Master Grinds Hardware: Rectangular and Round Details. he Wore Red Gloves With Rubber Pads to Protect Hands From Burns Sparks. it Works With a Green Machine That Has a Red Disk, it Spins and Grinds Details. Master Works in a Shop and There Are Many Devices. it is Very Dark. Behind the Master is Another Device For Processing Metal. it is Large and White. Sparks Fly When the Master Metal Handles.