Describe a proper technique for starting and stopping a MIG weld to minimize crater cracking.

Describe a proper technique for starting and stopping a MIG weld to minimize crater cracking.

• A. Start with a long arc to heat the crater and end abruptly.
• B. Start with a short arc to blend into the crater, then gradually reduce current as you finish, or weave into the crater before stopping.
• C. Stop by lifting the torch away quickly and ending out of crater.
• D. End with a high current surge after finishing the last bead.

Answer: (B)