Hi, I'm looking for a face mill somewhere between 2.5" and 3" diameter that'll give me the absolute best possible finish on aluminum. Cost and speed etc are secondary concerns, I'm mainly using this to just take a skim off the top of extruded stock and get rid of the giant calking gun marks. (chair)

I looked at valenite but honestly I can't find those pentagon style inserts for the life of me. I found a few on mcmaster but they didn't have the finishing ones only the mediums.

I know a few guys said hertel on here for alu, any suggestions on a specific model and / or insert that works well?

Heres a Hertel one I was looking at:

http://www.jlindustrial.com/catalog/...tosearchpage=Y

Kennametal seems to make about 300 different ones and I can't find much for info online telling me what is for what... Just different angles and such... Thing is I can get kennametal inserts at a decent price all day long... but how many inserts is a 3hp bridgeport cnc really gonna burn up haha.

which brings me to my next q... What geometry should I be looking for to give a decent finish on alu? Heres a few hundred kennametal ones:

http://www.jlindustrial.com/endeca/s...Keyword+Search

Any help? These are kinda spendy new so I'd rather not try a few haha before getting the one that works for me! :cheers: