Welding with Multi-Etch
We recommend using Multi-Etch heated; it works much faster that way. For setup and instructions, see “How to Use Heated.” Your etch time will depend on how much material you want to remove but 10-90 seconds is the likely range.
If you can’t use Multi-Etch hot for your application, Multi-Etch can be used at room temperature—70°F—using ½ gallon or less DI or distilled water. The entire bath must be heated one time. See “How to Use Unheated.” Initial etch time can vary but will probably be at least 10 minutes, depending on how much material you want to remove. If you reuse etchant until it is spent, etch time will likely need to be increased because the etchant becomes saturated with titanium molecules.
It’s a good idea to test with scrap titanium using the same material as the pieces that will be welded.