The Ester - DIY SLS 3D Printer

[Helix]

Hello a development kit sounds like a lot of fun,one question why LED it doesn't give off much heat, it would have a coolness factor though

[bfoz]

Hello a development kit sounds like a lot of fun,one question why LED it doesn't give off much heat, it would have a coolness factor though

If the powder absorbs in the IR range, then an IR LED will heat the powder without heating the surrounding air (much). So it won't feel like the LED's are hot, but they'll still heat the powder. It's a lot like those IR heating lamps that you see in some stores.