Originally Posted by
polyglot
That's well and good if you a) have a lathe, b) don't want to make 10 of something at the push of a button and c) don't want anything more complex than a circle. Strength is a function mostly of form, not the construction process; it's a little weaker than injection moulding but not so you'd notice. And if you want strength, you can print in sintered metal.
Keep in mind that most people don't own machine tools. However anyone can draw up a couple files and have them contract manufactured pretty cheaply using tools that they could never afford. You can also share/sell the IP inherent in such a design whereas if you're operating a lathe, you're effectively forced to sell your labour if you want to produce a quantity of parts for sale.
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