3-D Printers

Pap

https://www.youtube.com/watch?v=kw0-JRa9n94

Pap

https://www.youtube.com/watch?v=6hDK9QdK2ok

Pap

The Back to the Future Trilogy got a lot of things right about what 2015 looks like.

igotid88

https://www.youtube.com/watch?v=-yu_zVre0k4&feature=youtu.be

Pap

Digital Tools to Cope with Extreme Weather

Pap

Not related to 3D printing but relevant to the dog videos above:

https://www.youtube.com/watch?v=uUrBIwKzx70

igotid88

http://futurism.stfi.re/videos/worlds-first-3d-printed-car?sf=gkwxnd

eeriepadave

So is this how the PJ crates were made? 3D printers?

ehbacon

I've used a 3D printer in my engineering design class, very cool. Made a couple of guitar picks and some parts for a toy car. Nice picks too

Pap

Britain’s highest profile and most significant infrastructure project the Crossrail will have some incredibly distinct stations upon completion, courtesy of Laing O’Rourke. The Elizabeth line stations, which Laing O’Rourke has constructed, feature curved concrete panels that line the roof and glide around corners in a way never seen before in a large scale infrastructure project.

But this is not the 3D printed concrete featured in viral Facebook videos claiming to build a house in Dubai in just a matter of hours. No, such concrete is simply too structurally weak to ever be considered for use in a project such as the Crossrail. Rather, Laing O’Rourke 3D printed the moulds that would be used to create the precast concrete panels that line the station. By 3D printing the moulds Laing O’Rourke was able to create a stunning structure, which still retains the structural integrity of traditional concrete panels.

Over the course of three years of experimenting James Gardiner, the Australian architect who invented this 3D printing method, was able to perfect the process of printing curved wax moulds that could then be used to hold and set precast concrete panels.

Now, in a factory 16km south of Doncaster, England, a robotic arm roams like a bird of prey over a platform where it will use a hard, pink wax to construct a mould. The arm is attached to a steel gantry which moves it in three dimensions across a space of 30 metres long by 3.5 metres wide by 1.5 metres deep.

https://www.youtube.com/watch?v=alAHME_A8VY

FreeFab has made it cheaper and faster to manufacture more complex precast moulds (not to mention better for the environment). Using traditional methods to construct a mould that curves along two different axis, like the ones that in the Crossrail stations, would take around eight days. FreeFAB can print one of these moulds in as little as three hours.

Given the extra costs in producing curved moulds using traditional methods, it was simply not feasible to use curved concrete in infrastructure, commercial or residential projects.

Furthermore, traditional moulds are typically made from wood and polystyrene, which is thrown out when the mould is no longer required. With the FreeFAB method, the wax mould is simply melted down to be reused when the mould is no longer needed. In a project like the Crossrail stations where Laing O’Rourke was using 1,400 unique moulds to cast 36,000 different concrete shapes, this reusability means significant reductions to the bottom line and also the environmental impact of the project.

These huge stations will open to the public next December representing the first time a large-scale project has utilised 3D printing in their concrete structures.

igotid88

3D printed guns are becoming an issue

igotid88

https://twitter.com/mashable/status/1026687377169887232?s=19

Pap

Unbelievable!

igotid88

https://www.wired.com/story/hps-3d-printers-build-items-of-steel/?mbid=social_fb

igotid88

https://www.pbs.org/wgbh/nova/article/3d-woven-synthetic-cartilage-could-help-your-knees-replace-themselves/?utm_source=FBPAGE&utm_medium=social&utm_term=20181205&utm_content=1954489294&utm_campaign=NOVA+Next&linkId=60573682

PJ_Soul

I have purchased a 3D Pen for my niece for Christmas! I'm really looking forward to trying it out, lol.

It's like this... except I suspect you'd have to practice 500 hours with it to make something like that, lol. From what I can tell, learning to use it effectively takes some patience. I hope my niece has that much patience.

tempo_n_groove

PJ_Soul said:

I have purchased a 3D Pen for my niece for Christmas! I'm really looking forward to trying it out, lol.

It's like this... except I suspect you'd have to practice 500 hours with it to make something like that, lol. From what I can tell, learning to use it effectively takes some patience. I hope my niece has that much patience.

So it's a tiny die grinder that's used on a piece of plastic?

PJ_Soul

tempo_n_groove said:

PJ_Soul said:

I have purchased a 3D Pen for my niece for Christmas! I'm really looking forward to trying it out, lol.

It's like this... except I suspect you'd have to practice 500 hours with it to make something like that, lol. From what I can tell, learning to use it effectively takes some patience. I hope my niece has that much patience.

So it's a tiny die grinder that's used on a piece of plastic?

I don't know what a die grinder is, but that doesn't sound right. It's like a glue gun that melts and expels plastic 3D printer filament that solidifies instantly instead of glue. And obviously with a finer point.

Meltdown99

PJ_Soul said:

tempo_n_groove said:

PJ_Soul said:

I have purchased a 3D Pen for my niece for Christmas! I'm really looking forward to trying it out, lol.

It's like this... except I suspect you'd have to practice 500 hours with it to make something like that, lol. From what I can tell, learning to use it effectively takes some patience. I hope my niece has that much patience.

So it's a tiny die grinder that's used on a piece of plastic?

I don't know what a die grinder is, but that doesn't sound right. It's like a glue gun that melts and expels plastic 3D printer filament that solidifies instantly instead of glue. And obviously with a finer point.

So that pen, made that?  I will confess, I have not paid much attention to 3D printing.  

tempo_n_groove

PJ_Soul said:

tempo_n_groove said:

PJ_Soul said:

I have purchased a 3D Pen for my niece for Christmas! I'm really looking forward to trying it out, lol.

It's like this... except I suspect you'd have to practice 500 hours with it to make something like that, lol. From what I can tell, learning to use it effectively takes some patience. I hope my niece has that much patience.

So it's a tiny die grinder that's used on a piece of plastic?

I don't know what a die grinder is, but that doesn't sound right. It's like a glue gun that melts and expels plastic 3D printer filament that solidifies instantly instead of glue. And obviously with a finer point.

Ahhhhhh, ok.  I get it.

A glue gun is a perfect definition for it then.

How can melted plastic be any good for you to inhale or did they do something different about that?