How do you solve cold start on a three-sided 3d printing marketplace?

Question

I'm building a marketplace that connects 3D designers, local printer owners, and shoppers.The model: designers upload files, nearby makers fulfill physical orders, shoppers get something printed and shipped locally.The cold start problem is three-sided (no makers means no physical orders, no designers means no catalog, no shoppers means nobody joins the supply side).For now, I'm recruiting makers first (I have a small existing community of printer owners from Patreon). But I'm curious how others have thought about how to approach this.Did anyone here solve a multi-sided cold start without outside capital?

berofeev · Accepted Answer

An idea that came to mind. Focus on makers with customers first, offering them a marketplace that intends to help them grow, by bringing designers who need them.It's like bringing two working sides in and finding the third side to bootstrap.