iAM Marketplace, a new storefront for used industrial 3D printers, materials, and spare parts, just launched today. It's mash-up of Stratasys subsidiaries and acquisitions (AM Marketplace, iSquared, Forward AM, Nexa3D), and, in addition to pre-owned hardware, there's a strong focus materials (filaments, pellets, powders) from a range of makers and custom material development. Correction: a previous version incorrectly reported that used non-stratasys machines would be coming to the platform.