BuildTak is a thin, durable plastic sheet that adheres to the print bed of FDM (fused deposition modeling) 3D printers to provide an ideal surface for 3D printing. It replaces the need for blue masking tape and/or polyamide films such as Kapton. Composed of high quality, heat-resistant raw materials, BuildTak provides a stable build platform for 3D printed objects to adhere to while allowing for a clean, easy removal of completed builds. Lasts between 50-100 hours of print time. This is for a 10pack of any size we carry.