Wet vs dry milling 4130 or 4340? cutter coating?
Feb 08, 2008· Wet vs dry milling 4130 or 4340? cutter coating? We typically cut Al. Have heard a bunch that dry milling is actually better than wet for some reason. Wondering what the consensus would be on this? Also curious what, if any, coating would be preferred for this type of steel work? Cutter sizes will not exceed 3/8 and material thickness will be 5/8