I guess we are not changing the bookmarks at all Still cool. Any chance you can share the battery model with me? I might want to play with it a little and give it a try.I changed them to put the new book on them, and I modified the TI-84+SE to a TI-84+CE. They didn't seem too broken, so I didn't think there was anything to fix. To be honest, I didn't think we had discussed changing them, just to add the new programming guide handout that we need to design together.
I expanded diameter of the battery model by 1mm and enlarged the space for the washer; it seem to fit together better now. I need to make the screw holes slightly larger, and I really need to fix my adhesion problems (is my bed out of level on the right side again?), but it's getting there. I definitely need to make it 1mm or 2mm longer to get a snugger fit against the spring.