"The Medway Handyman" wrote in message
om...
BraileTrail wrote:
On 5 Oct, 16:26, Bob Minchin wrote:
You need to look for fine "kerf" blades. (kerf = width of cut)
I buy dewalt saw blades designed for skil saws for this sort of work
but they are about 180 mm diameter with 16mm/5/8 bore.

Bingo! http://www.axminster.co.uk/product.a...16&src=froogle

You will often find that blades for cordless saws are thinner to save
battery power,

I've found http://www.itslondon.co.uk/ very good for saw blades.


--
Dave - The Medway Handyman
www.medwayhandyman.co.uk

Happy to be corrected about the availablity of thin kerf blades

However would I not be correct in thinking that the 45deg cut idea is a bad
one as even with a total 3mm loss of material (1.5 from each end) the hatch
will sit lower than the surrounding floor when dropped back in?

Also fixing the hatch back in is more problematic with the angled cuts and
no battens

What would be wrong with the tried and trusted method of cutting vertically
adjacent to the joists and battening (having made the cross cuts first to
find the exact position of the joists) ?

Regards