Originally posted by WP4YT

Originally posted by sirhumperdink

Originally posted by WP4YT

3d printing is just a different way of making things that have already been possible to make for years.

edit on 4-12-2012 by WP4YT because: (no reason given)

not true with three dimensional printing you can produce single piece objects with internal structures which would be impossible with molding

but you are quite limited. Once you start printing you can't stop as the extruded plastic has to remain melted in a continuous stream as the print head moves around. I.e. all separate "structures" have to have a "bridge" between them

In Chicago, nearly 700 children were hit by gunfire last year — an average of almost two a day — and 66 of them died. That number is up over the previous year, even though the overall number of homicides in Chicago fell last year to a 45-year low.

The weather is turning in Chicago. The snow has melted, and kids are beginning to spend more time outdoors. In some Chicago neighborhoods, that's dangerous.

"When I got shot, it was no pretty sight to feel like. All I felt, it was burning in my whole right ribs," he says. "If I didn't get to the hospital in time, I would have been paralyzed all my life. I'm just glad to be here."

Marcus thinks one of the gangs made good on its warning last summer, shooting him in his own yard, when he was taking out the garbage.

"At first, I heard something fly past me," he says. "I was like, it wasn't nothing — so I kept on walking. The second time, it hit me."

School officials also use data about the kids who have been shot in the past to look for traits they have in common, trying to identify the teenagers most at risk of becoming the next shooting victims.

The Chicago school system is spending close to $20 million on advocates and mentors to intervene in the lives of the few hundred kids it predicts have more than a 10 percent chance of being shot.