This is most of the hard part of the selector mechanism I designed for the slide scanner. This is now using a rotary picker to remove the bottom slide off of a stack of slides that will sit at a 45º angle to the bottom cutout; i.e. it’ll be in line with the angled cutout on the top.

I still need to make the slide stack above it and the piece that’ll go under it to move on to the rest of the scanning mech. But this is some cool progress! The mounting bosses will be on the other parts (to be attached) that’ll hold these parts fast to the mounting surface that’ll be behind this.