1. Filling in the Gap Introduction to Welding Copyright © Texas Education Agency, 2012. All rights reserved.

2. 2 Materials 6” piece of 1 inch square tubing Arc-welder 6011 rods Welding hood Welding gloves Angle grinder Water access Copyright © Texas Education Agency, 2012. All rights reserved.

3. 3 Step One Pick end of the tubing Weld a small bead across the width of the tubing Care should be taken not to burn through the wall of the tubing Copyright © Texas Education Agency, 2012. All rights reserved.

4. 4 Step 2 Weld an overlapping bead across the original pass Repeat this process until the gap is completely enclosed Copyright © Texas Education Agency, 2012. All rights reserved.

5. 5 Step 3 Grind off the weld flush with the end of the tubing Copyright © Texas Education Agency, 2012. All rights reserved.

6. 6 Step 4: THE TEST Add water to the open end of your piece of tubing Watch for water penetrating through the welding end If water is visible, repeat the process Copyright © Texas Education Agency, 2012. All rights reserved.