Final Pen Piece
It took a bit longer than I thought it would, but I finally have the pen piece finished. I need to sand down the stabilization rod about half an inch, and acetone one more piece on to it, but neither of those affect how the pen moves up and down. I was having problems earlier with the pen cap, but my redesign allowed me to incorporate that into the pens movement.
It looks a little bit choppier in this video than the one last for some reason, but in real life it is much smoother. Even though I did end up using one of the weaker motors, it works well enough, and it will only get better with time as the printed parts smooth themselves out. I had to do a little bit of sanding to get the pieces to move, but there was no acetone or WD-40 on this piece.