Hole saws and access under floorboards

[bejay]

Can somebody tell me if a hole saw bit needs special fittings for my rotary drill. The job I have in mind is I have nailed down floorboards in the loft and want to access under some floorboards before refitting the same boards. It seemed a good idea to use my drill with a hole saw to cut about 5/8" diameter hole around the nails so I can pull up the floorboard sections, leaving the nails in place with their wooden plug ready when I refit the same board. Is this possible please.
Thank you

 

[Chukka63]

a hole saw tends to have a centre drill bit.you need a plug cutter to do what you have in mind.in hindsight you should always screw chipboard down.could have just took the screws out.a plug cutter will fit in your drill

 

[bejay]

Thank you Chukka. I've now got myself a plug cutter, it burns a bit at times but it seems to do the job so far after two nails.