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Sure, you could do that but the concrete form tube doesn't have the best finish on it. You would probably want to wrap it in something else that is glossy white if you want to make a more traditional Marshmello helmet. I have seen other designs that use white poster board. Maybe even wrap it with a large piece of EVA foam and paint it white. The form tube makes a good ridged structure but definitely needs to be wrapped.
Thanks for the vote! I have no puns ;-(
Thanks so much!
My guess is a lot more LEDs to cover the surface area of those giant ears! I doubt my kids know who Deadmau5 is. I think they only know Marshmello because there was a skin in Fortnite.
Marshmello LED HelmetView Instructable »
FPV Rover V2.0