my first post, i have a very old refregerator i am in the process of converting into a hot meat smoker, it is all metal no plastic, pretty small its perfect for what im doing, i have small holes at the bottom for air inlet and a small metal vent at the top for a damper to release smoke and control heat, i bought a small hot plate warmer and put a pan on chips on it and it smoked perfectly i left it turned on for about 45 minutes and the hottest it got was 140 degrees, i had to leave so i turned it off, wondering should i leave on longer to see if it will reach 200-225 degrees or shoud it of reached the temp after 45 miniutes,