Lol. Yeah, no. The link was to show a huge difference in yours. Also, look up resin types before you comment. And if you think $70 is what a manufacturer would pay then whatever. And if you $70 is the cheapest youre wrong about that too.I am confused. You have attempted to justify your "$50 (all production costs)" estimate by linking a $70 jug of resin in a volume that might not be enough to produce even one set of parts.
In addition, the resin in your link is meant for investment casting of metal in plaster, not for mechanically strong and durable parts.
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