How to flatten a warped vinyl record

Use two clean 330 x 330 mm ceramic floor tiles, each with a smooth top side.  Preheat oven to 120-160 degrees Fahrenheit (say 65C). Place both tiles in the oven, face up, on separate shelves so they heat through thoroughly.  Leave to heat until the thermostat is steady at 65C. Using a protective mitten, remove […]