Apprentice answer

How do I correctly use a duct stretcher without bending the drive

1st YearHand Tools, Fasteners & HardwareCheck first

1. Hook the feet of the duct stretcher over the raw end-flanges of the two unjoined rectangular ducts. 2. Slowly pull the lever down to draw the two sections together tightly. 3. Make sure the ducts are aligned perfectly straight before hammer-tapping the drive cleat over the joint. If the stretcher pulls unevenly, it will warp the metal edge, and the drive won't slide on.

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Plain-English answer

Field checklist

Hook the feet of the duct stretcher over the raw end-flanges of the two unjoined rectangular ducts.
Slowly pull the lever down to draw the two sections together tightly.
Make sure the ducts are aligned perfectly straight before hammer-tapping the drive cleat over the joint. If the stretcher pulls unevenly, it will warp the metal edge, and the drive...

Ask Foreman

Hey boss, I’m checking hand tools & safety: How do I correctly use a duct stretcher without bending the drive? I found the likely issue and want to verify the next step before I lock it in. Do you want me to adjust it now or check the drawing/detail first?

Verify before acting

Use this as training guidance. The foreman, approved drawings, project specs, manufacturer installation instructions, employer safety policy, and AHJ/code requirements always control the final answer.

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