Yes, the melting thing was very puzzling. Just mentioned the thermometer thing 'cause I was so surprised that mine was so off. Now I test new ones all the time . I think that the wax must have had a very high mp. I only use a double boiler to keep wax warm. Don't think you can get the wax over 200 with one. Also I found that if the water level in the double boiler isn't at the same height as the wax in the melting pot, I takes a long time for the wax to melt.