Results 1 to 14 of 14

Thread: Whats a good cutting oil?

  1. #1
    Aluminum Newmetalmark's Avatar
    Join Date
    Sep 2011
    City
    Milton
    State
    Connecticut
    Country
    United States
    Posts
    57
    Tickets
    0
    Post Thanks / Like
    Chats
    0
    Total Downloaded
    0
    My Feedback

    (0% Positive Feedback)

    Whats a good cutting oil?

    Being a noob to machining and metal working in general, I'd like to ask what a good general purpose cutting oil would be. I was given a gallon of oil in an unmarked bottle when I bought my Atlas lathe(I think the p.o. "liberated" it from bulk from his work). It was a little dark and smelled like the oil I've used to thread pipe. There are a lot of choices out there- tapping, cutting, grinding, water soluble, lite, dark, has sulpher& chlorine, doesn't have it, rancidity safe...... And then theres those who say to use bacon grease, lard, kerosene and wax or other home brews.
    I want to keep it simple, I use mostly mild steel, aluminum and brass for my projects so I'd like to get something that works for all, doesn't stain and cleans off easy, works right out of the can. Is there such a beast? I've heard that the Mobil products are good, anybody here use them?
    Catch it, grow it or make it!

  2. #2
    Bronze randyjaco's Avatar
    Join Date
    Oct 2010
    City
    Friendswood
    State
    Texas
    Country
    United States
    Posts
    448
    Tickets
    0
    Post Thanks / Like
    Chats
    0
    Total Downloaded
    7.98 MB
    My Feedback

    (0% Positive Feedback)

    Re: Whats a good cutting oil?

    My favorite is a mix of kerosene and lard, but if you want something out of the bottle dark sulfur cutting oil will do the job. You ought to be able to get it at the hardware store or a plumbing supply place.

    Randy

  3. #3
    Tool Steel Hawkeye's Avatar
    Join Date
    Jun 2011
    City
    Kelowna
    State
    British Columbia
    Country
    Canada
    Posts
    1,493
    Tickets
    0
    Post Thanks / Like
    Chats
    0
    Total Downloaded
    0
    My Feedback

    (0% Positive Feedback)

    Re: Whats a good cutting oil?

    Since you already have a good supply of what may be the plumbing version, why not try it and see what kind of finish you get. If it ain't bust, don't fix it.
    Mike

    Victoria U2 Mill w/ Vertical Head
    ZX25 Mill/Drill
    X2 CNC Mill
    Storebro Bruk Ornmaskiner 14 x 40 Lathe
    Hercus AR Lathe
    Louis 10" Shaper
    9 x 12 Horizontal Bandsaw
    Hobart Handler 140 MIG
    TIG / Plasma Cutter

  4. #4
    Cast Iron Kennyd's Avatar
    Join Date
    May 2011
    City
    Westminster
    State
    Maryland
    Country
    United States
    Posts
    531
    Tickets
    0
    Post Thanks / Like
    Chats
    0
    Total Downloaded
    0
    My Feedback

    (0% Positive Feedback)

    Re: Whats a good cutting oil?

    For steel I use Rigid Dark Cutting Oil from Home depot in the plumbing section. Comes in quart size bottles and is pretty cheap. I use WD40 for AL.
    More Projects in my Picasa Album: https://picasaweb.google.com/kdeckster/

  5. #5
    Aluminum Newmetalmark's Avatar
    Join Date
    Sep 2011
    City
    Milton
    State
    Connecticut
    Country
    United States
    Posts
    57
    Tickets
    0
    Post Thanks / Like
    Chats
    0
    Total Downloaded
    0
    My Feedback

    (0% Positive Feedback)

    Re: Whats a good cutting oil?

    Quote Originally Posted by Hawkeye View Post
    Since you already have a good supply of what may be the plumbing version, why not try it and see what kind of finish you get. If it ain't bust, don't fix it.
    Uh,well, I sort of knocked it over and spilled most of what was left on the floor, made quite the spot on the floor 'cause I didn't find it for a few days.
    Catch it, grow it or make it!

