Metric aero launchrail button for 2020 rail

I looked everywhere but could not find any launchrail buttons that I liked that would fit metric rails rather than US imperial rails, so I adapted this  one from JackHydrazine to fit. Thanks Jack

Flat base-Print upright with supports- best used with contoured base- i.e. double button parts.

Contoured base- Print upside down with supports

Buttons to fit body tube circumferences as below- BT-50 upwards

changed to 8mm standoff and reduced in size to fit metric 2020 rail