The Sal Ammoniac Bar is an essential soldering accessory used to clean and tin copper soldering iron tips. As the heated tip is rubbed across the block with solder, oxidation and residue are removed while a fresh layer of solder bonds to the copper surface. A properly tinned tip transfers heat more efficiently and produces cleaner, stronger solder joints.

Whether you’re soldering copper roofing, gutters, flashing, or architectural sheet metal, regularly using a sal ammoniac block helps extend tip life and improve soldering performance.

• This product is just the ammonia stone (video shows entire Flux Caddy)
• How to pre-tin a soldering tip:
  Once the soldering iron gets hot enough to melt solder, melt solder against this sal-ammoniac block. Due to the sal-ammoniac bar’s chemical composition, the solder will remain on the bar. Rub the copper tip against the solder on top of the bar and a layer of solder will adhere to the copper tip. This is a useful exercise because a pre-tinned tip makes soldering easier.
• 3″ x 2″ sal-block