(02-21-2013, 08:16 AM)Sunset Machine Wrote: Aluminum? The finish on the sides is very good too. Freshly fluted endmill at full depth?
You are correct my good man, the material is indeed aluminum.
The endmill used is a Lakeshore Carbide tool. Great endmills at a very good cost! For those pcs I was using a .500" solid carbide variable 3 flute endmill with a zirconium nitride coating.
http://www.lakeshorecarbide.com/standard...errad.aspx
It was not new by any stretch of the imagination, and in fact is my roughing endmill which has most likely been in the machine for a few weeks.
As I said......they are GREAT tools!! Even when a flute corner gets chipped, we run them until the load meter in a deep cut tells us we best get it outta there or else!
Those tangs are .730" high, but the profile was roughed out with a 2" cutter, then semi-finished at half depth (2 cuts) and finished with the solid carbide em, full depth.
I have some video coming up here soon, but I have to warn you, it was the first piece with a new program, so it is AGONIZINGLY slow to watch.
After it's a proven part and program, the feeds and speeds are ramped up considerably.......but even watching it slow.........it's still machine porn nonetheless!!
Best Regards,
Russ