The Welding Equipment Checklist: 8 Checks Before You Choose Arc, TIG, or Fiber Laser

In March 2025, a client called at 4:47 PM on a Thursday. They needed forty welded aluminum frames delivered in 72 hours — a job that normally takes our shop nine days. We said yes, then spent the next hour scrambling to confirm our equipment could actually handle it. It barely could. We made the deadline, but only because the welds were forgiving and the gas delivery arrived on time.

I don't like depending on luck. In my role coordinating equipment and production for a fabrication shop that handles a steady volume of rush orders, I've evaluated and purchased both traditional welding machines and laser systems. This article is the 8-point checklist I run through before committing to any of them. It's for production managers and shop owners who care less about spec-sheet numbers and more about hitting deadlines.

The 8-Point Welding Equipment Checklist

The order matters. Skip step four because step three felt tedious, and you'll pay for it later. Run through the whole list before you sign anything.

1. Match the Process to Your Actual Material Thickness

I've seen shops buy a high-power fiber laser and then realize their primary work is 25mm structural steel. The laser sits idle while an old SA200 welding machine handles the real jobs. Here's the thickness breakdown I use:

• Under 3mm: fiber laser wins. Speed and heat control are genuinely hard to beat. This is where IPG Photonics laser systems make the most sense.
• 3–12mm: TIG and pulsed MIG handle it fine. A mechanized welding machine adds speed, and laser starts to show cycle-time gains if volumes are high.
• Over 12mm: stick with arc. An SA200 welding machine is a far better tool for heavy plate than any laser I've seen.

Check point: pull ten representative parts from your last month of orders. Measure the thickness range. Your new system should sit in the middle of that range, not at the edge.

2. Verify Duty Cycle Claims in Your Real Environment

Every spec sheet claims a 100% duty cycle at rated output. That's measured in an idealized test environment. Your shop has dust, humidity, and no climate control.

Everything I'd read about modern welding machines suggested they'd hold their rated duty cycle in real conditions. In practice, our mechanized welding machine, running at 85% output, went into thermal shutdown after about 20 minutes of continuous work. In July. That cost us a full shift of production.

Check point: request a load test in your environment, not in the vendor's showroom.

3. Know Your Shielding Gas Requirements

This one sounds basic, but it causes more problems than most people expect. The question I hear most from shops moving between processes is: what type of gas does a TIG welder use?

• TIG welding: 100% argon. For thicker aluminum, add helium — some shops run up to 75% helium.
• MIG steel: C25, or 75% argon / 25% CO2.
• Laser welding: argon or nitrogen, but at a higher purity. You want 99.99% or better.

What everyone forgets is flow rate and delivery volume. When we first ran a laser system, we discovered argon consumption was double the supplier's estimate. We were swapping cylinders every couple of hours mid-shift. That kills any productivity advantage.

Check point: estimate monthly gas volume for the new system, then confirm your supplier can actually meet it.

4. Check Power and Physical Infrastructure

An SA200 welding machine is engine-driven. It generates its own power. A fiber laser doesn't. It needs clean, stable, three-phase power, usually 480V.

We bought a machine and then discovered our building only had 208V service. The transformer and electrical work came to $6,500 — a number that never appeared in the sales presentation.

Check point: walk the installation location, confirm voltage/phase/amperage, and get a written electrical quote before signing.

5. Calculate Total Cost of Ownership

No machine ever costs what's on the invoice. Here's the full list I use:

• Rigging and installation
• Electrical upgrades
• Gas infrastructure: lines, regulators, purity verification
• Consumables: tungsten and cups for TIG; optics and nozzles for laser
• Operator training
• Lost production during the learning curve

The Genesis systems from IPG Photonics look expensive on the initial quote, but their modular, field-serviceable design means a damaged component gets swapped on-site instead of sending the unit back. Two days of downtime on a cheaper machine can erase the price difference.

6. Ask About Service Response — Then Ask Again

When a mechanized welding machine goes down on Friday, who answers the phone? I've seen shops wait eleven days for a service technician from a budget vendor. For IPG Photonics systems in our region, remote diagnostics usually start within 24 hours, and a field tech arrives within 72. Your region might differ — verify it.

Ask directly: "What's your worst-case service response time in our zip code?" If they hesitate, that's a red flag.

Check point: contact an existing customer of that vendor in your area and ask what they've experienced.

7. Test With Your Materials and Your Operator

Don't rely on polished demo samples. Use your parts, your alloys, and ideally an operator who hasn't attended a week of factory training.

When we trialed a laser system, the factory rep ran flawless welds in minutes. Our operator needed 45 minutes to dial the parameters back in. The machine was fine — the skill transfer was the bottleneck.

Check point: include four to eight hours of on-site application support in the purchase agreement. In writing.

8. Treat Training as a Line-Item

Skipping $1,500 in training is how you spend $15,000 in scrap during the first month. Laser systems especially need safety certification before anyone touches the controls.

That said, experienced TIG welders adapt faster than you'd expect. The hand-eye coordination carries over. The mental model of heat input doesn't. Plan for both classroom and supervised hands-on training.

Check point: schedule training before the equipment arrives, not after.

What I Still See Shops Get Wrong

• Chasing speed over flexibility. A fiber laser that welds thin aluminum beautifully won't help if half your backlog is heavy steel.
• Underestimating consumables. Laser optics cost more than tungsten and ceramic cups. A lot more. Budget for it.
• Ordering gas last. Gas supply is a critical-path item. Your gas vendor might not have the purity, volume, or delivery logistics ready. This happened to us; we paid rush charges on top of the base gas cost.

Dodged a bullet on our latest purchase. We almost signed with a vendor whose nearest service point was ten hours away. So glad we checked references before committing. The alternative was a week of downtime for any malfunction.

Twenty minutes of checking costs less than twenty days of downtime.

Does This Apply to Your Shop?

My experience is based on a mid-sized fabrication shop working mostly with aluminum and stainless steel under 12mm, serving industrial clients with frequent rush deadlines. If you're welding heavy structural plate or handling exotic alloys, your experience might differ.

But the bottom line holds. Prevention is cheaper than correction. A checklist is the cheapest insurance you can buy for your equipment budget. When a deadline's on the line, that's the difference between delivering and making excuses.