Fresnel Lens melting pennies is illegal for metal collecting. Pennies made of zinc melt quickly. You can buy zinc pellets as an affordable metal. If you need to copy a key that the hardware store cannot do, this solar method works with most keys for locks.
Thank you to ZeroFossilFuel for the wireless mic.
[ Ссылка ]...
![](https://i.ytimg.com/vi/iMfkgBvQ8ig/maxresdefault.jpg)