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I think the living hing is the lasercut part of the plywood that bends without snapping or treatment like steaming.
Compact Dust Collector
It's cheaper. Li-po is ok when the power requirements are low like for most electronics but when moving a person or something as heavy as a car you need a lot of batteries and they cost. E.g. most electric car battery packs cost like 8k. I think the Tesla ones might be more.
Hey, while it met drinking water standards in our tests I wouldn't recommend closing the loop just yet, at least until doing some decent amount of testing. Storing and observing, tasting and smelling can be enough. Same goes with the washing machine stuff. We really need to work on testing more soaps and detergents but I don't have any funding so a lot of that work is behind. My recommendation for the start would be to store the used water in a secondary tank and use it as you would grey water just to be on the safe side. I think that you could easily go from the shower to the washing machine though.Hope this helped.
Measuring turbidity by light intensity
If you get me tickets there I'll help you build it ;)
If the tube is full of sand when you bend it, won't that also help prevent a kink. It might also give the saw some heftyness that you might want.
Underwater Camera Housing for small video camera