How do I use a hole cutter drill bit (ø 6.3cm) such that I get an intact wood disk?
Use TWO hole saws. One with the standard pilot bit and one with the standard pilot bit replaced with a much shorter bit such that it can drill the large hole without the pilot bit getting into your piece of wood.
Get a scrap piece of wood, at least 1/2&quot; thick, maybe thicker. Clamp it on top of the piece you are trying to cut.
Start each hole using the regular hole saw. Drill into the top piece of wood until you have a good &quot;starter circle&quot;. Switch to the second hole saw and drill through both pieces of wood.
Lather, rinse, repeat.
Easier if you have a second drill. If not, be careful as hole saws can get really hot in use.