Hole Cutter Up To 16 Mm Ø

There are far more holes to be drilled in a helicopter fuselage than just the ordinary air inlet holes.
Think of the access holes for the needle valve and the glow plug, openings for the exhaust manifold and the initial stage of cutting window openings.
This hole cutter does an excellent job.
Hole cutter, up to 16 mm.

Here a few hints for making perfect small sized holes with the cone shaped hole cutter 11/64:
Take an old used o-ring, for instant Ord.No. 74/5, and push it over the hole cutter to a position of your desired hole diameter. Just stop cutting as the o-ring is getting close to the surface you are working on.
Another easy methode is to make a mark with a felt pen at the proper diameter and stop cutting at the mark.