A new type a 3D printer, where the material hardens immediately after extrusion,

A new type a 3D printer, where the material hardens immediately after extrusion, allowing for limitless overhangs without any support material! Some really cool stuff. Maybe this method can be applied to other 3D printers some day? :slight_smile:

That’s very nice. I’ve been researching extruding a heavily aerated corn based material, very similar to breakfast cereal. It relies more on baking the substance vs a chemical reaction, but produces a similar looking extrusion.

Wow !!!

poo on a string

I wonder if this could make a 3D raft that you could then print with a smaller nozzle on.

Another great Dutch invention!!!

they have heat guns pointed at the material to cure it. this can be done with plastic printers if you blow cold air over the extrusion. that’s how http://www.the3doodler.com/ works

@Sparr_Risher fans definitely help, but ambient temperature doesn’t seem to be quite enough to get a result like them.

It looks to me like this is a time lapse video. I wonder how long it takes in real time.

@Thomas_T_Sorensen this video shows much higher than ambient for curing the material. the equivalent for plastic would be much lower than ambient for cooling it.

@Sparr_Risher Exactly my point. Therefore just using fans isn’t enough :slight_smile:

We’re close with this: http://www.kickstarter.com/projects/1351910088/3doodler-the-worlds-first-3d-printing-pen

Does anyone happen to know what kind of cooling technology the 3doodler uses?

I presumed it was simply precisely heating it so that it’s just at the point of still melting when it comes out of the end.

What about a peltier element to cool the fillament? A fan on the cold side make some sort of mini airconditioner!

@Mano_Biletsky_Open_M My thought exactly. And then the hot side can be used to heat the hotend (probably isn’t enough, but you might as well use the heat you’re producing anyway).

3D printing pen is what I would use this for…