As long as a record flattener will have to use heat in any sort of contraption, I believe there will be risks involved in deforming the record. Because one never can tell for sure how long to heat it. A friend had a Furutech, we tested around 5 to 6 records, 2 got absolutely deformed it cannot be even put on the platter. And the time to heat is even made more confusing by so many kinds of the thickness used in records. 120g, 180g, 200g, and the Furutech even warns people not to use the unit with LPs that do not have 'lip guard' on the outer edges - like Sheffield Lab LPs.