How do you keep from getting a fish eye at the end of a TIG weld?

To prevent a fish eye at the end of a TIG weld, it's essential to maintain a consistent arc length and avoid excessive heat input. Ensure proper cleaning of the base metal to eliminate contaminants that could lead to defects. Additionally, controlling the travel speed and using a filler rod that matches the base material can help achieve a smooth finish. Finally, practice good technique by gradually reducing the amperage when nearing the end of the weld to allow the puddle to solidify properly.