My Tumbler Came Out Of The Oven And Has Spots All Over It, Why Is that?Updated 14 days ago

This can happen for a couple of reasons. First, make sure to use a good amount of heat tape so that your sublimation paper is snug against your cup. The tape has to be very tight in order to ensure the paper is tightly hugging the cup. Next, double check your baking temperature, incorrect temperatures can really impact whether or not your cup sublimates properly! We recommend baking your cup at approximately 375 degrees for 6 minutes, rotating the cup every 2 minutes. Be sure to use a thermometer that is sitting inside of the oven so you can get an accurate temperature reading.