Yes, it is a DIY job. \\\\thanks to all the advice, I'm going the board cutter route and will fill with the ready made hatches - a bit pricey but obviously convenient. Thank you to all for excellent help.
OK, very useful experience - thankyou. I think I will take your advice and cut the holes with a board cutter as suggested. Which is the best board cutter for a one-off job like mine? I have a powerful half-inch Bosch power drill - will that do the job OK?
I realise this is a well discussed issue but I should still appreciate some advice on my particular job.
I have to cut an access slot in an 18mm chipboard floor layed in 1988 when the house was built. It appears to use T&G boards but I don't know whether they are glued or not.
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