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Generate radio paper

hey guys a few weeks ago a friend of mine asked me to show him a crystal radio I made which is this one right here I made it many years ago and since then I played around with other variations and even a kit then I looked around YouTube and saw that there was no video that really went through step by step how to make a crystal radio so I figured I'd make one using as much scrap pieces as I could so here's the video hope you enjoy it here's the complete circuit diagram but don't worry you don't have to understand it in order to make this the parts we'll have to make are this capacitor and these two coils so let's start with the capacitor to make the capacitor we need some aluminum foil isn't we're going to cut two 6x6 pieces there we go okay the first piece of foil I simply taped onto the paper towel roll using a masking tape use any kind of tape you want as long it's not electrically conductive tape and I left about a half inch at the bottom here one centimeter for the other piece of aluminum foil cut a seven by seven piece of white paper and tape the aluminum foil onto the middle of it okay there we go next take that piece and tape it so that it's wrapped around paper towel roll make it so it's snug fit but so you can slide up and down fairly easily you want the aluminum side facing out so that the paper is facing in that way the papers between this aluminum piece and the piece that you'd previously take onto the roll also I - it's just that the paper be seven inches by 7 inches and that's because I knew that if it's 7 inches that paper would fit completely around paper towel roll because you want this aluminum insulated from this aluminum next cut a piece of wire about one foot long and a strip about an inch long piece of insulation off one end of it give it a little bit of a 90-degree turn there and tape it to the top corner of the free moving piece of aluminum foil put a few pieces of tape just to make sure they're fairly snug there won't won't move around and then cut another piece of wire the same way and strip it the same way and tape it to the bottom of the piece of foil that doesn't move there we go there's our completed capacitor now I'll show you how to make the two coils okay for the coil I'm going to use this toilet paper all right here I'll make sure you clean it off so you don't get all the toilet paper and glue and stuff this sticking up off it for the wire I've got all kinds of wire here this is magnet wire it's a thin...