  6. #6
    Cast Iron churchjw's Avatar
    Join Date
    Oct 2011
    City
    Boone
    State
    North Carolina
    Country
    United States
    Posts
    624
    Tickets
    0
    Post Thanks / Like
    Chats
    0
    Total Downloaded
    0
    My Feedback

    (0% Positive Feedback)

    Re: Whats a good cutting oil?

    I use Cool tool on my mill and lathe. Its a water mix used with compressed air. Does a great job cooling and a gal of the concentrate last for a year or more. I mix it up in 1 gal batches and add a bit of bleach to it to keep mold from growing during storage. If you get the air/fluid mix right it keeps everything nice and chilled and evaporates at the point of cutting so there is very little of the fluid left on the machine after. Also since I am in my basement it has almost no smell (just a slight bleach about what you get from laundry) or smoke just a little water vapor steam. I always do a quick wipe down with way oil after to make sure no rust. For taping I use tap magic. For cut off and threading on the lathe I use a heavy sulfur based oil.

    Jeff

  7. #7
    Chips
    Join Date
    Nov 2011
    City
    Rochester
    State
    New York
    Country
    United States
    Posts
    12
    Tickets
    0
    Post Thanks / Like
    Chats
    0
    Total Downloaded
    0
    My Feedback

    (0% Positive Feedback)

    Re: Whats a good cutting oil?

    I use either motor oil, 3 in 1 oil or WD40 for most of my work-which is usually not heavy cutting or at high speeds. The WD40 is easier to clean up - the motor oil sticks better. Clearly there are better fluids but these serve my hobby needs sufficiently.

  8. #8
    Bronze randyjaco's Avatar
    Join Date
    Oct 2010
    City
    Friendswood
    State
    Texas
    Country
    United States
    Posts
    448
    Tickets
    0
    Post Thanks / Like
    Chats
    0
    Total Downloaded
    7.98 MB
    My Feedback

    (0% Positive Feedback)

    Re: Whats a good cutting oil?

    Ed
    What is dark sulphurized oil recommended for? And who is making this recommendation?

    Randy

  9. #9
    Administrator Tony Wells's Avatar
    Join Date
    Jan 2011
    City
    Tyler
    State
    Texas
    Posts
    5,660
    Tickets
    0
    Post Thanks / Like
    Chats
    57
    Total Downloaded
    0
    My Feedback

    (0% Positive Feedback)

    Re: Whats a good cutting oil?

    Curious as to what particular oil you have that recommends against ferrous use, Ed. What I generally use as the dark sulfur oil says good for ferrous. I can't remember the brand I have, but it seems like the name starts with an R.

    It will stain copper and brass alloys though. I mix a little Tap Magic in when I am cutting a very fine thread, unless I use straight Tap Magic.

    Coolant is another story, but I keep a anti-spill Dykem container with an acid brush in it full of oil on the lathes.
    "A man who works with his hands is a laborer. A man who works with his hands and his brain is a craftsman. A man who works with his hands, his brain and his heart is an artist."

    -Louis Nizer

  10. #10
    Administrator Tony Wells's Avatar
    Join Date
    Jan 2011
    City
    Tyler
    State
    Texas
    Posts
    5,660
    Tickets
    0
    Post Thanks / Like
    Chats
    57
    Total Downloaded
    0
    My Feedback

    (0% Positive Feedback)

    Re: Whats a good cutting oil?

    Relton it is. My mind kept going to Rigid, since they build threaders, but I know that wasn't what I'd bought.
    "A man who works with his hands is a laborer. A man who works with his hands and his brain is a craftsman. A man who works with his hands, his brain and his heart is an artist."

    -Louis Nizer

  11. #11
    Plastic
    Join Date
    Oct 2010
    State
    Florida
    Country
    United States
    Posts
    31
    Tickets
    0
    Post Thanks / Like
    Chats
    0
    Total Downloaded
    0
    My Feedback

    (0% Positive Feedback)

    Re: Whats a good cutting oil?

