I've been reading a comp problem thread, and while I have nothing to add to the thread (I could, but it's well covered), one thing continues to irk me just a little.
It's the definition of G41 and G42.
G41 has always meant "cutter to the left of the programmed geometry" and G42 to the right. The Climb / conventional definition may work 95% of the time, but all I have to do to switch from climb to conventional is change from a right hand cutter to a left hand cutter, no re-programming necessary.
Just my $0.02