Comment by westurner | Hacker News Reader

Comment by westurner | Hacker News Reader

Parent Full thread

What LEGO brick colors can be made with unbleached biocomposites ("bioplastics") from e.g. soy, hemp, and algae?

/? lego hemp plastic: https://www.google.com/search?q=lego+hemp+plastic

/? stronger and lighter than steel and aluminum [hemp] https://www.google.com/search?q=Stronger+and+lighter+than+st...

And also TIL about /? 2DPA-1 melamine waterproof coating: https://www.google.com/search?q=2DPA-1

Though TBH layers of recycled paper pulp and phenolic resin might work; https://news.ycombinator.com/item?id=36857929 :

> RichLite, Paperlite, and Paperstone make recycled paper outdoor waterproof vert ramps, countertops, siding, and flooring; but not yet roofing FWIU?

... and they're sandable and buffable.

Also FWIU, Hemp Wood is made with a sustainable (organic?) binder (in currently still one factory in KY, USA), which is a different process than High Pressure Injection Molding or 3d printing with organic filament.

Interlocking hempcrete blocks by: JustBiofiber https://www.youtube.com/results?search_query=just+biofiber

"Eco-Friendly Construction Breakthrough: Lego-like Hempcrete Blocks That Don't Require Framing https://www.core77.com/posts/91260/Eco-Friendly-Construction... :

> The benefits of the hempcrete bricks is that they're lightweight (easier to transport), fireproof, serve as natural insulators that also regulate moisture, and they're eco-friendly--hemp plants lock up C02 as they grow. [Carbon sequestion, Nitrogen fixation]

> The downside of hempcrete bricks is that they were not load-bearing, and could only be installed with a framed structure, as shown below. [...]

> However, Canadian company JustBioFiber has managed to eliminate that downside, while also adding an innovation that makes the bricks even easier to assemble into a structure. What they've done is to integrate a proprietary structure hidden within each brick itself, so that they can actually function as load-bearing. "We can currently build 3-4 story buildings, with each project having 3rd party structural engineering signoff," the company claims.

Rounded radial block dimensions would be helpful; round homes (and siloes) minimize wind shearing force.

LEGO Bricktales does 3D CAD with Design Verification with Simulation; build a bridge and test it out, journey to other worlds, etc. https://www.google.com/search?q=lego+bricktales

Verification and validation > Categories, Aspects: https://en.wikipedia.org/wiki/Verification_and_validation#Ca...

"Algae-based blocks could make for a more sustainable building" (2023) but what about LEGOs? https://news.ycombinator.com/item?id=37693225

Reply on news.ycombinator.com