Quick spot-check to see how up on your production methods you guys are: How was this Ohlala watering can (don't hit the link yet), designed by Barcelona-based CrousCalogero Design Studio, manufactured?
Hints: Yes, the object is completely hollow, as you'd expect for a watering can; it's an older production method (not RP); it's made from plastic, we're guessing polypropylene; and yes, the object is all one piece.
Hit the jump for the answer.Rotational molding! I'd practically forgotten this technique even existed; we see it so rarely, probably because you could accurately describe it as being "expensive, and takes freaking forever."
Our first article on rotational molding is from Core77's early years, way back in 1994. (There's one typo/word missing in the article, see if you can find it.) Pre-3D printing this was the way to make hollow plastic parts. But here's the question: For those of you with direct experience with RP machines, do you think rotomolding will eventually be replaced by 3D printing, and if so, how quickly?
It's true that 3D printing probably takes the same amount of time or longer than it would to spin up the Ohlala, and the "resolution" isn't currently comparable, but do you think the RP writing is on the wall?