Dark Screw Cutting Oil in a Flood Coolant System

[Ianagos]

We used to try to cover up the smell with those wintergreen tablets , it then smelled like a rancid Christmas tree ! I do NOT miss that smell at all .

Oh no my coolant doesn’t smell bad it’s just a bit yellow now.

I never like to add anything to the coolant as I think it messes with how it was designed to work. I will say paying more for coolant is worth it.

I’ve used some bad coolants like rustlick products as well as Mobil and do not recommend those they will get nasty quick.

The Mobil curdled and turned to like cheese in a few weeks.

 

[Ianagos]

I see that my system takes 4 gallons.

Ah then just pick up a 5 gallon Pail of oil made for Swiss lathes or something like that. Call your local qualichem distributor they can probably set you up with something and they give out free 5 gallon samples pretty often

 

[erikmannie]

Oh no my coolant doesn’t smell bad it’s just a bit yellow now.

I never like to add anything to the coolant as I think it messes with how it was designed to work. I will say paying more for coolant is worth it.

I’ve used some bad coolants like rustlick products as well as Mobil and do not recommend those they will get nasty quick.

The Mobil curdled and turned to like cheese in a few weeks.

I invite anybody to post a link for a recommended oil or coolant.

Health considerations are at the top of the list & I am also pretty low on funds.

 

[mmcmdl]

lanagos is up to date on this . I am not .

 

[benmychree]

Do not go there! In short order, your lathe would look like sh--, and you would carry that sulfur oil smell wherever you go; dark sulfur based cutting oil is fine for pipe threading machines where slow speeds are the rule and it does not get slung around, but with lathes you can count on getting it on your person, guarenteed.

 

[erikmannie]

I Googled Swiss oils, but there are so many choices that it quickly becomes overwhelming.

I definitely want to use an oil, if only to avoid the CF becoming rancid.

I won’t have any money for about 6 days, but I am hoping to improve on this:

TRIM Cutting & Grinding Fluids OM303/5 Nonchlorinated Cutting and Lubricating Oil, 5 gal Pail: Amazon.com: Industrial & Scientific

TRIM Cutting & Grinding Fluids OM303/5 Nonchlorinated Cutting and Lubricating Oil, 5 gal Pail: Amazon.com: Industrial & Scientific

www.amazon.com

I will probably choose something non-chlorinated because I weld in the shop.

 

[erikmannie]

This stuff is interesting:

TRIM Cutting & Grinding Fluids SC230/5 Oil Rejecting Semisynthetic Fluid, 5 gal Pail: Amazon.com: Industrial & Scientific

TRIM Cutting & Grinding Fluids SC230/5 Oil Rejecting Semisynthetic Fluid, 5 gal Pail: Amazon.com: Industrial & Scientific

www.amazon.com

 

[erikmannie]

These keep coming up in my Google searches, but @lanagos had warnings about Mobil products:

Amazon.com: Mobilmet 426, Cutting Oil, 5 gal : Industrial & Scientific

Buy Mobilmet 426, Cutting Oil, 5 gal: Screw-In Hooks - Amazon.com ✓ FREE DELIVERY possible on eligible purchases

www.amazon.com

Mobil 103323 Mobilmet 766 5gal: Amazon.com: Industrial & Scientific

Mobil 103323 Mobilmet 766 5gal: Amazon.com: Industrial & Scientific

www.amazon.com

What is the argument against running Vactra #2? Too viscous? Not designed to be a CF? The machine would like it!

 

[erikmannie]

I think it is time to take a break from Googling this when I end up here, and seriously considering it:

Amazon.com : Snappy Pure Peanut Oil, 1 Gallon, 4 Pack : Grocery & Gourmet Food

Amazon.com : Snappy Pure Peanut Oil, 1 Gallon, 4 Pack : Grocery & Gourmet Food

www.amazon.com

Benefits: non-sulfurized, non-chlorinated, no health hazards, economical. Risks: may not age so well, unconventional (even laughable) choice, more of a fire hazard.

Seriously, though, the peanut oil is the current front runner.

Peanut oil starts smoking at 446°F.

Palm oil also comes up in my Google searches.

 

[Ianagos]

These keep coming up in my Google searches, but @lanagos had warnings about Mobil products:

Amazon.com: Mobilmet 426, Cutting Oil, 5 gal : Industrial & Scientific

Buy Mobilmet 426, Cutting Oil, 5 gal: Screw-In Hooks - Amazon.com ✓ FREE DELIVERY possible on eligible purchases

www.amazon.com

Mobil 103323 Mobilmet 766 5gal: Amazon.com: Industrial & Scientific

Mobil 103323 Mobilmet 766 5gal: Amazon.com: Industrial & Scientific

www.amazon.com

What is the argument against running Vactra #2? Too viscous? Not designed to be a CF? The machine would like it!

Vactra is not made to be a cutting oil.

I recommend you call qualichem like I mentioned but if not I’ll see if I can post a cutting oil recommendation for you tomorrow. It’s late now and I been working all day.

The Mobil was just their water soluble that I had problems with. The Mobil stuff you listed is not safe for yellow metals ie: your leadscrew nuts and half screw nuts so that’s no good. But other Mobil straight cutting oils may be suitable.