How to build a King Chair
Step 6. Make the king chair seat
Fix, with glue and 1-1/2" (38mm) wood screws, a 1"x 1" (25mm x 25mm) fillet of wood around the inside edge of the seat frame for the seat boards to sit on.
Have the 1"x 1" (25mm x 25mm) side fillets [j] slanting down towards the back of the seat, as shown in the diagram below.
Next cut the 1" x 6" (25mm x 150mm) seat boards [k] to length and glue them in place on top of the fillets [j].
The last board will need to be ripped down (cut lengthways) in order to fit.