Got a 2000lb tractor on a parking pad that I'm going to have to re-engine. One of the chores associated with that will be to elongate two eng mtg holes approx 1/16" in heavy frame rails. The holes, with the engine out, should be in the clear, and accessible. It's going to be necessary to take the tools to the work, and not the work to the tools.
What kind of tools do I need to make this reasonably easy? I thought about a high speed cutter head for my die grinder? Is that the best way to go?