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  • Cardboard Spectrometer, Rainbows in Your Pocket

    I agree with you 100%. So many 'DIY' projects require a 3D printer or some other such machine which can still be very inaccessible to a lot of people. It's nice to find a project that everyone can do, not just those who have enough disposable income to buy something like a 3D printer.

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  • greyaria commented on Rajath S's instructable How to Make an Rainbow Bulb3 months ago
    How to Make an Rainbow Bulb

    This is a VERY BAD IDEA. This is a fire hazard. Incandescent lights get very hot and the acrylic paint you're using can melt and/or catch fire. You could easily do the very same project using an LED light instead. Use the type with a plastic housing, and use a lower wattage bulb (example linked below). You could also use permanent markers instead of opaque acrylic paint.https://www.amazon.com/Great-Eagle-Equivalent-Non-dimmable-Replacement/dp/B07KK93VD9/ref=lp_2314207011_1_24?s=hi&ie=UTF8&qid=1559809847&sr=1-24

    This is a VERY BAD IDEA. This is a fire hazard. Incandescent lights get very hot and the acrylic paint you're using can melt and/or catch fire. You could easily do the very same project using an LED light instead. Use the type with a plastic housing, and use a lower wattage bulb. You could also use permanent markers instead of opaque acrylic paint.

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  • greyaria commented on 38ren's instructable Rainbow Body Glitter4 months ago
    Rainbow Body Glitter

    This is fantastic! I love how inexpensive a project this is. I wonder how a metallic powder (like all the iridescent stuff that's really popular these days) would turn out. The biggest hurdle I see is getting the super fine powder to actually mix well with the medium. I think I'm gonna try to do this project myself, and then try using iridescent powder too. Thanks for the amazing idea!! Happy Pride Month!

    Any update on how well this formula wears? Does it rub off easily? How well does it stand up to sweat or water? Any ideas for making this water proof?And how long do you think a batch would last if it was in a sealed container?

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