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Personally I'm more interested in foam printing, which allows large scale plastic printing of insulated structures. For single story bungalows that should be just fine and transport of the building materials easy. Something like (recycled) PET foam printing should be possible. The printer would be more lightweight than concrete printing too. You could 3D print a clean circumference with PET filament first and then fill in with PET foam. Or you could have tool changing and mill down the irregular foam. And you can recycle the whole 3D print later too.
Can we stop putting plastic everywhere tho
I mean, yeah, agreed in general but this wasn’t plastic.
The article doesn’t really highlight it, just says it in passing, but:
The structure itself is made of mortar, layered like dull-green frosting by a 3D-printing nozzle
So, it’s made of mortar (the stuff that holds bricks together normally).
That's fine but this guy I replied to is talking about printing PET plastic
Foam insulation basically makes any sort of plumbing or electrical installation/renovation a fucking pain in the ass. Especially expanding foam.
Just 3D print the channels in.
Channels for... ? Wiring and plumbing? Not really that viable. Have you ever worked residential electrical renovation?
No? Sorry rather clueless about the practical aspects of that. But for electrical why is it not viable to just have channels you can push cables through? Do you mean because of corners?
Generally I was only thinking of simpler structures though like tiny houses or 1-2 room bungalows so it shouldn't be too complex wiring or plumbing.
When you're renovating a structure, often the existing circuits and piping systems (for which you've suggested channels) must be relocated or modified. Since the channels are created by additive manufacturing, you can't relocate or significantly modify them without cutting them away.
When you fill a space with expanding foam insulation, it fully encapsulates the wiring and piping. Often you can't actually see them anymore and you may not even be able to tell they're there. If you wanted to move something, you have to cut open the foam and dig it out. There will be foam everywhere and it will take hours to get all of the foam off.
It would be much, much, much easier to not use channels and to use the tried-and-true method of evenly spaced studs/compartments and filling the spaces with fiberglass insulation. Foam is such a headache in electrical that my former boss refused to work on new builds and renovations that used it.
Well yeah moving channels would be kinda impossible. I imagine while designing the house you'd plan for the electrical wires and 3D print clean channels you can slide wires or flexible piping through. You could also have extra channels near the floor and in the middle and vertical channels.
This would really only be good for lightweight structures that don't need much load bearing, like tiny houses or RVs or huts or bungalows. Maybe structures on house boats / catamarans.
Instead of renovating, just melt it all down to recycle it and 3D print a new house haha.
Not relevant for an open shelter though.
They’ve reinvented the Pagoda shelter of 1907, but just more expensive and taking longer to install.