton. Clean up sawed edges of bars or slugs before they go into a vise or chuck, remove bigger burrs from milling ops
    before the next op and that sort of things...
    It works OK, but that's about it. Just OK.

    Now however I have a larger order of fabrication type parts to make out of DOM tube.
    Saw cut, then a bunch of milling, then weld preps for fit-ups, then weld, then finally make the welds cosmetic.

    Needless to say that the Wilton ( and it's ilk ) type of sander ain't gonna cut it for that purpose.
    This job is substantial enough to justify a good belt grinder.
    I'll be using it to clean up the cold sawn ends first, then round all the sharp edges from milling and grind in the weld preps.
    After welding, I'll be smoothing the welds, clean up the overburns from the thinner material surfaces, and finally prep the whole assembly for semigloss powder coating.
    For reference, material is 2" and 1 3/4" OD, .094 and .063 wall DOM tube and 10Ga or 18Ga cold rolled sheet.( along with the just about everything else, TI, NI, SS, AL for general deburring )

    So, I was thinking about the very same Burr King 760 as the OP, specifically the 78110 model that is 2HP, 220V/single phase with VFD.

    Question:
    Should that model be sufficient for my needs?
    How/why is the VFD beneficial? ( I do not mind overkill, so just asking )
    What would be the best size belts to get? Should I go the full 2" width or narrower is better for flexibility in inside corners?
    What type of abrasive should I get? Now I'm using the blue Norzon Bluefires and they're pretty good ( even on the mediocre sander ) but is there a better, longer lasting type?

    Again, I am not a fab shop nor am I planning to be, but this job will need something that makes our life much easier.

    Thank You

  21. Likes Cycle1000 liked this post
  22. #37
    Join Date
    Oct 2010
    Country
    UNITED STATES
    State/Province
    Oregon
    Posts
    4,871
    Post Thanks / Like
    Likes (Given)
    3870
    Likes (Received)
    1750

    Default

    Different strokes for different folks, but I would not be happy with anything narrower than a 6" belt and a platen to back it up. Not saying that's what everybody needs.

  23. #38
    Join Date
    Aug 2007
    Location
    Mountain View, CA
    Posts
    79
    Post Thanks / Like
    Likes (Given)
    1
    Likes (Received)
    8

    Default

    Quote Originally Posted by Ries View Post
    I have had a belt/disc combination in my shop for 35 or 40 years. And I use the belt at most 5% of the time.

    Could be that the disc is better for your particular use mode, but I wonder if it's simply because of insufficient belt SFM.


Tags for this Thread

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
  •