DIY SIM racing handbrake (or sequential shifter)

8mm rod for the pivot.
2x switches with arm (contact switches) required
8mm threaded bar in the handle to join the two pieces together.

8mm bolt / nuts for the clamp.

grab some springs to return the lever ( roughly 10mm dia 20mm length)
some M2 bolts for adjusting the switch contacts stops, M3 to screw in for actual travel stops.

Apologies for the poor description, its late and I am busy!

PLA worked fine for everything, been using my handbrake for about 6 months now.

I ran the switches to my T300RS base buttons L3/R3 wiring.
You could run them to an arduino etc for stand alone handbrake etc.