Results 1 to 10 of 40
Like Tree4Likes

Thread: Buffer RPM questions

Hybrid View

heirkb Buffer RPM questions 03-23-2010, 05:37 PM
Del1r1um I use a HF buffer, and I just... 03-23-2010, 05:47 PM
ScottGoodman Go with one rated at... 03-23-2010, 05:48 PM
gssixgun This is going to get... 03-23-2010, 05:54 PM
Del1r1um Oh yeah.. forgot to mention... 03-23-2010, 06:00 PM
Joed +1 on Glen with surface... 03-23-2010, 06:09 PM
gssixgun Horsepower !!! I forgot... 03-23-2010, 07:12 PM
heirkb Are buffers with more... 03-23-2010, 08:07 PM
Maximilian Here's a link... 03-23-2010, 08:16 PM
heirkb Thank you to everyone that... 03-23-2010, 08:20 PM
Lynn 1100-Caswell 3/4 hp... 03-23-2010, 08:26 PM
Maximilian I'm a sucker for Baldor,... 03-23-2010, 08:31 PM
heirkb Does the 3/4 HP concern... 03-23-2010, 08:36 PM
Maximilian The higher HP will only come... 03-23-2010, 09:03 PM
thewatermark I too have been looking for a... 03-23-2010, 09:11 PM
heirkb I think that if I were to get... 03-23-2010, 09:46 PM
gssixgun :) You missed the key word... 03-23-2010, 09:29 PM
Muirtach Just as a note, I have been... 03-23-2010, 09:38 PM
gssixgun Wow I would have never... 03-23-2010, 09:47 PM
mainaman I am new to buffers, I got... 03-23-2010, 10:01 PM
Muirtach I've been using it just like... 03-23-2010, 10:09 PM
Magpie On the Safety related note,... 03-23-2010, 10:25 PM
Lynn I actually like the 3/4 hp... 03-23-2010, 11:52 PM
ScottGoodman I think it's all about... 03-24-2010, 02:44 AM
heirkb Now that I've reread Max's... 03-24-2010, 03:05 AM
ScottGoodman For you guys up north around... 03-24-2010, 03:25 AM
heirkb Woah! Thank you big time on... 03-24-2010, 04:01 AM
Joed I also fine that the lower... 03-24-2010, 02:34 PM
randydance062449 Here is another option for a... 03-24-2010, 02:46 PM
heirkb Thanks Joe. I read through... 03-24-2010, 04:01 PM
Undream The reason I use a variable... 03-25-2010, 12:22 PM
heirkb Thanks for your input Brad.... 03-27-2010, 09:57 PM
mainaman or use bigger wheels if you... 03-28-2010, 12:44 AM
sidmind I have read through this old... 08-31-2011, 03:39 AM
Lynn To me, as Glen says, heat is... 03-23-2010, 08:15 PM
heirkb So if I'm shooting for... 03-23-2010, 06:02 PM
canadajt Ken rupkalvis told me about a... 08-31-2011, 04:09 AM
  1. #1
    Senior Member blabbermouth Joed's Avatar
    Join Date
    Jun 2008
    Location
    Upstate NY
    Posts
    5,003
    Thanked: 1827

    Default

    Quote Originally Posted by heirkb View Post
    Now that I've reread Max's post, it does seem to me that I could get away with a 3450 RPM buffer if I use smaller wheels like 4 inch and 6 inch ones.
    I did the rough calculations for the SMF and it comes out to be, respectively, 3450 smf/min and 5175 smf/min.

    On the other hand, if most of you are using lower RPM buffers with smaller wheels, the SMF you're working at is much lower than 3450 even. It'd be in the 1800 to low two thousands.

    One other question I have is if lower RPMs are better for the final polish as opposed to the earlier stages. Glen already said that he finds that they are, and I inferred it from Lynn's post that he uses lower RPMs for his final polish, but I just wanted to make sure that I'm not just inferring randomly.
    I also fine that the lower SFM gives a better polish. I'm sure that there are other techniques that can give the same results at a higher surface speed. Be sure to check the Caswell link I posted to this thread earlier for the best 'Cut' and 'polish' methods.
    “If you always do what you always did, you will always get what you always got.” (A. Einstein)

  2. The Following User Says Thank You to Joed For This Useful Post:

    heirkb (03-24-2010)

  3. #2
    Hones & Honing randydance062449's Avatar
    Join Date
    May 2005
    Location
    Saint Paul, Minnesota, United States
    Posts
    8,023
    Thanked: 2209
    Blog Entries
    1

    Default

    Here is another option for a variable speed buffer. Takes more work but.....

    http://straightrazorpalace.com/forge...fer-setup.html

    The first pic is what I am referring to.
    Randolph Tuttle, a SRP Mentor for residents of Minnesota & western Wisconsin

  4. #3
    Senior Member heirkb's Avatar
    Join Date
    Oct 2009
    Posts
    553
    Thanked: 243

    Default

    Quote Originally Posted by Joed View Post
    I also fine that the lower SFM gives a better polish. I'm sure that there are other techniques that can give the same results at a higher surface speed. Be sure to check the Caswell link I posted to this thread earlier for the best 'Cut' and 'polish' methods.
    Thanks Joe. I read through that once, but I will make sure to refer back to it a few times so as to retain the info.

