My experience to date is with solid wood (red oak, soft maple, cedar, cherry), but am being coaxed to make some MFSlab - Work Tables for friends.
http://www.multifunctionslab.com/
The Alpha I use has the spindle speed fixed at 12,000. With solid wood I have found that 1/3 to 1/2 the end mill diameter pass depth increments and 1.5 inch/second feed rate gives me good results and tool life.
So, on to 3/4" MDF. What have people found to work well? Do cutting tools have a different life with MDF? Is a two flute up-cut end mill viable? Since the holes are 20 mm, I intend to use a 1/4" end mill.
Going further, is light weight MDF any different?
Steve.