We are trying to use this to pick up galvanized duct work why it won’t stick. Is the galvanized on duct and the coating on the magnetic keeping this from working
Based on the product description, it does not maintain suction when the handle is released. The magnet engages suction when the handle is turned left and releases when turned right.
Based on the product information, it does not seem to be possible to adjust the safety factor for different loads. The safety factor of 2.5 is a fixed specification mentioned for the magnetic lifter.