The following sewing machines are known for their durable, mostly all-metal construction and minimal or no plastic parts: • Singer (pre-1970s models) – Models like the Singer 15, 201, 66, and Featherweight 221 are especially popular for their full metal build and reliability. • White (pre-1950s models) – Heavy-duty machines often built into cabinets, known for their rugged cast-... https://qr.ae/pA6yXc