>>45
Recently I've bought a multicooker. A pretty advanced model, with volumetric heating and fuzzy temperature control. I've tested it on some recipes and it cooks really well and evenly, even my mom can't do so. Some day I tried to make it to cook me a breakfast. It has that delay timer, so I can load ingredients in the evening and delay cooking until I get up, take a shower etc. I've put milk, oats, some sugar and salt, closed the lid, turned on power, entered the menu... just to find out that the delay timer has only 30, 60 and 90 min. choices.
I have a hermetic tank (which is not a thing you can 3D-print) with not-so-cheap heating elements positioned in specially chosen places and a temperature sensor. I have a complex PIC connected to all this stuff to conduct it in an ensemble of cooking magic. And I can't use all this advanced technology because some chinese genius decided that 90 minutes ought to be enough for anybody!