Welding stainless steel can be challenging, but following these best practices can help ensure success: Choose the right filler material compatible with the stainless steel being welded. Clean the surfaces to be welded thoroughly, removing any grease, oil or dirt. Use a proper shielding gas mixture, typically a blend of argon and carbon dioxide. Maintain a stable arc and avoid excessive heat input to prevent distortion and warping. Allow the welded joints to cool slowly to minimise the risk of cracking.