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While 3D printers and great and there's fantastic possibilities for their use ahead, I have a hard time seeing the printing of entire houses as one. We already

While 3D printers and great and there's fantastic possibilities for their use ahead, I have a hard time seeing the printing of entire houses as one. We already have great modular, mass-producable and cheap elements for assembling houses: Bricks and concrete slabs. It's possible to assemble the basic structure of a house in days with prefabricated elements. Where I do see a need for 3D printers are in products that aren't mass producable, items that need special fitting, items with a unique design.

ibisum 12y ago
Prefab is labor and gas intensive. The advantage to this technology is that you can do all the assembly in place and don't need trucking and all the other headaches to get stuff there. As a tool for building dwellings in remote places, I think this tech has a bright future .. I can see it being used to rapidly build refugee homes in deserts and so on..
- emiliobumachar 12y ago
  You'd still need to move around the input materials to the printer. I fail to see how it would be less gas intensive. I agree about labor though.
  - hazz 12y ago
    One advantage might be that you could have all the materials delivered in one go from a single supplier (a concrete manufacturer), instead of having multiple deliveries from different places for the different materials (brick, concrete, cement, rebar, etc).
    - saalweachter 12y ago
      Prefab houses already largely solve this problem. All materials are delivered to the prefab factory, in bulk, the prefab house is assembled complete in about a week (including internal finish), and the house is delivered in a single delivery. If you locate your prefab factories along convenient bulk shipping routes (railroads, rivers, canals) and order houses from the closest factory, you've reduced your shipping costs considerably.
      - calgoo 12y ago
        the problem is that prefab houses are not very hurricane / tornado proof. A good cement printed house could be made to withstand a lot better conditions. I think this is something very important for the future. I do really like this idea. I believe something like this, with some prefab parts that are automatically mounted could really get us one step closer to something like what Jacque Fresco envisioned http://en.wikipedia.org/wiki/Jacque_Fresco http://en.wikipedia.org/wiki/Jacque_Fresco. I especially like his automated building tech which could combine prefab with foundations etc being built by a machine like this. http://thevenusproject.com/technology/construction http://thevenusproject.com/technology/construction
        deleted 12y ago
        [deleted]
        maxerickson 12y ago
        There are shoddy prefab homes and good prefab homes and shoddy custom builds and good custom builds. This manufacturer says No Manufactured Home built to the new Florida Building Codes implemented in 1999 went down in any of the hurricanes of 2004-2005. http://www.leecorpinc.com/leecorp-faqs.htm#9 http://www.leecorpinc.com/leecorp-faqs.htm#9 That's just the first interesting link I found searching on "hurricane double wide", and of course it is promotional, but what is important is whether the building is built to stand up to the storm.
- asuffield 12y ago
  I worked for a construction company once, and spending some time on site while buildings are going up makes a couple of things very clear: Walls are easy, cheap, and extremely fast to build. Almost all the effort in construction goes into putting the fittings into the rooms. There are interesting things you could do with 3d-printed concrete, like creating complex structures on-spec, but labour-saving just isn't going to be one of them - the labour costs of brick walls are minimal. It's the plumbing and electrics that get you every time.
  - AlexanderDhoore 12y ago
    I don't see a problem with printing plumbing. Just switch from concrete to PVC for the tubes. Electric wires might be a bit tricky to "print". But I can imagine a machine that inserts the wires into the right places... One day, you'll print a house with curtains and wooden floor included.
    - asuffield 12y ago
      If you could build a 3d printer that could lay down PVC pipes to heating/hot-water spec, that would revolutionise construction in the way that a concrete printer seems unlikely to do. If you could do walls/floors/plumbing/electrics in one machine in one pass, it would change the world in ways that are hard to imagine - this would completely change the economics of construction projects. Nobody's done those yet, sadly. They seem difficult things to design.
      - mathgladiator 12y ago
        Yet is the key word.
    - klunger 12y ago
      While it might be possible to print PVC pipes that are waterproof at the same level of reliability as traditionally manufactured ones, this seems rather overly optimistic. Bringing in pre-made pipes will probably be required for quite some time, before the printing technology is reliable enough for that.
- gav 12y ago
  You can use insulated concrete forms[1] blocks. I've helped a friend build a house this way, it's like putting together lego blocks. [1] https://en.wikipedia.org/wiki/Insulating_concrete_form https://en.wikipedia.org/wiki/Insulating_concrete_form
runeks 12y ago
How do you know this method isn't more efficient without looking at prices? It might be especially relevant in countries where a large part of the cost of building a new house is labor costs. For my part, I can't tell if this new method is more efficient without this team selling or leasing their printer, so we can know how much it costs to build a house with their machine vs laying bricks manually (for various countries).
Zigurd 12y ago
He has a decent shot at this being less expensive than prefab panels/modules, or even conventional poured concrete construction which requires building and removing forms. There are several factors that could throw that off, though: How to do headers, thermal properties, plumbing and wiring, etc. At a steady pace, he's still years away from selling a house to anyone not able to sustain a total loss if Bad Things happen.
WalterBright 12y ago
The article mentioned rebar, but I didn't see any rebar in the photos or video. A significant concrete structure is going to need rebar.

