On 15/06/2019 11:13, Dave Plowman (News) wrote:
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?

Have you got a flapwheel?

SteveW