Tips for Welding Success

important information, you are strongly urged to obtain appropriate training, and to practice on non-critical test pieces before attempting to weld important items.

3.To begin welding, first observe all safety precautions, then attach the Ground Clamp to the workpiece in such a way as to provide good electrical conductivity between the weld area and the ground clamp. Adjust the Amperage to the correct setting, by turning the Amperage Control Knob (3) and observing the Indicator (24) through the Clear Cover (23).

4.While wearing protective clothing and holding the Electrode Clamp away from con- ducting surface, insert correct electrode (welding rod) into Electrode Clamp, at con- venient angle.

5.Turn the Switch (1) to the correct Voltage, and pause momentarily for the Trans- former (19) to fully charge.

6.Drag the electrode along the workpiece in a motion similar to striking a match. Do not “rap” the electrode on the workpiece as that may damage the electrode by dis- lodging flux and inhibit proper welding performance.

7.Once the arc is ignited, position the electrode at a 30° angle to the workpiece. While working, maintain the arc by holding the electrode away from the workpiece a dis- tance equal to the electrode’s diameter.

8.Proceed at a smooth, steady pace. Observe the weld as you proceed, tempering your motions to achieve a good weld.

1.Good welds depend on the action of an appropriate flux. Do not use welding rods which have a damaged or missing flux coating.

.Experienced welders often use a “weaving” technique. This is a smooth oscillating motion of the electrode during the weld process to evenly disperse the weld puddle throughout the joint. This also results in a repetitive wave-like pattern on the surface of the weld.

3.As you progress, periodically use a “Slag Hammer” and “Scratch Brush” to remove flux and slag deposits on the surface of the weld before the weld is fully cooled. This will help prevent inclusions and pitting in the weld.

4.Strive for an even weld joint that fully penetrates the workpiece, and is completely filled with the pooled welding material. Avoid leaving gaps, undercuts, cavities or excess material overflowing from the joint.

5.Minimize the Heat Affected Zone (HAZ) of your workpiece. The welding process heats the base material, and may adversely affect its tensile strength or state of heat-treatment. Expert welders apply only the amount of heat needed to produce a good weld by moving smoothly along the weld joint, using the correct setting, and applying the electrode efficiently.

6.Do not contaminate joint by using dirty materials or tools, or using slag hammers or scratch brushes which have been previously used on different material. For ex- ample, a scratch brush previously used on steel weld may cause rust contamination if used on stainless steel weld.

Page 13- SKU: 98870

98870 specifications

Harbor Freight Tools consistently brings high-quality, budget-friendly tools to the market, and the model 98870 is no exception. This versatile piece of equipment has become a favorite among DIY enthusiasts and professional tradespeople alike. With its robust construction and intelligent design, the Harbor Freight Tools 98870 stands out as a valuable addition to any toolbox.

One of the main features of the 98870 is its impressive power. Equipped with a reliable electric motor, it provides ample torque and speed, making it suitable for a wide range of tasks, from simple household repairs to more demanding construction work. This capability ensures that users can handle various materials effortlessly, enhancing productivity.

A standout technology incorporated into the 98870 is its variable speed control. This feature allows users to adjust the tool's speed according to the specific requirements of a job. Whether working on delicate components or tackling more robust materials, the ability to control speed ensures precision and greater control over the work being performed.

Another characteristic that makes the Harbor Freight Tools 98870 a top choice is its ergonomic design. The handle is contoured for comfort, reducing user fatigue during extended periods of use. This emphasis on user comfort means that professionals can work more efficiently without the strain commonly associated with prolonged tool usage.

Durability is a critical factor in any tool's performance, and the 98870 does not disappoint. Constructed with high-quality materials, it is designed to withstand heavy use and harsh working conditions, ensuring it remains a reliable option for years to come. Its sturdy build reduces the likelihood of wear and tear, making it a sound investment for any user.

Portability is another important feature of the 98870. It is lightweight and equipped with a compact design, allowing for easy transportation and storage. Users can conveniently carry it to job sites or store it in tight spaces without hassle.

In summary, the Harbor Freight Tools 98870 is a powerful, versatile tool featuring variable speed control, an ergonomic design, and durable construction. These characteristics, combined with its affordability, make it an excellent choice for both DIYers and professionals looking to enhance their tool collection. Whether tackling small projects at home or engaging in larger-scale jobs, the 98870 proves to be a dependable ally in any undertaking.