lathe and drill fluids

[oldskool ron]

just wondering what the rest of the world uses for fluids in their lathes an drills ect
I use a mix of 1 part soluble oil , 1 part atf and 10 parts water .works great an the drill n cutting bits stay sharper longer .cheers

 

[mjoekingz28]

What is soluble oil?

Can you name an example?

 

[woody 73]

I had to also look it up.

http://www.ashburnchemical.com/soluble-oils.html

 

[My Old Tools]

I don't care for water around my machine tools. I use cutting oil. I bought a gallon of a 766 Mobil cutting fluid. Works fine and doesn't smell bad. Old fashioned sulphur based cutting oil is available at the big box in the plumbing area usually. It is black and smelly but works well.

For spindle lube I now just use Mobil One in the South Bend (bronze plain bearing), the Sheldon (tapered roller bearing), and the Millrite mill.

 

[ilovevocs]

I have been using Marvel Mystery Oil. Not saying it is the best; just what I use.

Interested to hear feedback from others.

The soluble oil seems is very interesting. I am only a hobby shop so I go through a gallon of marvel a year. The I don't mind the smell.

 

[Roberts210]

If I'm using a corded drill, drilling in thick steel I'll just use good old spit. Works for me.

 

[KenS]

Oatley Dark Thread Cutting Oil. Cheap and available at Lowes and Home Depot.

One caution: Oatley is a sulphurized cutting oil. If you are going to weld the part following cutting, beware that if the part is not cleaned very well, the sulphur can get into the grain structure and reduce the weld performance.

 

[phred]

I've been using oatey as well. Found a stash of full synthic 30wt oil and 90wt gear lube I'm gonna use until I run out.


Sent from my iPhone using Tapatalk

 

[zkling]

Eh, there are different types of oils, lubricating, cutting, and then there is just plain coolant. Motor oil and machine tool oil is not a cutting fluid.

Rigid dark from lowes and the like is good for general drilling.
WD40 works great for aluminum cutting of all types
Tapmatic of a specific variety is great for tapping.

Also depends on what type of system you have setup and are willing to deal with. Flood, mist, squirt bottle, brush?

 

[Banjorear]

I've been using Tap Magic for both tapping and drilling. Seems to work well.

 

[3 Gun Shooter]

It depends on what you're machining. Aluminum machine very well with just baby oil, we used to use this green oil at LLL to machine aluminum. Didn't want to stain/discolor the aluminum so we got this special green oil only for aluminum, We sent it over to be analyzed and found out it was mineral oil with green die.

I use a heavy dark machining oil for steel, stainless, etc. Tap Magic works good.

 

[mjoekingz28]

I don't care for water around my machine tools. I use cutting oil. I bought a gallon of a 766 Mobil cutting fluid. Works fine and doesn't smell bad. Old fashioned sulphur based cutting oil is available at the big box in the plumbing area usually. It is black and smelly but works well.

For spindle lube I now just use Mobil One in the South Bend (bronze plain bearing), the Sheldon (tapered roller bearing), and the Millrite mill.

I assume the water is mixed with the oil to provide cooling. The oil part is for lubrication and leaving a clean cut, ie no burrs or sharp edges.



Maybe straight oil is too viscous to keep the bit and drilling surface cool..

 

[erswill]

For 4 decades I have been using transformer oil

 

[cnc-me]

What is soluble oil?

Can you name an example?

It's oil that dissolves in water, and usually used as a coolant for cutting tools.
It keeps the machinery from rusting as well (some are better at this than others).

Rustlick 50/50, greenish in color before mixing, white after it's mixed with water.

 

[cheechi]

Ace 'thread cutting' fluid probably the same as the lighter Ridgid stuff for general steel cutting.

3 in 1 for Al or real thin/mystery pot metal stuff.

mineral oil sometimes if it's easier to find than either other bottle.

This is all drilling and hand tapping. I don't have a lathe.