Stick Welding 7018 Vertical – Master The Upward Progression Technique
To master vertical-up welds with 7018 rods, maintain a tight arc length and use a slight “triangular” or “weave” motion to prevent slag entrapment.
Always keep your amperage in the lower-to-middle range of the electrode’s recommended settings to ensure the puddle stays manageable and doesn’t sag.
You’ve likely mastered the flat lap joint, but the moment you move to a vertical surface, gravity suddenly feels like your biggest enemy. If you have been struggling with slag inclusions or a puddle that just won’t stay put, you are not alone.
I want to help you turn those messy vertical welds into clean, structural-grade beads. We are going to break down the mechanics of stick welding 7018 vertical so you can stop fighting the puddle and start controlling it with confidence.
Grab your welding hood and a scrap piece of steel, because we are going to walk through the exact techniques required to keep that molten metal exactly where you want it. This isn’t just about moving the rod; it’s about understanding how the flux interacts with gravity.
Understanding the Physics of Stick Welding 7018 Vertical
When you transition from flat to vertical welding, the biggest change is how gravity acts on the molten pool. With 7018 electrodes, which are known for their heavy slag coverage, that extra mass can easily run down the plate if you aren’t careful.
The key to stick welding 7018 vertical is managing your heat input. If the puddle gets too hot, it becomes thin and fluid, and it will inevitably drip off the joint before it has a chance to solidify.
Think of it as a balance between deposit speed and solidification time. You want to deposit just enough material to build the bead, then move away quickly enough to allow the edges of the weld to freeze before the center slumps.
Setting Your Machine for Success
Before you strike an arc, you need to dial in your welding machine. For vertical-up work, you generally want to run your amperage on the lower end of the manufacturer’s recommended range for that specific rod diameter.
If you are using a standard 1/8-inch 7018 rod, start around 110–115 amps. If you find the rod is sticking or the arc is unstable, bump it up by 5-amp increments. Pro Tip: Using slightly lower heat makes the puddle thicker and less prone to dripping. This gives you a better “shelf” of frozen metal to rest your next bit of weld on.
Executing the Upward Progression Technique
When moving vertically, you should almost always weld upward. Welding downward with 7018 usually leads to the slag running ahead of your arc, which causes trapped impurities and a weak, porous joint.
To weld upward effectively, adopt a slight weave pattern. Many pros prefer a “triangular” weave. You move from one side of the joint to the other, pausing briefly at the toes to ensure good penetration.
- Start at the bottom of the joint.
- Move the rod across the width of the gap.
- Pause at the edge for a split second to let the metal bite in.
- Move quickly across the center to avoid overheating.
- Pause at the opposite edge before repeating the motion.
Managing Arc Length and Rod Angle
Maintaining a tight arc is non-negotiable. If you pull the rod away from the plate, the arc becomes long and erratic, which introduces oxygen into the weld and creates porosity.
Keep the tip of the electrode very close to the puddle—almost touching it. This is often called “burying the rod.” When the flux coating is right against the steel, the arc force helps support the molten metal.
As for the angle, aim for a slight upward tilt (drag angle). A 5- to 10-degree angle pointing upward helps push the arc into the puddle rather than pushing it away, which is essential for consistent penetration.
Troubleshooting Common Vertical Weld Defects
Even with the right technique, you might run into issues. If you see “undercut”—a groove melted into the base metal along the toes of the weld—you are likely lingering too long at the edges or running your heat too high.
If your weld looks lumpy or “ropey,” you might be moving too slowly. Remember, you want to maintain a steady rhythm. If you find that your slag is getting trapped, you need to increase your travel speed across the center of the weave. Safety Check: Always wear your heavy-duty welding gloves and a fire-resistant jacket. Vertical welding tends to throw more sparks downward, right toward your chest and lap, so ensure your PPE is properly secured.
Frequently Asked Questions About Stick Welding 7018 Vertical
Why does my 7018 rod keep sticking when I try to weld vertical?
This usually happens because your amperage is set too low. If the machine isn’t pushing enough current, the rod won’t burn off fast enough to keep up with your movement, causing it to freeze to the plate. Try increasing your heat by 5–10 amps.
Can I use a circular motion instead of a weave?
While some welders use circles, it is generally less effective for 7018 vertical-up welds. The triangular weave is better at “tying in” the sides of the joint, which provides the structural strength you need for vertical applications.
How do I know if I have good penetration?
Look for the “wash-in” at the toes of the weld. If the weld bead flows smoothly into the base metal without a harsh transition line, you have good fusion. If you see a distinct “step” or ledge, your heat might be too low or your travel speed too fast.
Is it easier to use a smaller diameter rod for vertical work?
Yes, absolutely. A 3/32-inch 7018 rod is much easier to manage for vertical-up work than a 1/8-inch rod because it creates a smaller puddle that is easier to control. If you are just starting out, grab a box of 3/32 rods.
Final Thoughts on Improving Your Craft
Mastering the vertical position is a rite of passage for any garage welder. It takes patience, a steady hand, and a lot of practice on scrap metal before you take your skills to a real project.
Don’t get discouraged if your first few attempts look more like a bird’s nest than a structural weld. Even the best welders in the business spent hours burning through scrap to get their technique dialed in.
Keep your rod angle consistent, watch that puddle like a hawk, and focus on those pauses at the edges of your weave. You’ll be laying down rock-solid vertical beads before you know it. Keep practicing, stay safe, and enjoy the process of building something that lasts.
