...
One issue we ran into was the 1/8" acrylic sheets being sold out at the makerspace. Our design in CAD was used 1/8" sheets, but we were forced to use 1/4" sheets instead. This caused some issues with vertical alignment, since everything connected to the bottom sheet of our design was raised by 1/8" inch. We had to do some manual adjusting/sanding and print special pieces to make sure everything would still fit together.
We also ordered 1/4" bearings to fit our shaft, but they were lost in the mail. Due to this, we designed and printed ball bearing placeholders that met the OD and ID dimensions of the bearings and used them in the prototype.