Reamer lubricant, water- or oil-based?

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Mark Nunn
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Reamer lubricant, water- or oil-based?

Post by Mark Nunn » Tue Feb 13, 2024 9:39 am

I have always used oil-based when reaming. I'm reaming valve guides and decided to try water based. The company I work for uses water based in our cutting machinery. I'm not happy with progress so far. I ruined my reamer when I hit a hard spot in the casting. Before I finish. What do you all prefer and why?
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TXGOAT2
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Re: Reamer lubricant, water- or oil-based?

Post by TXGOAT2 » Tue Feb 13, 2024 10:13 am

Old-fashioned oil-based thread cutting oil ought to work.
If you hit a sand inclusion in the block, it wouldn't matter much what lubricant you used.
I'd guess water-base lubricants are meant for modern, insert-type cutting tools. Tool steel cutters probably work best with an oil base lube.
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Dan McEachern
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Re: Reamer lubricant, water- or oil-based?

Post by Dan McEachern » Tue Feb 13, 2024 2:15 pm

Cast iron= dry.
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Art M
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Re: Reamer lubricant, water- or oil-based?

Post by Art M » Tue Feb 13, 2024 5:37 pm

Three years ago I reamer the valve guides dry and had no problem. Definitely don't use motor oil. It's important to control the reamer alignment.

Art Mirtes
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jiminbartow
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Re: Reamer lubricant, water- or oil-based?

Post by jiminbartow » Tue Feb 13, 2024 5:52 pm

Our machinist used water soluble oil. Oil that would mix with water. It would circulate through the machine and pass through a strainer. It went much farther and was just as good as regular lubricating oil.
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Mark Nunn
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Re: Reamer lubricant, water- or oil-based?

Post by Mark Nunn » Wed Feb 14, 2024 8:23 am

Dan McEachern wrote: ↑
Tue Feb 13, 2024 2:15 pm
 Cast iron= dry.
Dan, Scott Conger told me the same thing. I was unaware that cast iron should be dry. Thank you for your input.
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Mark Nunn
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Re: Reamer lubricant, water- or oil-based?

Post by Mark Nunn » Wed Feb 14, 2024 8:36 am

Well there it is in my Machinery's Handbook. Cast iron should be dry. I should have looked there first. Thanks to all.
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Re: Reamer lubricant, water- or oil-based?

Post by tiredfarmer » Wed Feb 14, 2024 5:53 pm

Do you use cutting oil when reaming bronze bushings or can you ream them dry?
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Mark Nunn
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Re: Reamer lubricant, water- or oil-based?

Post by Mark Nunn » Wed Feb 14, 2024 9:34 pm

Bronze should have soluable oil.
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tiredfarmer
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Re: Reamer lubricant, water- or oil-based?

Post by tiredfarmer » Thu Feb 15, 2024 7:44 am

OK I'm not very bright. What is soluable oil?
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Mark Nunn
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Re: Reamer lubricant, water- or oil-based?

Post by Mark Nunn » Thu Feb 15, 2024 9:39 am

Soluble Oil is a chlorine-free, water miscible metalworking fluid designed to emulsify easily and form a long-lasting, stable emulsion when mixed with water
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Re: Reamer lubricant, water- or oil-based?

Post by jiminbartow » Thu Feb 15, 2024 9:51 am

Water soluble oil. Oil that mixes with water. Designed for providing lubricant and cooling properties to machine work that would overheat without it. Makes the lubricating oil thinner and allows it to go farther making the job more economical.


Just one example. There are all types of brands.
IMG_8537.jpeg
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tiredfarmer
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Re: Reamer lubricant, water- or oil-based?

Post by tiredfarmer » Thu Feb 15, 2024 5:49 pm

OK Thanks a lot for telling an old dummy guys. I always learn something on this forum.
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greenacres36
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Re: Reamer lubricant, water- or oil-based?

Post by greenacres36 » Fri Feb 16, 2024 9:42 am

I agree usually cast-iron is cut dry. But sometimes I would use something like WD-40 or PB blaster.
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