A fabricator is using plasma arc cutting to produce parts from 10 mm aluminum plate. They notice that the cut quality is poor, with a large amount of dross adhering to the bottom edge of the cut, and the cutting speed is slower than expected. What adjustment should they make first?

Question: A fabricator is using plasma arc cutting to produce parts from 10 mm aluminum plate. They notice that the cut quality is poor, with a large amount of dross adhering to the bottom edge of the cut, and the cutting speed is slower than expected. What adjustment should they make first?

Answer options:

• Decrease the amperage setting. ✅ Increase the travel speed.
• Increase the standoff distance.
• Switch to a smaller nozzle orifice.

Correct answer: Increase the travel speed.

Explanation: Excessive dross and slow cutting speed often indicate that the travel speed is too slow for the amperage and material thickness, allowing the molten metal to solidify and adhere to the cut. Increasing travel speed will help to blow the molten metal away before it solidifies. Decreasing amperage would make the problem worse, and increasing standoff distance generally degrades cut quality.