Have you ever run into this situation? The base metal is unknown, the work piece is painted or rusty or greasy. You must weld out of position in a hard to reach place, and you don't have time to dismantle equipment; the downtime would be extremely expensive.
To make things worse, you also encounter welds that fail or crack next to the weld, or burn-through, maybe even sticking electrodes or hot metal dripping on overhead or vertical welds.
Cronatron is your answer to metal repair for: