@nixCraft To be fair, I've repaired a few thousand dollars of stuff that would have been thrown out by using 3d printing.
The big problem so far is there's not really a repository of "3d printable commercial replacement parts" repositories. And the skill to design those parts still requires a lot of CAD skill.
I happen to know a bunch in CAD.
A LOT of consumer goods are all just plastic as well. Its a mixture of ABS, ASA, or nylon. You can print all of those, but nylon is a pain in the ass.
Volume knok breaks off the stereo? 1 hour model and 1 hour print.
Some internal plastic molded gear strips? Was probably a sacrificial gear. You can model and print, again in 2 hours tops.
Need a weatherproof housing? Download a box creator. Takes 3-6/hours. You'll need to buy some gasketing for the seam.
Its these small repairs and replacements that Ive done. Lots of them. And they cost anywhere from $.05-1$ of material. And even if they dont have the same durability as the originals, it keeps the devices working and out of the landfill.