I'm planning to build a structure of about 1.2m x 1m x 0.5m (specifically it's a 1:6 doll house) in 12mm (half-inch) ply and don't want to use internal square-section to support the corners, because this will encroach into the interior space.
I'm considering using mitre lock joints but the information for this mitre lock bit states that it should only be used inverted. However, I don't have a router table, nor do I have space to keep one if I bought it. So I'd like to know if there is a technique for using this kind of mitre lock bit without a table, for example with some kind of jig.
I expect that a device like the WoodRat would be capable of doing this, but it takes up almost as much space as a roter table, so I'm somewhat reluctant to go that way.
Can mitre lock joints be made (in plywood) without a routing table? How?