@jeffb There are three ways to remove models from the layout:
1. Click on the model. Click on Remove.
2. Click on the model. Press the Delete key on your keyboard.
3. Use CTRL-A or CMD-A to select all. Press the Delete key on your keyboard.
You can also clear the entire project by clicking the X at the right end of the project name in the upper project bar.
If that does not work, you can delete the project by closing AutoMaker and browsing to /Documents/AutoMaker/Projects and deleting the project. If you aren't sure which project and want to save any of them, you can move the projects into another folder. Once AutoMaker is restarted the project should be cleared.
If that doesn't work, do a clean install:
If you can provide pictures of what you are seeing we can probably give you more specific answers.
I don't turn my printers on and off much. If I am going to be using it, I turn it on and leave it on until I am done with it, anywhere from a couple of hours to several weeks. It isn't hard to reach back and flip the switch. I prefer it back there as if it were in the front there would be the chance of accidentally hitting the switch and turning the machine off.
If you are turning the printer on and off a lot, please state why as this may be an indication of a problem with the printer that needs to be addressed.
To my recollection, you are the only person who has complained about the location of the power switch. This is a very common placement - my paper printer, laser cutter, all my 3D printers, and my TV all have the power switch in the same position. Even those that have a soft-on or push-button power control have a hard power switch in the back.