Bear in mind this is designed as a safety feature and I take no responsibility for its use.

I printed it with PETG at 3mm height (for speed reasons only), wall strength 3, 3 top & bottom layers, 12% gyro infill. Works like a charm. You can put something sticky (rubber tape) at the bottom to give it more grip. The thumbscrew simply needs a "halt at height" to insert a standard M8 nut. A M8 coach bolt perfectly fit in the railing of my table saw. All it needed was a little plastic washer to stop it from spinning. You may have to adapt the design to fit your machine.

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Happy Printing