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Old 05-09-2017, 02:00 PM
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LW Hiway LW Hiway is offline
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Default The stink is real. Cutting juice for the saw

I have heard bits and pieces of conversations on-line of folks getting away from the use of water added to oil/water soluble cutting oils for mills and metal band saws.

I've tried using this crap since day one of bringing my HF metal band saw home.

Even with the use of Holy Water, give it a few weeks and the shop smells like rancid beef stew. sigh.

What I'd like to know and what I'm hearing is folk like Keith Fenner etc using kerosene in lieu of water as the additive to a cutting oil.

I've not looked at the labeling on my empty gallon container of said oil, but I'm wondering if this water soluble cutting oil would work with Kerosene.

Seems this would spell the end of rust spots from water on the saws table and slide faces.
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Old 05-09-2017, 03:02 PM
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Most people I believe don't use anything, I had my saw all set up for coolant with a pump and plumbing but never hooked it up.
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Old 05-09-2017, 03:18 PM
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Have you tried running without coolant?

On the advice of our resident lube engineer I touched the blade after a long cut and it was barely warm (best to let it stop first)

Just for placebo effect really I let a quick squirt of some cheap cutting/tapping fluid dribble down the near side of the piece being cut, but have never run a wet coolant on my saw.
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  #4  
Old 05-09-2017, 03:25 PM
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I make my paycheck mainly around metalworking fluids. The vast majority
of them are water miscible fluids (aka coolants), with that said. The biggest
issue with coolants is microbial growth, the second is rust.

If you want you coolant to last a long time, i.e. not go rancid.
  1. Circulated you sump for several hours everyday.
  2. Get a skimmer and remove any floating tramp oil.
  3. Purchase a high quality coolant, with good bio-resistance and a good biocide package. Aka expensive.
  4. Maintain your concentration between 7-10% by volume, use a refractometer daily to control you concentration. Many coolants you need a refractometer chart for converting you reading to actual concentration by volume.
  5. Be prepared for the occasion use of biocides to be added tank side, the Kathon series are very effective and also expensive.

Diluting a water soluble coolant with kerosene is fucking stupid, and whoever
suggested it or does it should be fucking bitch slapped. It is akin to adding
water to your engine oil so you engine will run cooler. Fucking idiots should
be hanged until dead and then shot.

Now if you don't want to spend a bunch of money on coolant, hell I can get
really top end shit for free. Save yourself a bunch of headaches and cut your
metal dry. That is assuming you are a hobbyist. If you are production cutting
that is different, the majority of us are hobby types, just cut dry.

If you really feel you need to cut with a lubricant. Get a mist unit and spray a
light mist of lubricant on your parts. These often can be used with light oils,
usually vegetable based esters or a water miscible product. If you use a water
diluted product, dispose of the excess at the end of the day or it can go rancid.

I save all the headaches and cut dry or use some of my special "LemkeLoob",
brushed on as needed, generally for drilling and tapping.

If you want to have the fire hazard and use kerosene, you can just add
a 1/2 - 1 pound of lard to every gallon of kerosene and have a nice cutting
oil. But don't mix a soluble oil with kerosene. Castor bean oil is a good
additive as well.
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Old 05-09-2017, 03:42 PM
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I agree, most of the bandsaw useis dry cut, unless a thick solid then i use an oil squirt can to apply whichever surplus oil is on hand.
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Old 05-09-2017, 07:43 PM
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Another vote for dry.

However, when checking for excess heat, catch the chips coming off the blade
for too hot, adjust speed to suit.

One problem with coolant is chip retention. Unless you flood it on to wash
the blade after it leaves the material, I find coolant keeps the chips dragging
'round all the way back to the material.
Most bandsaws that have coolant have a rotating chip brush to clean the blade.
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Old 05-09-2017, 07:52 PM
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Quote:
Originally Posted by Shade Tree Welder View Post
use some of my special "LemkeLoob",
brushed on as needed, generally for drilling and tapping.
Is that "Beer Based" or just "Beer Flavored".....
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Old 05-09-2017, 07:54 PM
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I have run my bandsaw all day long dry when cutting parts for big jobs. Only problem I have is chip management. When it becomes a problem, I have a mag base that has a copper tube that I connect to the compressor. It takes very little air to keep the chips out of he way and keep the blade cool.
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Old 05-09-2017, 08:42 PM
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Quote:
Originally Posted by digger doug View Post
Is that "Beer Based" or just "Beer Flavored".....
Yeah, you might not want to know what is in it...

Quote:
Originally Posted by Walker View Post
I have run my bandsaw all day long dry when cutting parts for big jobs. Only problem I have is chip management. When it becomes a problem, I have a mag base that has a copper tube that I connect to the compressor. It takes very little air to keep the chips out of he way and keep the blade cool.
Got some pictures? IIRC you have an Ellis?
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  #10  
Old 05-09-2017, 08:58 PM
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Quote:
Originally Posted by digr View Post
Most people I believe don't use anything, I had my saw all set up for coolant with a pump and plumbing but never hooked it up.
I dry cut everything up to 5 inch round. My saw won't hold anything bigger.
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