I got this Bobby Car incl. push pole from a friend, but the safety pin was missing. Perfect chance to test my new 3D Printer! After looking online what the pin looked like I took all measurements and began modeling a 3D printable replacement. I'm sure you could optimise the model so it doesn't need supports at all, but with the Prusa Slicer and MK3S+ they broke off perfectly without using any tools or even force. So I'd recommend printing with supports, with the option “Support on build plate only”.
This is my first model for the 3D community, please let me know what you think!
The author hasn't provided the model origin yet.