3. Determine the correct current type, amperage, and polarity for each electrode. Set the proper current for E6010 on the welding machine. 4. Form two T-joints. Tack weld each T-joint three times on each side using E6010 electrodes. 5. A three-pass weld will be made. Clamp the T-joint so the weld can be made in the flat position. Refer to weld passes 1, 2, and 3 in Figure 12-18. 6. Weld the root pass using an E6010 electrode. Obtain penetration into the root. The weld pool should have a C shape at the leading edge. 7. Clean the slag from the first pass and read the weld. Change the current, arc length, or speed as required. 8. Weld a second pass using an E6010 electrode. Obtain good penetration into both the first pass and the base metal. Goodheart-Willcox Publisher Figure 12-18. This fillet weld shows a good example of the sequence a welder should use when making a multiple-pass weld. 1 2 3 4 5 6 Third layer—3 beads Second layer—2 beads First layer— 1 bead Goodheart-Willcox Publisher Figure 12-17. For a single weld bead, or the first weld bead on a multiple-pass fillet weld on thick metal, the electrode is held at a 45° work angle. A 10°–20° drag travel angle is used. 45° work angle 10°–20° drag angle Front view Side view 178 Section 2 Shielded Metal Arc Welding Copyright Goodheart-Willcox Co., Inc.