/diy/ - Do It Yourself

Any 3d pig disgusting anons have any experience with injection molding?
I want to make aluminium molds for these parts. https://www.thingiverse.com/thing:4884410 However I am pretty sure I would need to use blown moulding since they are tubular sections. Is this correct? I was thinking of splitting it in half along the horizontal plane so I get a halfpipe section and then just rotating it to build a complete part. Could this be a feasible solution? btw I can't just print them because I want to sell them and the kit that I plan on replicating has like 300 of these parts, and it siply woudln't be economically feasible.