Spoolmate extends to aluminum welding Miller Electric's Spoolmate 100 Series is designed primarily for anyone who does occasional aluminum welding. The series features a recessed contact tip and a clear spool cover to help reduce the number of burnbacks. The 100 series also features dual V-knurled drive rolls to ensure consistent feeding of aluminum. Users can also adjust drive roll tension to match the wire being used. The Spoolmate 100 series comes standard with a 12-foot gun cable, and comes in a convenient carrying case that also holds extra contact tips, nozzle and wire spool.