ibisum 12y ago

Prefab is labor and gas intensive. The advantage to this technology is that you can do all the assembly in place and don't need trucking and all the other headaches to get stuff there. As a tool for building dwellings in remote places, I think this tech has a bright future .. I can see it being used to rapidly build refugee homes in deserts and so on..

emiliobumachar 12y ago
You'd still need to move around the input materials to the printer. I fail to see how it would be less gas intensive. I agree about labor though.
- hazz 12y ago
  One advantage might be that you could have all the materials delivered in one go from a single supplier (a concrete manufacturer), instead of having multiple deliveries from different places for the different materials (brick, concrete, cement, rebar, etc).
  - saalweachter 12y ago
    Prefab houses already largely solve this problem. All materials are delivered to the prefab factory, in bulk, the prefab house is assembled complete in about a week (including internal finish), and the house is delivered in a single delivery. If you locate your prefab factories along convenient bulk shipping routes (railroads, rivers, canals) and order houses from the closest factory, you've reduced your shipping costs considerably.
    - calgoo 12y ago
      the problem is that prefab houses are not very hurricane / tornado proof. A good cement printed house could be made to withstand a lot better conditions. I think this is something very important for the future. I do really like this idea. I believe something like this, with some prefab parts that are automatically mounted could really get us one step closer to something like what Jacque Fresco envisioned http://en.wikipedia.org/wiki/Jacque_Fresco http://en.wikipedia.org/wiki/Jacque_Fresco. I especially like his automated building tech which could combine prefab with foundations etc being built by a machine like this. http://thevenusproject.com/technology/construction http://thevenusproject.com/technology/construction
      - deleted 12y ago
        [deleted]
      - maxerickson 12y ago
        There are shoddy prefab homes and good prefab homes and shoddy custom builds and good custom builds. This manufacturer says No Manufactured Home built to the new Florida Building Codes implemented in 1999 went down in any of the hurricanes of 2004-2005. http://www.leecorpinc.com/leecorp-faqs.htm#9 http://www.leecorpinc.com/leecorp-faqs.htm#9 That's just the first interesting link I found searching on "hurricane double wide", and of course it is promotional, but what is important is whether the building is built to stand up to the storm.
asuffield 12y ago
I worked for a construction company once, and spending some time on site while buildings are going up makes a couple of things very clear: Walls are easy, cheap, and extremely fast to build. Almost all the effort in construction goes into putting the fittings into the rooms. There are interesting things you could do with 3d-printed concrete, like creating complex structures on-spec, but labour-saving just isn't going to be one of them - the labour costs of brick walls are minimal. It's the plumbing and electrics that get you every time.
- AlexanderDhoore 12y ago
  I don't see a problem with printing plumbing. Just switch from concrete to PVC for the tubes. Electric wires might be a bit tricky to "print". But I can imagine a machine that inserts the wires into the right places... One day, you'll print a house with curtains and wooden floor included.
  - asuffield 12y ago
    If you could build a 3d printer that could lay down PVC pipes to heating/hot-water spec, that would revolutionise construction in the way that a concrete printer seems unlikely to do. If you could do walls/floors/plumbing/electrics in one machine in one pass, it would change the world in ways that are hard to imagine - this would completely change the economics of construction projects. Nobody's done those yet, sadly. They seem difficult things to design.
    - mathgladiator 12y ago
      Yet is the key word.
  - klunger 12y ago
    While it might be possible to print PVC pipes that are waterproof at the same level of reliability as traditionally manufactured ones, this seems rather overly optimistic. Bringing in pre-made pipes will probably be required for quite some time, before the printing technology is reliable enough for that.
gav 12y ago
You can use insulated concrete forms[1] blocks. I've helped a friend build a house this way, it's like putting together lego blocks. [1] https://en.wikipedia.org/wiki/Insulating_concrete_form https://en.wikipedia.org/wiki/Insulating_concrete_form

runeks 12y ago

How do you know this method isn't more efficient without looking at prices? It might be especially relevant in countries where a large part of the cost of building a new house is labor costs. For my part, I can't tell if this new method is more efficient without this team selling or leasing their printer, so we can know how much it costs to build a house with their machine vs laying bricks manually (for various countries).

Zigurd 12y ago

He has a decent shot at this being less expensive than prefab panels/modules, or even conventional poured concrete construction which requires building and removing forms. There are several factors that could throw that off, though: How to do headers, thermal properties, plumbing and wiring, etc. At a steady pace, he's still years away from selling a house to anyone not able to sustain a total loss if Bad Things happen.

WalterBright 12y ago

The article mentioned rebar, but I didn't see any rebar in the photos or video. A significant concrete structure is going to need rebar.