You need a plan. Your wheel spokes could use the 40mm grenade round. The nylon shells are reusable, the low pressure means you can use an aluminum 'spoke' and you can 3D print the 'chalk/teargas' capsule.
That's all without getting into metal sintering and lost PLA casting.
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.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
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.Because much of what is in the published literature is nonsense,
and much of what isn’t nonsense is not in the scientific literature.
-- Sabine Hossenfelder
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