Can anyone give me a starting point on speeds and feeds for 1/2" Ball nose, 4 flute end mill? I have a 1hp spindle on a Desktop. I have only used 1/4" end mills thus far, but have a project that needs a 1/2 inch ball. It's not a 2.5d, I just need a round bottom on a pocketing tool path. I'm going to do a first cut in pine and if all goes well I probably use maple for the finished project. Thanks