You Will Need
Turn your oven up to 200 degrees F. Place an overturned bowl on a cookie sheet and center your record on the bowl. Place in oven for 2 minutes. After 2 minutes, check to see how malleable the vinyl has become. If the record has totally flopped downwards towards the cookie sheet, take it out of the oven. If not, leave in for another minute and check again.
When the vinyl can be shaped with ease, remove from oven and bend one 1/3 of the record toward the center to make a lopsided taco shape. Then lay the record flat on the cookie sheet and put a plate in between the folded sides of the record (like the taco filling, if you will), so the record will flop over a bit more. Put in oven for another minute or two.