[FC] rear bearing

[Tom St.Amand]

I am restoring a 64 Greenbrier that has been parked since 79. I want to lube the rear wheel bearings before it leaves the garage.  I have read several methods of drilling and getting grease to the rear wheel bearings, my concern is getting drill shavings in the hole when the drill breaks through.  I am sure some have had success at this but I am also very interested in hearing of what didn't work.  I have the original set on the van plus a set off a parts van I can do bench work on.  I am a machinist and have access to a shop full of ways to pierce or cut a hole (small dremmel type tool to grind a small slot?) shavings would be pushed away from opening but sealing the hole would be messier.
Thanks,
Tom St. Amand