by Dysplaced
https://youtu.be/FF_aFtmUEIk
Coin gun with 8-shot magazine. You can print the coins, but I recommend Eurocents, as they have more weight. Other coins may work, too.
It does not really hurt, but you can easily adjust the power in both directions by scaling the bow in the direction of firing.
Apart from the printed parts you will need:
40 cm thread
4 screws: M3x8 or M3x10 or M3x12 (plastic screws recommended, machine screws may work, too)
1 weak spring: d = ~15mm, l = ~20mm (I rolled it myself around a big pen with some wire)
1 ballpen spring for the trigger
1 spring for the coin downholder: d = ~5mm, l = ~30mm
Maybe I will adjust the model and use rubber bands instead of the springs and some plug in connection instead of the screws. But I cannot promise ...
