what is cutting oil?
I assume it’s different from your basic 3 – 1 oil.
I have seen people use oil to keep down the heat when drilling holes in aluminum etc, and need to do some cutting and drilling without eating the bits.
TIA,
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Why have you? 😆
wd40 is great on aluminum – got that from a local machinist.
for aluminum kerosine is used for a coolint , smells bad though ,
i use wd40 some times . usually for regular metals a water soluble oil is good , i use alchohol some time for small jobs ,since it dries quick and is clean and clear .
( no coments on me catching on fire please : )
so it’s used mostly for harder metals like stainless?
I just (re)discovered that my drill press had an adjustable belt to slow or speed the drill bit which helps a lot with the heat. I’m trying to remember all the metal working stuff I never bothered to learn watching my father (he and my grandfather were both machinist)
On all steels, though if you’re taking off a skin of a cut and want to see the finish as it happens you probably wouldn’t need it. It’s about the life of the tool too, so that’s always a consideration.
I’ve been taking 3mm cuts on alu and seen smoke coming off, so it’s getting pretty hot there too. I squirt the suds on by hand since my pump broke (and it puts out too much anyway), just a dab’ll do ya! 😆
so it’s used mostly for harder metals like stainless?
I just (re)discovered that my drill press had an adjustable belt to slow or speed the drill bit which helps a lot with the heat. I’m trying to remember all the metal working stuff I never bothered to learn watching my father (he and my grandfather were both machinist)
It’s commonly known as ‘suds’, and usually comes as a concentrate (5-litre bottles here in the UK), mineral or vegetable-based oil. It turns white when you mix it with water.
You don’t really need it for alu and brass, though I use it on alu sometimes because it reduces the noise and seems to give a nicer finish (where required).
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haha . nope never been on fire .
i just hate when i say something like ” use wd40″” then people think it’s like arisol sprays over a lighter . when its not . in fact wd40 will not burn unless atomized , as a liquid it very hard to light up . but that didnt stop people frm saying id catch on fire before .