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3D printed mirror array

github.com

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Re: 3D printed mirror array

#81

Post by dang »

TheRealNGenius wrote: post #42
dang wrote: post #24

Earlier quoted context omitted.

Can you please not post in the flamewar style to HN? We're trying to avoid flamewars here, and I'm sure you can make your substantive points without that. https://news.ycombinator.com/newsguidelines.html

I mean, I don't think the parent post was that substantive either. There is nothing in this submission that necessitates roping in the topic of the metaverse. They could have just left it as they found this tech interesting.

Sure, but there are degrees of these things. The GP comment was generic, which does have a bad effect on discussion (it evokes shallower and often nastier things from others), but the comment I replied to took things a few notches further.

Re: 3D printed mirror array

#82

Post by azinman2 »

This is very cool. Perhaps I'll similarly do a writeup of my nerdy marriage trick -- I created custom 3D chocolate bars with our faces on them to hand out to guests. It required a ton of iteration and a lot of chocolate work (which is really hard!), but was really special in the end.

Re: 3D printed mirror array

#84

Post by jacquesm »

stavros wrote: post #78
jacquesm wrote: post #76

Earlier quoted context omitted.

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.

Excellent.

I've never actually been scared of stuff I built before, that's a first (and that doesn't mean that I shouldn't have been scared with other projects, just that I wasn't either because I wasn't aware they were dangerous or simply too absorbed to stop and think about it).

Re: 3D printed mirror array

#85

Post by enchiridion »

saboot wrote: post #33
mrfusion wrote: post #3

I was going to suggest you could use it as a home decoration to make a message everyday but it would only work one day a year?

You'd need the mirror planes to be adjustable in the XY tilt directions. Seems doable though, would be a cool next project

Or not? That’s an interesting challenge. Multiple messages depending on the light angle

Re: 3D printed mirror array

#87

Post by ruined »

intrasight wrote: post #79

I wonder if rather than "additive" you could do similar with "subtractive" fabrication. Take a wooden board and cnc mill and cut circles on the surface at the appropriate orientations.

generally it's just a matter of slicing the same source STL file to the appropriate gcode, but in this case the particular geometry (lots of sharp concave angles) seems more suited to additive manufacturing.

Re: 3D printed mirror array

#88

Post by TheRealNGenius »

jacquesm wrote: post #50
TheRealNGenius wrote: post #42

Earlier quoted context omitted.

I mean, I don't think the parent post was that substantive either. There is nothing in this submission that necessitates roping in the topic of the metaverse. They could have just left it as they found this tech interesting.

If you can't say something nice about a project like this then say nothing at all. To belittle it is classless.

true

Re: 3D printed mirror array

#89

Post by serf »

intrasight wrote: post #79

I wonder if rather than "additive" you could do similar with "subtractive" fabrication. Take a wooden board and cnc mill and cut circles on the surface at the appropriate orientations.

yes, but it'd require a redesign or very special tooling.

that spacing between each mirror 'pedestal' is fairly deep, it'd require a very long end-mill or a five axis machine to be able to get into those crevices.

it'd be trivial to carve the needed angle into each 'mirror pedestal' , but the current design doesn't support the premise very well.. still, doable.

Re: 3D printed mirror array

#90

Post by jonahx »

diplodocusaur wrote: post #34

There is an artist (at least) that uses arrays of motorized parts to create a similar effect https://www.youtube.com/watch?v=kV8v2GKC8WA mesmerizing

"The electronics and the mechanics and the fabrication took me a year. Then it took me an afternoon to program the computer to actually activate it"
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