A:AnswerWe haven’t noticed that it gets hot underneath. Ours sits directly on the counter top and no problems. I’d be more attentive to the cabinets overhead as the heat rises.
Not sure what to say about your weight “question”. I’ve never weighed it. Are you saying you weighed it and got a different measurement than the data on the website?
A:AnswerOur model is easy to clean with warm soapy water. Followed up with clean water to remove any residue. I didn't attempt to clean upper heating coils, and I removed racks prior to cleaning interior and unplugged the unit.
A:AnswerYou'll find the following in the manual:
BUZZER VOLUME - Press and hold the TEMPERATURE CONVERSION button for 3 seconds to enter the buzzer volume control mode. Press the TEMPERATURE CONVERSION button to select the desired volume. To confirm press any button.
A:AnswerYou would need to reach out to the manufacturer of the wood board you want to use to see if it can withstand the heat of being on top a toaster oven.
A:AnswerThe interface has some sound indicators when you press the "start" button and also the "ready" (oven pre-heat) and "done" beeps are easily heard, but while the oven/toaster is running, there is no sound.
A:AnswerTo be honest, I've made a whole lot of sticky, sugary, splattery foods. I've even had tomatillos splattering inside from salsas. I've never had a problem cleaning any of those messes with some soap, or a nice vinegar solution.