It needed a weight to stop the top from curling and popping off, maybe some plywood with the foam on it will be better Published November 6, 2016 at 1936 × 2592 in New Improved RS Steam Heat Pasteurizer It needed a weight to stop the top from curling and popping off, maybe some plywood with the foam on it will be better It needed a weight to stop the top from curling and popping off, maybe some plywood with the foam on it will be better