🔍 Key Concepts

• Proper tubing preparation before flaring (what must be done so the flare forms correctly and seals) • Effects of burrs left from cutting on fluid flow and sealing surfaces • Difference between working on the inside vs. outside of the tube end

💭 Think About

• Think about what happens to the cut edge of metal tubing after you saw or cut it. What condition is it in, and how could that affect the flare and the seal? • Which step would help prevent damage to the flare tool and ensure a smooth, leak‑free sealing surface inside the tube? • Look at the answers that involve changing the tube’s shape versus cleaning/finishing the cut. Which action is normally done immediately after cutting, and before forming the flare?

✅ Before You Answer

• Identify which option deals with smoothing or cleaning the cut edge rather than deforming it • Ask yourself which option would improve internal fluid flow and sealing by removing sharp edges or obstructions • Eliminate any choice that would distort the tube end or damage the sealing surface before flaring