  5. #4
    Brad Maggard Undream's Avatar
    Join Date
    Jan 2009
    Location
    Adrian, Michigan
    Posts
    879
    Thanked: 693

    Default

    The reason I use a variable Delta is completely about price. It is the cheapest ~1750rpm motor you can buy, basically (I think I paid $115 for it), and, I do occaisionally dial it up to 3400 for certain things, which is nice.

    I just wanted to clear it up that if money were no object, i wouldn't recommend it. Obviously baldor or caswell would be preferred.

    Also, as Glen has mentioned, the motor gets in the way when using 4" wheels, I have to move my wheel to the other side in order to do the other side of the blade. Pretty big annoyance, costs me a few minutes overall. 3" or 2" wheels are impossible to use on it.

    For 6" & 8" wheels though, it works great, no clearance issues with the motor. 8" wheel @ 1750 is too fast though, IMO. you really need an 1100rpm buffer if you want to use 8" or 10" wheels for greaseless.

    I really like about 2500sf/m for greaseless. I dial up my 4" wheels to about 2400rpm to acheive that speed, and run my 6" wheels at 1750rpm...which yields ~2650sf/m.

  6. The Following 2 Users Say Thank You to Undream For This Useful Post:

    carrolljc (08-02-2014), heirkb (03-27-2010)

  7. #5
    Senior Member heirkb's Avatar
    Join Date
    Oct 2009
    Posts
    553
    Thanked: 243

    Default

    Quote Originally Posted by Undream View Post
    The reason I use a variable Delta is completely about price. It is the cheapest ~1750rpm motor you can buy, basically (I think I paid $115 for it), and, I do occaisionally dial it up to 3400 for certain things, which is nice.

    I just wanted to clear it up that if money were no object, i wouldn't recommend it. Obviously baldor or caswell would be preferred.

    Also, as Glen has mentioned, the motor gets in the way when using 4" wheels, I have to move my wheel to the other side in order to do the other side of the blade. Pretty big annoyance, costs me a few minutes overall. 3" or 2" wheels are impossible to use on it.

    For 6" & 8" wheels though, it works great, no clearance issues with the motor. 8" wheel @ 1750 is too fast though, IMO. you really need an 1100rpm buffer if you want to use 8" or 10" wheels for greaseless.

    I really like about 2500sf/m for greaseless. I dial up my 4" wheels to about 2400rpm to acheive that speed, and run my 6" wheels at 1750rpm...which yields ~2650sf/m.
    Thanks for your input Brad. I'm probably going to go with the Caswell 1100 buffer since it's not that much more than what I've been able to find the Delta at. It's much slower than other wheels, which means I'll have to spend more time on it, I think, but I prefer that to something that's quicker but more likely to cause damage.

  8. #6
    I used Nakayamas for my house mainaman's Avatar
    Join Date
    Aug 2009
    Location
    Des Moines
    Posts
    8,664
    Thanked: 2591
    Blog Entries
    1

    Default

    Quote Originally Posted by heirkb View Post
    Thanks for your input Brad. I'm probably going to go with the Caswell 1100 buffer since it's not that much more than what I've been able to find the Delta at. It's much slower than other wheels, which means I'll have to spend more time on it, I think, but I prefer that to something that's quicker but more likely to cause damage.
    or use bigger wheels if you can fit and feel comfortable with for higher SFM speeds.
    Stefan

  9. The Following User Says Thank You to mainaman For This Useful Post:

    heirkb (03-28-2010)

  10. #7
    Senior Member
    Join Date
    Jul 2011
    Location
    Ponca City, Oklahoma
    Posts
    605
    Thanked: 66

    Default

    I have read through this old post and have a question.

    According to what i read 8000 SF/m is optimal for steel buffing but other than faster work(getting more done faster) does it hurt anything to go REAL slow like 200 RPM using 4 inch buffing wheels? I am not going to do the math but that would be real low SF/m if i were to use greasless compound and go 200 RPM using my mini lathe for safety reasons would it produce bad results or just take forever? Which i dont mind...

    I played around tonight and chucked up a 2" x 1.5" rubber sanding drum in the mini lathe. And had good results tonight cleaning up a razor. I made my own sanding drums, by wrapping them in tape(sticky side out) then wrapping in wet dry paper i went from 120grit to 600grit and due to the very slow speed my paper never tore off. It was in my opinion easier and faster than hand sanding. And almost as safe...for clearence i just reversed the direction and worked on the other side of the drum. As i said it was slow enough i felt safe doing this.

    I had the idea to try out some 2" or 3" or 4" buffing wheels and using greasless compounds chucked up in the mini lathe at 200rpm. I can't think any reason it won't work other than taking forever...
    Pleaee offer up any opinions you have...
    Last edited by sidmind; 08-31-2011 at 04:24 AM.

  11. #8
    aka shooter74743 ScottGoodman's Avatar
    Join Date
    Sep 2009
    Location
    SE Oklahoma/NE Texas
    Posts
    7,285
    Thanked: 1936
    Blog Entries
    4

    Default

    Sidmind,
    Using the low speeds like 200rpm is where the sandpaper will shine. Use it up to at least 2k. You will be amazed how shiny your restored blade looks. Then you can take some rouge to a fresh wheel and finish it off to a nice and mirrored polish.
    Bruno and spazola like this.
    Southeastern Oklahoma/Northeastern Texas helper. Please don't hesitate to contact me.
    Thank you and God Bless, Scott

Posting Permissions

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