Kumiko length stop

Length stop for a kumiko angle paring jig. The main block is easy enough to make from solid wood, but I always find making a long mortise in thin material is risky, and labour intensive. There's a risk of the material splitting, also later in use when overtightening the screw.
So yeah, easy enough part.
It is about 150mm long, 20mm wide, and has a 5mm slot. The chamfered side of the slot goes down, so if you are using wood screws, the little protrusion in the wood does not interfere with the function.