Above is the release pin for the bat which is triggered by the servo motor. To make this part I used a jigsaw to cut the 2x4 seen in the picture. I then screwed in brackets on either side and bent the pin out of a piece of wire. I attached the pin to the servo using a length of thread that I folded over itself a few times to add strength. Initially the pin was not functional because after the servo pulled it, it would jam up and not let the bat fall. I was just about ready to redesign the trigger mechanism when I tried bending the pin a little bit at the beginning. This solved the problem and it hasn't jammed since.