Originally Posted by Bluehawg
When using a 1/16" thick cut-off wheel on an angle grinder, you can "score" the line you draw with a marker by lightly touching it to the metal and letting it trench in a bit. After you have done this a few times you can allow it to cut a little deeper and the grinder blade itself will keep your line straight along the mark you have made.
That's what I was trying to say.
Performer, UDS, 2011 WSM, Frank-in-Weber, 120 Gallon Offset, IQ-110, ET-732