No one would pay to have a 3D printer fixed. Or at least not pay enough for it to be a viable business. A brand new printer can be purchased for the equivalent of a couple hours labor, and that’s before replacement parts.
replyCustomers may buy a retail functional replacement now for <$400.
replyIt is called the Shoemakers paradox, where the shoemakers kids go barefoot.
Also, the same reason why CNC Milling factories don't tend to produce paperclips. =3
Rule #23: Don't compete to be at the bottom, as you just might actually win.
Not enough business, not highly paid enough. No true market for such a service.
replyThen that's not a business, that's a tax write off.
replyAnd it's not even a tax write-off until you have enough income to offset expenses. (Which is nice as far as it goes but is small scale where you can write-off a few $K in expenses against a few $K in income.)
replyComing at it from a different angle
replyIf there's already income paying the pesky mortgage, you start up an official business as a side hustle. As long as you are showing income even if at a loss, you then get to use that loss as a deduction. If it never pans out to be profitable to the point the tax man strongly suggests the business should close, you close it. In the mean time, you've followed a passion, that even as a loss, still gives financial benefit helping with the pesky mortgage.