3 links have been added on this idea.
  1. You just need a scaled-down cut-out image of the building from above, then use a guide to follow the shape of the jig – to allow the material to fall in the right place, you could even sell lots of 1-metre square jigs of different shapes of a building, for example, the castle.

  2. This can print a house for 4 grand. But the machine is so expensive that its no use to those who need housing the most.