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Techniques for CollectorsHow much oil ?

26th Mar 2008 19:16 UTCRoger T.

I have just bought a 10' self feeding slab saw. I want to know how much cutting oil do i need in the sump. Dieing to start cutting my large pieces to work into jewelry. Roger T.

27th Mar 2008 05:37 UTCJohn Truax

Hi Roger

Just fill the sump up to the blade then around 1/8 inch more. Run the saw for a bit, until the table is full of oil and draining back ... you may have to add a little splash more. Too much oil is a misty mess! Have fun cutting!

J T

27th Mar 2008 07:31 UTCRay Hill Expert

I actually advise people against the use of oil in saw blades because over an extended sawing session, quite a bit of airborne oil particles end up in the lungs and could theoretically contribute to an oil embolism in the blood, since the aerosol is so fine adn can pass through the walls of the alveoli and directly into the blood. I prefer any coolant that has a known low toxicity. The type that ends up looking like a milky solution is, in my opinion, better at cooling the blade , and lubricating it...than straight oil.

25th Feb 2009 15:47 UTCFrédéric Messier Leroux

What kind of coolant would you recommend for use in a 14''slab saw(lss panther,By lortone)with a fast fixed feed rate(15 inches per hour)?They say that the use of any other coolant than oil will damage the blade.Is it true that hydraulic transmission fluid works well?An experienced lapidarist told me that,unlike regular cutting oil,it does not emit airborne particles.Please help,as I am concerned about the hazards of breathing oil fumes.

26th Feb 2009 03:39 UTCJohn Truax

I have switched to straight mineral oil, it is non-toxic, odor free it is edible and sold as a laxative at the drug store.

Still wouldn't want to breath the mineral oil mist at all. I hope your saw has a hood or you are using it outdoors.

I'm sure someone has been sickened using tranny fluid, as were some who used anti freeze, #2 etc... any of them

will get you very sick.

J T

26th Feb 2009 20:14 UTCFrédéric Messier Leroux

John,many thanks for your info.My saw has a hood,but every time I open it after a cut,a fume comes out.I try not to breathe it and I open the door to enter fresh air in the appartment.If I wait 5 minutes before opening the hood,could it help?

27th Feb 2009 02:40 UTCJim Bean 🌟

Waiting helps. I usually give it a few minutes at least, by five minutes the mist will have settled down quite well. (10" Raytech)

28th Feb 2009 09:00 UTCRay Hill Expert

Your wife wont love you, but doing it under the range hood, helps to remove the vapourous fumes quickly..but this assumes a relatively small saw that could actually sit on top of the stove.

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