Morning,

I'm replacing the kitchen floor. Have lifted current floor (line tiles - 
yuk) to reveal concrete floor.

I don't anticipate any problems, other than this one: we've extended the 
work surface since moving in and the end is propped up with conti board 
which sits on top of the current lino tiles. The conti board is also 
screwed to the main wall, so what I plan to do is to somehow trim about 
5mm from the bottom of this conti board but it will need to be done in 
situ.

So what I need as a tool which is capable of cutting through conti board 
approx 12mm thick but at an angle of 90 degrees. I was thinking maybe of 
a circular cutting bit to fit into a power drill - do such things exist?

Last resort I suppose would be to use a hand saw, but that will be a 
bloody nightmare job.

Any recommendations gratefully received.
-- 
Regards
Jon