tell the council plumbers that! last time i was workin in the same house they cut a floorboard for us (since we lacked a circular saw). and went thru 2 of their pipes!
depends on what exactly you want
the usual is cut off centre on the joists using a circular saw to miss the nails or remove the screws and cut centraly cutting half a mm less than the thickness of the board to avoid damaging services
and where you cut across the boards or off the joist you secure a batton on the sides to sit the "trapdoor in "and securely screw down to prevent sqeeking
The easiest, if you need to make a lot of acces holes in chipboard flooring is the Trend Routabout for use with a router. It cuts a circular hole into which can be fitted plastic rings into which you put the inner circle.
The Routabout is pretty good if you know *exactly* where you want the hole, and you can't see through the chipboard to determine that, of course. Get it wrong by a few inches and you're cream-crackered!
(I haven't got shares in Trend either, but they are a 10-minute drive from me, which can be handy when I urgently need something of theirs!)
If you need to find a tradesperson to get your job done, please try our local search below,
or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Please select a service and enter a location to continue...
Are you a trade or supplier? You can create your listing free at DIYnot Local