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How to deal with the proliferation of 3d printed nonsense?

How to deal with it? Just chill out and ignore it. Have a brew or glass of wine, kick off your shoes, and enjoy the good things in life.

Oh, wait. Grab your blood pressure meds! I just noticed a video on YouTube titled, "3D printed high precision V blocks" (improper lack of capitals is not my doing, just copied from the screen). I didn't actually watch it, just saw the title.
You may want to watch it. The guy does high end work and explains the why of it.