Calculator Inputs
Formula Used
The calculator balances deposited weld volume with wire volume:
η is deposition efficiency. Units are converted internally to millimeters.
How to Use This Calculator
- Pick units and a weld type that matches your joint.
- Enter wire diameter and choose a material density.
- Set travel speed based on your comfortable hand motion.
- Enter bead dimensions or fillet leg size for your target.
- Press Calculate and start near the suggested feed value.
- Adjust on the welder for stable arc and good wetting.
Example Data Table
| Scenario | Wire | Weld target | Travel speed | Efficiency | Estimated WFS |
|---|---|---|---|---|---|
| Garden gate bracket | 0.9 mm steel | Fillet leg 3.0 mm | 320 mm/min | 90% | ≈ 2.2 m/min |
| Planter frame corner | 1.0 mm steel | Fillet leg 4.0 mm | 280 mm/min | 90% | ≈ 3.0 m/min |
| Thin sheet patch | 0.030 in steel | Bead 0.20×0.12 in | 14 in/min | 92% | ≈ 110 ipm |
| Aluminum trellis | 1.2 mm aluminum | Bead 6×3 mm | 360 mm/min | 88% | ≈ 3.7 m/min |
Wire Feed and Deposition
Wire feed speed controls how much wire enters the arc each minute. With voltage, it sets deposition rate and heat input, affecting penetration, bead shape, and productivity on the thin sheet, tube, and flat bar common in planters and trellises. Most feeders display inches per minute, and small changes can be noticeable on light gauge work.
Matching Bead Size
This calculator estimates a starting feed value by relating target bead cross‑section to travel speed and an efficiency factor. A larger bead needs more metal, so feed rises. Smaller beads for light garden frames lower the feed to reduce burn‑through, warping, and spatter. For fillets, the leg size is converted to an equivalent area. Efficiency typically falls between 80% and 95% depending on technique and cleanup losses.
Travel Speed Influence
Hand motion matters. Slow travel increases heat and bead width, so the same feed can stack up and crown. Fast travel can underfill or leave cold lap. Use the travel speed field to match your real pace, then tune within a small range while watching toe wetting and arc stability. Keep contact‑tip distance steady so current and arc length stay consistent.
Gas, Material, and Wire
Wire diameter and alloy change current density and arc behavior. Smaller wire reaches usable current at lower feed for thin steel, while larger wire supports thicker brackets and post bases. Shielding gas, base metal conductivity, and joint cleanliness shift the sweet spot, so treat the output as a baseline. Outdoors, maintain adequate gas flow and block wind to protect the puddle.
Dialing In for Garden Projects
For raised‑bed corners, gate hinges, or repaired tools, start with the calculated feed, run a short bead, and inspect penetration and profile. If the arc stubs, increase feed slightly or raise voltage. If it is harsh and flat, lower feed or increase travel. Make a quick test on scrap from the same material and note the settings for repeatable garden fabrication reliably.
FAQs
Q1. What is wire feed speed?
Wire feed speed is the rate the electrode wire is pushed through the gun. It is usually shown as inches per minute. Higher feed generally increases current and deposition, producing a larger bead if voltage and travel speed stay constant.
Q2. How do I choose travel speed?
Use a speed you can hold steadily while maintaining bead shape. Practice on scrap and time a marked distance. Enter that value so the calculator reflects your real hand motion rather than an idealized pace.
Q3. Why does efficiency matter?
Not all wire becomes weld metal. Spatter, starts and stops, and bead cleanup reduce usable deposition. Efficiency lets the estimate stay realistic. Increase it for smooth technique, and reduce it when welding awkward positions or rusty stock.
Q4. Does wire diameter change the result?
Yes. For the same bead target, smaller wire typically needs a different feed and may run at different current ranges. Always confirm your machine’s chart for the wire size and adjust based on arc sound and penetration.
Q5. What if my arc stubs or burns back?
Stubbing often means feed is too low for the chosen voltage, or stickout is too long. Increase feed slightly, shorten stickout, or raise voltage. Also check drive roll tension and liner condition for smooth feeding.
Q6. Can I use this for garden aluminum projects?
You can estimate feed for aluminum, but aluminum wire is soft and sensitive to feeding setup. Use a proper liner and drive rolls, keep the gun cable straight, and validate settings with short test beads before welding critical parts.