Hey! Here’s an update on the Ball Sender. As you can see there’s not much difference between the prototype an the final design. It worked well at the first try. Actually there’s only one thing I like better about the prototype. It’s the LEGO Hinge Plate (4275 & 4276) because it has no locking which works better in this case. This part seems to be no longer in production. So I used the LEGO Hinge Plate 1×2 Locking (44301 & 44302) instead. I might try out LEGO Plate 1×2 with Handle (60478) and LEGO Plate 1×2 with Horizontal Clip (63868) but I guess it’s not as stable as the current solution.