Sure, ask someone to shovel shit for 8h/day 5 days a week and see where your thanks will get you.
You might find one sucker, but not nearly enough
You might find one sucker, but not nearly enough
The problem clearly involves an unequal distribution of work.
If everyone is else being paid and you are trying to convince a single person to literally shovel shit for 8 hours then yes, that won't work. They will feel like they are being taken advantage of. I think this is a common feeling amongst all workers. If your boss asks you to work late you are much less likely to be pissed off if the boss stays late and helps out too.
1) Have you personally tried to put this idea to practice? If yes, for how long? Would you be willing to share some details? If no, why not? It doesn't take changing the entire society, you can do something like that literally now. Be creative, travel to a different random town twice a month and offer to clean toilets in a couple of buildings? Again, I don't mean to be snarky with this example, I just think working on 3D printers doesn't cut it as a type of difficult labor. Think more along the lines of going down into a mine, shoveling literal shit for 8 hours, etc.
2) Imagine, the society has actually changed such that everyone is supposed to do a couple days of difficult labor. What happens if someone refuses? A punishment? If there is no punishment, what happens if almost everyone refuses and there's not enough people to sustain this undesirable but critical jobs?