I've wanted a 3d printer for a while but never had anything that I needed to print. Until I got a CPAP machine. The masks are made to fail, from cheap elastic

I've wanted a 3d printer for a while but never had anything that I needed to print. Until I got a CPAP machine. The masks are made to fail, from cheap elastics that stretch out after 3 months, to flimsy plastic that is supposed to be under strain and guaranteed to fail. And at $200-$600 to replace the 'shitty bits' a 3d printer will pay for itself very quickly. Edit: Lots of advice further down in the comments! Thanks everybody!