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[Jhon P]

I finally got around to draining the 24" saw yesterday. Almost 15 gallons in that old beast. I stirred up up good to get the sludge suspended. I have four bucket filtering and 3/4 of a bucket full still to filter.

[Jhon P]

Who was it that put the dirty oil in a bucket with water and stirred it than sat it outside when it is good and cold, after it freezes they poured the oil off. One time I took the sludge after I filtered it and put it in a plastic crate with water and stirred it good and let it set for a week. The oil floated to the top and I scooped it off. I didn't get enough oil to make it worth the effort. I guess it filtered most of it out.

[Allen]

I have a 14" Lortone, run each afternoon for a hour or two so a fair bit of sludge.

My filters are brown paper lunch bags, nice and cheap.

To help the process my cutting oil consists of about 25% old automotive gear box oil.

The gear box oil has additives that help settle sludge to the bottom allowing easier removal and waste.

A further advantage is the old oil come free from a friends workshop.

[kent]

Grayco,

I've posted this before but perhaps you would be curious about it. http://www.hplapidary.com/en/highland-park-everclean-integrated-oil-cleaning-for-mounting-on-machine

Its pricey for sure. Hard to beat paper bags and patience though....

Kent

[Grayco]

Grayco,

I've posted this before but perhaps you would be curious about it. http://www.hplapidary.com/en/highland-park-everclean-integrated-oil-cleaning-for-mounting-on-machine

Its pricey for sure. Hard to beat paper bags and patience though....

Kent

Yes, it is expensive. $850  I could get a lot of paper bags for that    My saw is a homemade 20" saw. It is well designed and would require a couple gallons of oil to keep the blade wet.

My thought is to pump the oil to the blade and maybe reduce the required amount of oil to about a gallon.  My one concern with that is heat build up.  I'm guessing if you don't have enough oil, the heat cannot dissipate and the result will be shorter blade life and misting.
Any thoughts on this?

[kent]

The less oil you have the quicker it will contaminate. I don't think the heat factor would be an issue until the oil is contaminated. Then of course your throwing much more grit at your cut which would cause more friction and a rougher cut.

[robirdman]

A big funnel lined with newspaper worked well for me.

[lapidaryrough]

I just put all the oil and sludge into a five gallon bucket and let it set.....Than as time goes buy I pull the oil off the top,till there isn't anymore....Usually a gallon or so,that's $25.00 right there.....
Than I dig a hole and bury the sludge......

   Mike  Is your yard a landfill?!  Put a lid on that five gallon bucket MIKE,   and you may use my garbage can.

   
Jack 

[Redrummd]

I just put all the oil and sludge into a five gallon bucket and let it set.....Than as time goes buy I pull the oil off the top,till there isn't anymore....Usually a gallon or so,that's $25.00 right there.....
Than I dig a hole and bury the sludge......

Sludge is an environmental contaminate for decades.  Bag it and send it to a properly lined dump site.