Most rockstops on the market were too short for me (which is surprising, because I’m not that tall), and don’t work on chairs with enclosed legs. I decided to mill my own on my CNC router out of acrylic, using a carabiner to lock onto enclosed chairs.
Machined with 1/4in, 4 flute carbide endmill, 13.5 IPM, 20,000RPM.
Picture coming:
Alex's Projects 