I read a lot of comments on here about 'someone needs to cast such and such part', someone needs to build this so it can be cast in resin', 'I need such and such, someone build it to be cast', 'we need this in resin' 'if it was available I'd by 10' and so on.
So be that someone. Instead of waiting for something to fall in your lap or waiting for someone else to do it, be that 'someone' that everybody is waiting for.