To add the beer and soda cans have a very nasty epoxy coating on the inside to keep the contents tasting good. And on the outside so the printing can't be removed. Seems a number of years ago they were stripping the printing off the outside of the cans and re printing one of the big dog brands like coke on them and selling them in foreign countries. So about the only way it will come off is by using a wire type brush or abrasive paper.
You also can find aluminum flashing trim in 10 foot coils 4"/6" wide and up at the big box home stores.
Copper and brass foils and embossing sheets can be found at the big box crafts stores.
Most of the larger hobby stores sell K&S shapes,tubing and sheet metal stainless, brass, copper and aluminum they have flat stock from 1/8" wide and up in 12" long pieces.
You can also check any stores that sell scrapbooking materials.
The plastic pick guard material is the same stuff that is used as the engraveble sign and name tag material and a lot cheaper
:clown: