"Dave Plowman (News)" wrote in message
...

Measured up something round I wanted a reasonably tight fit into 12mm ply.
60mm diameter. Bought a 60mm hole saw, and the hole is slightly
undersized. Any tips on the easiest way to enlarge it slightly and neatly
- about 1mm?

Use a rasp. Scribe a ring around the exiting hole first if you arent
confident of doing it freehand.