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Submission + - 3D Printer Hype (

JumpSocial writes: I'm getting a bit tired of hearing people talk about 3D printers as if it's a home based factory. I think the media has over cooked this one a bit. There are much better technologies for making things. Besides, 3D printing isn't even new. What's new is the consumer grade machines. But they are very weak compared to other means of making things.

Submission + - Artists Drive Me Nuts. Red's Not a Paint Primary . (

JumpSocial writes: Artists are all Red-Yellow-Blue when it comes to primary colors and color theory. You can't mix many colors from those so I made up this explanation of color.

I now enjoy this discussion at dinner parties since I can roll out this Web page which so far has been reasonably convincing.

Anything to add to this?

Comment redundancy (Score 1) 303

It's pretty cool but it should have redundant engines. Engine failure is inevitable and it'll cause injury. They have ducted fan helicopters in Avatar (James Cameron's recent movie). That's similar to this except the Avatar copters had tail rotors and a vertical stabilizer. I suspect that it's a bad design choice since ducted fans it may not auto-gyro. For the jet pack, I don't think there are many applications for it aside from just screwing. But perhaps a cool discovery gets made while developing that stuff. Maybe they could cook up a VTO (vertical takeoff and landing) ultralight that has a wing and can also fly using the wing. I saw the comments about using flying things in place of cars. One huge issue is that cars already use too much energy. Thing that fly are even more demanding for energy. So where things stand now, I doubt airplanes will replace cars for a long while. Things that fly will be better for stuff like the airlines and military are already doing for a while but not to replace cars.

Comment spam (Score 0) 353

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Submission + - The design of things ( 1

JumpSocial writes: I'm revising instructions for a model air plane. What to do about Step 5 and 6? S5 and S6 are the creation of the Fin (aka Rudder I'm gluing the Fin Leading Edge to a piece of tissue, then gluing the assembly onto the body of the airplane (the body is aka Motor Stick). I'm entertaining having them reverse the order of steps. glue tissue to the motor stick then the Fin Leading Edge to that. Would that be simpler?

Comment older people (Score 1) 174

Younger people are looking out for their parents. Older people aren't. Also older people have more friends. They've had more time to accumulate. Further, old people are less biased about who they connect to. If you approached somebody at a dinner party, do you think an older person or a younger person would be more open?

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