DIY Pinball - Flipper
This is the final version of my flipper design, uses an Allen key (hex wrench) as the shaft to make it easy to replicate using parts from your local hardware store.
I have made a space in the flipper for a zip/cable tie so no glue is required.
Youtube video about it is here https://youtu.be/4IaZik4l6m4
Print as strong as you like (infill).
I found that 50% infill seems plenty strong enough