Thought I'd make a tutorial on how to create snap fits for circular PCBs. This method uses the sweep feature to create snaps that follow a path. Tabs with 45 degree snaps secures circular shaped PCBs.
Adafruit Circuit Playground Express
https://adafruit.com/products/3333
Download Snap FIt Case for Circuit Plyground Express
https://www.thingiverse.com/thing:3296375/files
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