IDENTIFYING UNMARKED SOLDER

There are plenty of ways to mark your sheet or wire solders, but suppose you forgot to mark them and have a couple that you can't identify. The answer is to compare the melting temperature of the unknowns with that of a known solder.  What I do is take a thick scrap of copper or nickel and arrange several solders on it. Ideally, I would have a sample of easy, medium and hard known solders surrounding the unknown solder. Then I heat the plate from the bottom and watch the order in which the solders melt.

A: Direct casting is a process that does not require procedures and equipment that we generally associate with casting and is an easy way to make organic components you can use in your work.

The most common request we’ve had from members is “more time”. So, the Metal Challenge 2020 kits are now for sale until December 15th, which will let us get the kits out mid January.