RubberBiker wrote:
Got a circular saw? Even a cheapy with a sawboard would do the job
accurately. You could pick one up for £40.

I was assuming it was too thick for a circular saw, but yes - if a CC
has the depth, job done.

Even if it doesn't, cutting a groove to guide a handsaw (or turning it
over and running a second groove, or possibly through cut) is another
approach.

A 185mm circ saw will cut about 65mm. OP said it was 5 - 6 cm thick, so
should just be enough.


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