When people use the color change system of 3D printers, a large amount of flushing waste is produced, and in the highest case the percentage of flushing waste can even reach 80%. Remaker is a desktop-class small injection molding machine that integrates the functions of pulverizing, jigging, and injection molding all in one. It crushes the 3D printing waste and injects it into the mold. This enables the secondary use of brush waste, reducing plastic emissions and promoting sustainable development. It is worth mentioning that it is easier to use for personal use than industrial machines.