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Joseph Gwinn Joseph Gwinn is offline
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Default Cutting brass with a coolant

In article
,
Jim Wilkins wrote:

On Jun 8, 12:56*pm, Joseph Gwinn wrote:
...
Make some endplates, one with a drain fitting, and use flood coolant?
Joe Gwinn


I have been alternately welding steel onto the hinges and milling most
of it off again all day with maybe a drop of oil a minute brushed on
when the smoke lightens up. And it works fine that way. The finish is
good enough for the purpose and I haven't had to resharpen this end
mill in 3 years. (The tips are beveled and they don't wear down nearly
as fast as sharp ones.)

If the mill had automatic feed it would need an automatic way to apply
oil but it doesn't, I have to be there anyway to turn the crank, so
brushing on oil with the free hand is entirely practical.


I do have power feed, but the issue is surface finish. If I'm looking
for pretty, chip removal is necessary. But if surface finish isn't
important, then brushing or hand squirting works.

I have been using coolant in a hand squirt bottle with some success, as
it allows me to get coolant into places hard to reach with a brush.

Joe Gwinn