3D Print with Sand (2011) [video](youtube.com)

82 pointsby michaelxiaقبل 12 سنة9 comments

3D Print with Sand (2011) [video]

https://www.youtube.com/watch?v=ptUj8JRAYu8

3 comments

yzzxyقبل 12 سنة

Nice! Reminds me of this very relaxing video:

http://vimeo.com/9498805

tmslnzقبل 12 سنة

For context, Both Max and Marcus were studying at the Royal College of Art in London at the time. Not sure about the stool, but the Solar Sinter was Marcus' graduation project, and it was quite a hit when it went public.

agumonkeyقبل 12 سنة

Exactly what I thought I'd see.

brinkقبل 12 سنة

What's more interesting is how much energy there is in just that screen's surface area of sunlight. Enough to turn sand molten in under a second. Thinking of just how far away that is from the sun, and how much more surface area there is in a sphere with a radius that size..

huuuقبل 12 سنة

A laser of 20-100 Watt is enough for Selected Laser Sintering.

So a square meter lens for the sun will give you more than ten times the power professional SLS printers are using.

That is indeed a lot.

Edit: here a nice answer about the heat generated: http://physics.stackexchange.com/a/103039

baddoxقبل 12 سنة

I believe you can get around a kilowatt per square meter, obviously depending on latitude, weather, and other factors. That lens looks about like a square meter.

seifertericقبل 12 سنة

*Kilowatt/m^2

baddoxقبل 12 سنة

Yeah, that's the prefix I was looking for.

IanCalقبل 12 سنة

This is really cool, although leaving that size of fresnel lens uncovered makes me nervous.