I just finished the adjustable jig frame for my Katsu router (Makita rt0700c clone).
The plate is 10mm aluminum, machined 8 and 14mm in order to create a rail. The slide has 4mm screw pin and 3x M4 locks.
I decided to drill holes for the large and the compact router frame. Using only one lock it's possible to draw circles of 2cm radius, considering a 12mm cutter.