    I just use what ever is handy and for me this seems to work. I am now using a mix of Tiki Torch oil (appers to be just deorderized kerosene), Marvel Mystery Oil & Trans Fluid. Made it up thin enough to use in a sray bottle and works for me on the lathe & drill press. All these oils were aquired for free or for penneys at yard sales.

    With the gallon of Tiki Oil, Marvel Mystery Oil (smells nice) and Trans Fluid for .25 cents a qt. at yards sale I have enough to last for years. I am sure there is better but for the light duty work I do on my 1937 Craftsman 12" this works fine.

  12. #12
    Administrator Tony Wells's Avatar
    Join Date
    Jan 2011
    City
    Tyler
    State
    Texas
    Posts
    5,660
    Tickets
    0
    Post Thanks / Like
    Chats
    57
    Total Downloaded
    0
    My Feedback

    (0% Positive Feedback)

    Re: Whats a good cutting oil?

    While we're on the subject, don't use Moly-D on copper alloys. Definitely stains. Great for stainless varieties, but never for brass or copper.
    "A man who works with his hands is a laborer. A man who works with his hands and his brain is a craftsman. A man who works with his hands, his brain and his heart is an artist."

    -Louis Nizer

  13. #13
    Bronze randyjaco's Avatar
    Join Date
    Oct 2010
    City
    Friendswood
    State
    Texas
    Country
    United States
    Posts
    448
    Tickets
    0
    Post Thanks / Like
    Chats
    0
    Total Downloaded
    7.98 MB
    My Feedback

    (0% Positive Feedback)

    Re: Whats a good cutting oil?

    I just scored a case of Marvel Mystery oil for free. It looks like MMO will now be my go to cutting oil for a while 8^)
    And I just dropped $27 on five gallons of kerosene 8^(

    Randy

  14. #14
    Aluminum Video_man's Avatar
    Join Date
    Nov 2011
    City
    Miami
    State
    Florida
    Country
    United States
    Posts
    87
    Tickets
    0
    Post Thanks / Like
    Chats
    0
    Total Downloaded
    0
    My Feedback

    (0% Positive Feedback)

    Re: Whats a good cutting oil?

    I've been playing with century-old ideas, like lard oil. Not used much today as a primary component because of cost and, if used in a circulating system, bacteria problems, but by hand application it works pretty good. I bought 5 lbs. at the grocery store, heated to melting, and let the components separate, which they do when cooled to room temperature. The white stuff that floats to the top is stearic acid, which afaik is not useful for anything, and the rest is a yellowish oil (oelic acid, I think) which is what you want. Just from my experiments: Mixed with mineral spirits, 1 part to 2 parts oil, great for steel. Mixed with turpentine in the same ratio, the best brass, copper, and aluminum bronze I've ever turned. Mixed with trichloroethane (hard to get, don't ask!) it does wonders on aluminum. Mixed into melted beeswax, a good tapping and reaming compound.

    Probably more trouble than it's worth, but I was just curious; maybe those old guys back-when knew a thing or two.... I do ordinarily use a semi-synthetic diluted with water, which cools better, of course. I have circulating systems on my mill and lathe but they make a huge mess and I just use a squirt bottle. In the bandsaw I use Astro-Saw; it doesn't leave oily stuff to mess up welding, but it does eat the paint on my saw...

Similar Threads

  1. Whats up with this?
    By pburns in forum QUESTIONS & ANSWERS -- GET HELP FAST HERE!
    Replies: 10
    Last Post: 01-03-13, 05:46 PM
  2. Replies: 6
    Last Post: 06-30-12, 07:31 AM
  3. Whats the difference?
    By Rbeckett in forum THE MEMBERS' HANGOUT (OFF-TOPIC discussions)
    Replies: 8
    Last Post: 06-23-12, 06:54 AM

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
  •