01-14-2015, 08:12 AM
(01-13-2015, 10:10 PM)Highpower Wrote:(01-12-2015, 11:30 PM)PixMan Wrote: ..... and many different sizes under 1/8" that all have 1/8" shanks, including the (5) 1/32" solid carbide end mills I'd recently bought.
My theory is that the larger shanks make it easier to control runout from grinding when it's a bigger shank and holder.
Ken
Just curious Ken, but what kind of machine do you have that has the spindle bearings/run out, rpm, and feed rate necessary to be able utilize a carbide end mill of that size? You been holding out on us?
You've seen it. My milling machine is a 1983 vintage Alliant that is a Taiwanese made Bridgeport clone with a top speed of 4500 rpm. Nowhere near proper speeds for a 1/32" (0,8mm) carbide end mill, but I got the pack of 5 for less than one good HSS end mill.
When I used one of them recently I had the rpm up at top end and was very surprised that I didn't break the end mill going that slow. It actually cut pretty nice.