insane lock in, I finished the whole linear motion, and made tons of small changes. Here’s some of the bigger stuff I did:

• I was originally planning to use thrust bearings, but they were way too big. Instead, I just decided to use 3x6 bearings sideways (ball bearings are designed to handle radial load anyway). The packaging was cleaner than thrust bearings anyway.
• for the linear motion, I had to add more dowel pins - linear bearings to stop the thing from rotating with the lead screw.
• I ran into some really stupid onshape problems where everything was off by 0.088 degrees for some reason. I was messing with random parts and doing random mates for like 30 minutes until suddenly it worked. I have no clue how, but that doesn’t matter.
• The linear cams were hitting the 3mm dowel pins inside the gear so I cut out part of it.
• The linear cam seemed really weak, so I connected the bottom of the ramp to the main assembly. This was a huge pain because there’s barely any space, so tolerances had to be tight.

Just one more day of cad and I will be done with it.