Before I post my question, let me ask this. Has anyone else noticed that the search function on this site (for the general forum) will not generate a hit any newer that 12/31/04? I don't know for sure if that is the cut-off, but it seems close to it.

I am being asked to put a poke through receptacle in a stress-core floor. The one Graybar stocks is made by Hubble and needs a 3" hole. My question is do I need to core this hole with a bit (or hire out a bore) or can I use my Bosch rotary hammer and chip the hole out? How close do I have to be?