New to 3D printing, makerfarm 10"

[printbus]

...Option #1 sounds like it would require that I reprogram something, presumably the main board on my printer, which is something I've never done... Is that something that can be done via USB, and what software/interface do I need to learn how to use? I couldn't find an option in the printer itself to adjust that, but is there a way to add that setting?

You are correct. This would involve replacing the firmware programmed into the flash memory on the processor on your electronics board. It's not necessarily a hard thing to do, but it can be a bit scary or daunting the first time through it. The printers from MakerFarm run Marlin firmware, which is compiled in the Arduino development environment. There should be a section in your printer build guide that walks you through the basics of downloading the source code, obtaining the Arduino environment, building (compiling) the Arduino "sketch", and uploading the result to the printer via USB. You'd edit the referenced line in the configuration.h file to whatever threshold you wanted.

Technically, yes you should be able to add an LCD menu entry for setting the extrusion mintemp, but that would involve having to update the firmware as well. I'd want to leave the details on doing that to someone else - I don't have an Arduino/Marlin configuration to test with.

EDIT: I see the current build guides provide a link to a separate document that now provides the firmware info.