Bert Coules wrote:
Roger Mills wrote:

It should also be do-able with a hand-held circular saw - but you'd
only want to cut in an upwards direction, which means doing one side
of the frame from the inside and the other side from the outside.

I'm not keen on that. I think the router is the way to go. I have a
10mm cutter, so six or seven parallel cuts should do it, without putting
too much of a strain on the machine.

Thanks for the reply.


exoperiencence suggests many light cuts have less chance of pushing the
thing sideways and gouging out more than you wanted.

However in your case you can nail support bars to fully support it in a
slot..so you can jig it pretty well.