PrintPort3D is a 3D print-on-demand and small-batch manufacturing service for online sellers in the United States. When a product sells in a seller's store, PrintPort3D prints it on Bambu Lab printers, fits any hardware, assembles it, has a person check it, and ships it directly to the buyer under the seller's own shop name within 3business days. Failed prints are remade at PrintPort3D's cost. There is no monthly fee and no minimum order. Sellers pay a make cost per order: $4 for the first print-hour, $3 for each hour after, plus material by the gram. They get a price the moment they upload a file. Orders arrive automatically from 11 storefronts, including Shopify, Etsy, Amazon, TikTok Shop, eBay and Walmart, and runs from a single unit to hundreds of parts are supported. PrintPort3D also offers Studio, a design tool that turns a written description into a printable product, so sellers can launch products without CAD experience.