Small Shop Coolant Invention (NIH)

snipped-for-privacy@gmail.com wrote in rec.crafts.metalworking:

Yabut just how Low Cost is THEIR idea of "Low Cost"?

BTW, Doug, it's good to see you're still around!

Do they say anywhere what it actually *is*?

-- Ed Huntress

...

Sanvik has a line of inserts designed to put the heat into the chip. I use the R390 ones on my mills. No coolant and the chips come off dark blue to black. I'm not home but IIRC the one inch runs

2500 RPM, 15 IPM, and up to .300 DOC on my mill. "The kid" turned me on to them from his machine shop job. Larger mills get higher rates than my numbers.

The inserts are very expensive. but you can always get them on eBay for about 20% of new. "The Kid" says everybody is stealing from their job and fencing on ebay.

Karl

>

I spent 10 minutes trying to find out what it actually is with no luck.

CarlBoyd

>>

Me, too.

-- Ed Huntress

"Ed Huntress" fired this volley in news:498c52e4$0$25457$ snipped-for-privacy@cv.net:

This shows it a little more clearly.

They circulate a cryogenic fluid through the tool holder. Ostensibly, it cools the insert from directly underneath it's mounting point on the insert platform.

LLoyd

>>>

Looks like maybe they run coolant through the cutter and use some other inert stuff to make the chips behave.