So the hardwood parts are Sapele. I got hold of a big chunk (5" x 3.5" x 15") from a local wood workshop and decided that as I have been trying to learn to resaw I would try and mill it into what I needed - which went successfully. I made it into some 3/4" planks, and some 1/4" thick pieces for the edging. I made the edging oversized and then flush trimmed it to the tables, before giving it a 1/8" roundover. The router table actually made itself as I pre-did the roundover for the underside of the edging on it before glueing on.
The rest is made of 1/2" baltic birch ply, I laminated 2 pieces together to make the table and extension tables to keep them extra sturdy. Joints are either glue + screw, rebate, or dado. The edging is just glued on, and where two pieces of edging meet it is mitred.
The extension tables swing up on piano hinges, and then the support wings pull out and there is a recessed magnet which mates with a magnet on the underside of the extension table to keep it in position. The support arms double up as accessory and bit storage areas.
The main table also lifts up to allow me to access the router and change bits etc. As it happens the dewalt palm router is very easy to adjust depth on using the 'screw' mechanism and so I don't need to lift the table to do that.
There is a hole in the back for dust extraction hose and the power cord.
I decided late on to add the facility for a starting pin to the table top - just a 8mm threaded insert. I might add another in a different position at some point later if I need to.
It is finished with 4 coats of a water based satin alkyl varnish, which I then polished so it is silky smooth.
It fits neatly under my bench and I am delighted with it. I do need to come up with a system to keep the loose whiteside bits in their packets in place on the top shelves.
There are 2 T-Tracks ready for a decent fence which is the next project...