carbide micro end mills

Have a look at these:

Best, Steve

GD:

.0002 Dia.?!! Jeeze, figuring a standard 1,000 SFPM in alum. your RPM should be 3.82 X 1,000 / .0002 = 19,100,000 RPM. That's 19 MILLION RPM. Or conversely, if you ran it at 10,000 RPM the SFPM would be .262 X .0002 X 10,000 = .524 SFM.

And figuring a 1% chip load per flute that would be .000002 Now your feed rate should be .000002 X 2 flutes X 19,100,000 RPM = 76 IPM (That is if you could invent a 19 million RPM spindle). LOL

Bob, Yep, what amazes me is that they can even grind an endmill that small. I wonder if they have them in long and extra long lengths? "Can you neck a couple of those down for me please?"

Best, Steve

Garlic & Bottle,

The guy at PMT is Dave Burton. Dave made the mini boring bars for me that I used on my recent trip to buffalo NY. Going into a .019" hole in Titanium I had to bore a recess .100 " from the face. The tools did not break and I even had chip wrap if you can believe that. But I asked Dave to make the tools so I could back bore also. We reversed the tool path and it cut fine with no chip wrap. I wish I had a dollar everytime I asked the guy I was working with when I said "Is the tool still there"?

This guy is amazing. As other Grind Shops kept sending me NO QUOTE after NO QUOTE for making this tool he came back and made samples within a few days. We sell his tools on a regular basis. His packaging is superb. Locking mechanism built into the holder when you buy large qtys so the tools don't break in-transit. I will say PH Horn did quote it at 8-10 weeks around $100 each. Dave's price was $40 each.

The small nano tool on his site appears to be a wire twisted to me. I want to ask him about it. I'm not sure what you would cut with it, but everything is getting smaller and smaller these days.

JR

Jim:

You know this guy? It's a small world. Sorry, just couldn't resist the pun. LOL

Almost spit my coffee when I read this. Made me laugh because I could see myself doing the exact same thing.