How do make a hole on the floor bigger?
My current coaxial cable is through a hole on the floor (leading to downstairs). What I want to do is put an ethernet cable through to the room below. I already have a hole that only fits coaxial, so I just want to make it bigger instead of making another hole.
If you only have Subfloor and Ceiling to worry about a sharp small chisel would do the trick to make your new hole big enough to accommodate the ethernet cable. And if you are careful you wouldn't have to remove the coaxial.