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3D printed mirror array

github.com

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Re: 3D printed mirror array

#72

Post by jacquesm »

Turing_Machine wrote: post #62
jacquesm wrote: post #47

Earlier quoted context omitted.

If you're willing to spend a lot of money on silver then probably yes. After all the height differences are substantial and silver isn't cheap. 3D printers resolution sucks in comparison to the mirrors, I'm not sure what you mean by that.

Aluminizing it would be way cheaper than silver. For that matter, you could probably glue down pieces of aluminized mylar rather than using mirrors, since you all you need is a spot of light, not a full-blown mirror image. Aluminized mylar is pretty cheap!

Bare aluminum would oxidize in a very short time to something dull. It would still reflect light but not quite as good.

Aluminized Mylar would definitely work, but that's not bare aluminum but aluminum with a shiny layer over it to keep it clean.

Very useful stuff, I built huge solar concentrators with it. 1000 suns on an area the size of a poststamp. You can do some pretty crazy stuff with that kind of energy density.

Re: 3D printed mirror array

#73

Post by stavros »

jacquesm wrote: post #69
codazoda wrote: post #67

Earlier quoted context omitted.

Even simple stuff takes me multiple tries. I don’t know how any engineer gets a design right the first time. I can build it in a 3D design app, look all around it, and STILL see something in the prototype that was not obvious in the design.

I just built something I had to get right on the first try because messing it up would be more than a little dangerous. Endless fitting and testing and re-thinking before committing to building it. A little cheating was involved, I built a 1/17th scale test setup to ensure that all the electrical bits would work.

Does it?!

Re: 3D printed mirror array

#76

Post by jacquesm »

stavros wrote: post #73
jacquesm wrote: post #69

Earlier quoted context omitted.

I just built something I had to get right on the first try because messing it up would be more than a little dangerous. Endless fitting and testing and re-thinking before committing to building it. A little cheating was involved, I built a 1/17th scale test setup to ensure that all the electrical bits would work.

Does it?!

Yes, it works. Test rides three days ago, first real trip yesterday, 65 km there and back on a single charge. Write-up one of these days, have to collect all the material.
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