The point of these printers is to be reliable and accessible enough that you don't have to worry about that, just like you don't worry about supervising your dr

The point of these printers is to be reliable and accessible enough that you don't have to worry about that, just like you don't worry about supervising your drier. Just like most appliances, a 3D printer will only catch fire in the case of a serious hardware malfunction or egregious user error. The point is for this to be rare enough that the risk is negligible, so all you'd worry about is your print failing.