Princess oven timer knob

thingiverse

My mother-in-law's husband recently acquired a compact electric oven branded "Princess", but unfortunately one of its knobs malfunctioned - specifically the timer setting knob on the right side. Despite multiple attempts, I've finally come up with a functional design. It features an open center around its axis, except for a small tab that fits snugly into a matching slot on the axle. This ingenious setup allowed me to visually inspect potential mechanical interferences and identify their causes. With the design now working as expected, I can proceed to fill in the hollow section from the outside - but that task will have to wait.