mmntech
Lifer
- Sep 20, 2007
- 17,501
- 12
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Layers of material = low shear resistance. Not an issue with prototype, but for real products it's a no no.
And Ford's contribution is assembly line, not automobiles.
Well, he did invent an affordable automobile, thanks to the assembly line.
There's going to be room for mass-produced injection-molded parts for quite awhile. Those machines measure cycle time in seconds.
Bottlecaps, for instance: One mold can eject a few hundred caps each time it opens, and it's going to do that every few seconds. They'll have engineers work on ways to reduce that cycle time by 0.1 seconds, because that can save them millions of dollars a year.
Injection molding is cheap (in quantity), and it can be damn fast, and fairly accurate.
Accuracy is definitely an issue. You can't do a lot of intricate detail on 3D printers that you can do with injection molding. I've seen people try to create LP albums using them, but the sound quality is worse than a bad telephone connection.
