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Is it possible to make a backlight for an iPad sized slab of resin?

submitted by obscenity to AskUpgoat 3.9 yearsAug 4, 2021 17:13:06 ago (+5/-0)     (AskUpgoat)

I want to cover it with a stencil so it creates light up text. my plan is to embed the LEDs and a 3 volt battery inside the resin so it's a very slim tablet.

But I don't think regular LEDs will diffuse the light very well. Any suggestion on how I can get the entire slab to light up evenly?

Short of any 🙄bright ideas Im just going to mix baby powder into the resin and see if that will diffuse the light enough. What do you think?


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[ - ] whostolemyusername 4 points 3.9 yearsAug 4, 2021 17:17:41 ago (+4/-0)

Color changing led strips are super cheap, You could use a whole roll and have them very close together, You can get pigments which will likely work better than baby powder.

[ - ] theBreadSultan 2 points 3.9 yearsAug 4, 2021 17:36:39 ago (+2/-0)

Tv's achieve this with edge lighting.

Bit of perspex, led on the edges...

Be mindful of lights interference

[ - ] AloisH 0 points 3.9 yearsAug 6, 2021 04:54:20 ago (+0/-0)

Please post pics when you are done. Also why?

[ - ] bosunmoon 1 point 3.9 yearsAug 4, 2021 19:05:52 ago (+2/-1)

Yes. Stop being a retard and do it.

[ - ] Steelerfish 0 points 3.9 yearsAug 4, 2021 19:13:47 ago (+0/-0)

What kind of resin?

Clear casting epoxy resin has different properties than a clear polyester resin, such as surfboard resin..

There are uv reactive pigments that can be mixed in making it glow relatively evenly….

[ - ] Not_C 0 points 3.9 yearsAug 4, 2021 18:27:40 ago (+0/-0)

I'd say to just scratch up the resin with a high grit sandpaper. That will diffuse the light quite a lot.