[Mr.buttons]

I need to mill a boss that is .550 long x.220 wide X.300 high with both ends rounded with .102 radius. I will be using a 3/8" end mill. Pleas help with program and cutter comp. Thanks.

[nofx]

you did not describe your overall stock or position of boss in relation to your x and y origin. so i assumed the bosses x y zeros were at the upper left most of the part. i also programmed it using a cutter comp instead of real position locations encase you need to adjust for tool diameter.

G00 X-0.5 Y0
G01 X-0.4 Y0 G42 Z-0.150
G01 X0.446 Y0
G02 X.550 Y-.102 R.102
G01 X.550 Y-.118
G02 X.446 Y-.220 R.102
G01 X.102 Y-.220
G02 X0 Y-.118
G01 X0 Y-.102
G02 X.102 Y0
G03 X0.602 Y0.5 R.5
rinse and repeat with a lower z height
I am missing all of the toggling Gcodes and Mcodes

You know your bored when. Rofl