Urea

[jeex]

Urea is formed in the liver, but slowly disolves in alcohol, so i drink whisky for my health...


Anyway, Urea is also in artificial form used for making stones in games like Mah Yong. It feels like horn or bone but in fact is artificial.


Is there filament of Urea?

[CaptainObvious]

Well, according to Wikipedia:

"The substance decomposes on heating above melting point, producing toxic gases, and reacts violently with strong oxidants, nitrites, inorganic chlorides, chlorites and perchlorates, causing fire and explosion."

So scratch that out from the list of good things to push through a hot-end.

[jeex]

As it melts at 132 degrees C, the emulsion has to be on a carrier with lower melting point. Still, better not use it in closed space.

[Alibert]

Urea itself is not a polymer. I think you are referring to the urea-formaldehyde resin? This used to be used to make tableware, buttons etc in the early 20th century. I have actually done the reaction a long time ago for my chemistry class. Have a look here: http://www.britannica.com/EBchecked/...aldehyde-resin

In any case the urea-formaldehyde resin is not a themoplast, so you can't extrude it.

Cheers, Albert.

[jeex]

Guys, it was just an idea.

Bronze is not a thermplast: http://colorfabb.com/bronzefill
Bamboo is not a thermoplast: http://colorfabb.com/bamboofill
Pasta is not a thermoplast and chocolate is neither: https://www.youtube.com/watch?v=7HX9tVCbm5g

So stop nagging on details, but imagine what one can do with it. All inventions, how small they may be, start with imagination on possibilities.

Jeex exit on this subject.

[curious aardvark]

bronzefill is a weak filament with bronze powder. Bronze is not melted and the filament is not metal.

Urea is not suitable for a filament - I guess you want to make your own filament from urine.
Either way your posts are definitely taking the piss ! (just couldn't resist it)

Details are what makes 3d printing work.
Chocolate is a thermoplast. ie it's a plastic substance (which means it deforms and holds that deformation) and it melts when heated and sets when cold. Classic definition of a thermoplast.

I suggest before you post you ought to check out at least a few details :-)

[CaptainObvious]

Well, I for one I'm not daunted with such nagging details as it being not thermoplastic (thermoplastic shmermoplastic, harrumph!), or it's explosive tendencies; what tinkerer does mind, nay!, doesn't look forward for the occasional detonation in the workshop?
No, what turns me down from the idea is the smell, gas station toilet is not my favourite workspace bouquet; sawdust, WD40, PLAncake. and a hint of burning insulation now and then, that's the stuff. Piss, not so much.

[Davo]

Forget details.

What if we printed in SNAKES!? That would be cool. And they even deform and hold their shape, and flow when hot and set up when cold. Snakes might be easier than urine.

OMG, what about SNAKE URINE!?