Hello, here is a spinner controller for use with spinner hacked games and homebrews for the Vectrex. Uses 12mm buttons mapped to buttons 3 & 4 and a 16 pulse incremental encoder with a 1/4 shaft, specifically the CTS 288T232R161A1. Top and bottom can be printed without supports but the spinner knob requires supports.15% support density in zigzag pattern worked well for me. Spinner knob insert is for aesthetics only and can be used if you have a textured bed. You may have to tweak the sizing on the spinner knob and spinner knob insert depending on your machine. Two different strain relief sizes included: 4.5mm for Genesis/Mega Drive style cables and a 5.2mm for larger off the shelf cable. Use 3mm flat machine screws in 20mm length.