Introduction: Double Magnet Visor Wiper
I wanted a way to restore vision, when my helmet fogged up, with out taking it off.
I glued magnets to two pices of sponge cloth and put them together, with the visor in between. Now I can clean the inside with out by moving the cloth over the outside.
Adhesion and thickness are not optimal yet, but it works.
This is the link to the helmet thing: https://www.instructables.com/Space-Suit-Inspired-Droplet-Hood/