The XTool S1 Batch Engraving Checklist: How I Wasted $1,200 on Acrylic and Metal Orders

I’ve been handling laser engraving and cutting orders for small business clients for about five years now. In that time, I’ve personally made (and meticulously documented) a handful of spectacularly expensive mistakes, totaling roughly $1,200 in wasted materials and lost time. The worst ones almost always happened during batch jobs on our XTool S1—when you’re doing 50+ of something, a small error gets multiplied fast.

After the third major rejection in Q1 2024 (a batch of anodized aluminum tags that came out looking… splotchy), I finally sat down and built a formal pre-flight checklist. We’ve caught 31 potential errors with it in the past eight months. This isn’t theory; it’s a battle-tested list of steps I follow before every single batch job now. If you use an XTool S1 for production, this is for you.

Here’s the full 7-step checklist. It looks simple, but I promise, at least one of these steps is something you’re probably skipping.

The XTool S1 Batch Job Pre-Flight Checklist

Step 1: The “Dummy File” Test on Scrap

Do not load your expensive acrylic or metal and hit “start.” Always—always—run a physical test on a scrap piece of the exact same material from the same batch. Why? Material consistency isn’t guaranteed. That “clear cast acrylic” you bought last month might have a slightly different polymer mix than the sheet you got yesterday, affecting engraving depth and cut cleanliness.

I learned this the hard way. I said “I tested it on acrylic.” They (my client) heard “I tested it on this acrylic.” We were using the same words but meaning different things. Discovered this when a 40-piece order of engraved acrylic coasters came out with faint, inconsistent engraving on 15 of them. $240 in material, straight to the recycle bin. The lesson? Your test isn’t valid unless it’s on your actual production material.

Step 2: Verify Your Cut/Engrave Lines Are on Separate Colors

This is the #1 file error. In your design software (like LightBurn or LaserGRBL), cuts and engraves must be assigned to different colored lines with specific power/speed settings. A single misplaced line set to “cut” instead of “engrave” can ruin a piece.

My process gap? I didn’t have a formal layer-check process. It cost me when I was rushing a batch of stainless steel business card blanks. One intricate logo vector was accidentally set to a high-power cut line. It didn’t cut through the metal, but it etched a deep, ugly gouge across 25 cards before I stopped the machine. That error cost $175 in ruined metal plus the embarrassment of explaining it to the client. Now, I visually inspect the layer/color panel before every job.

Step 3: Confirm Material Thickness in the Software

The XTool S1’s autofocus is great, but you must tell the software the exact material thickness. If you’re cutting 3mm acrylic but the software thinks it’s 2mm, the focal point is off. The result? Unclean, melted edges on acrylic instead of a smooth, polished cut.

Here’s a pro tip I stole from the industrial world: Don’t just trust the label on the box. Use calipers to measure a few pieces in your batch. I’ve seen “3mm” acrylic that was actually 2.8mm or 3.2mm. That tiny difference matters for cut quality.

Step 4: Check the “Air Assist” & Exhaust

This seems obvious, but it’s the step everyone ignores after the first time. For cutting acrylic and engraving metal, consistent air assist is non-negotiable. It blows away molten debris, preventing it from re-solidifying on the cut edge (which creates a rough, cloudy finish on acrylic) or interfering with the laser on metal.

Make sure your air pump is on, the hose isn’t kinked, and the nozzle is clear. And for fumes—especially from acrylic—ensure your exhaust vent is working. We’re not just talking about smell; built-up fumes can actually interfere with the laser beam. A quick 30-second check saves a 30-minute cleanup of a smoke-stained workpiece.

Step 5: Do a “Frame” Check

Use the machine’s framing function (where it traces the outline of your job without firing the laser). This confirms your material is positioned correctly and the entire design fits on the workpiece. This is critical for batch jobs where you’ve tiled multiple copies onto a sheet.

I once ordered 50 wooden badges without doing this. The file was positioned slightly off the bed. The frame looked okay at a glance, but the bottom row of designs was partially off the material. Wasted half a sheet of birch plywood. A classic “looks fine on my screen” disaster. Now it’s a non-negotiable step.

Step 6: Start with ONE. Then Check.

After all the checks, run one single piece of your batch. Then take it out, inspect it under good light, and measure it. Check the engraving depth (if applicable), the cleanness of cuts, and the edges.

Is the engraving on metal (like anodized aluminum or coated steel) crisp and uniform? Industry standard tolerance for visual consistency is high—variations noticeable to a trained eye (a Delta E difference above 2-3) can lead to rejections. Is the acrylic cut smooth, or is there melting? Only after this piece passes your quality check do you run the rest of the batch.

Step 7: Document Your Settings (The “Recipe”)

When you get a perfect result, write it down. Create a “recipe” card: Material type, thickness, laser module (20W vs. 40W diode), power %, speed, number of passes, air assist pressure, and even the room’s ambient temperature/humidity if you’re being meticulous.

We didn’t have this system early on. The third time I spent an hour re-calibrating settings for “clear 3mm cast acrylic,” I finally created a spreadsheet. It has saved us dozens of hours. This historical data is gold, especially for materials like metal where settings are finicky.

Common Pitfalls & Final Reality Check

On “Can the XTool S1 cut acrylic?” Yes, absolutely. The 20W and 40W diode modules can cut clear and colored acrylic cleanly, but there are limits. Don’t expect to cut 10mm thick acrylic like a CO2 laser can. Stick to the recommended thicknesses (typically up to 8-10mm for the 40W module, less for the 20W), and always use a test cut to dial in settings.

On engraving metal: The XTool S1 won’t engrave bare steel or aluminum. It works on coated metals (like anodized aluminum, painted metal, or laser-bonded blanks). The laser removes the coating to reveal the metal beneath. If a client asks for engraving on “stainless steel,” you need the right pre-treated material. This was a costly early misunderstanding for me.

Portable doesn’t mean careless. The XTool S1’s desktop form factor is fantastic for workshops, but it’s still a precision tool. Vibration from being on a wobbly table can affect engraving quality in batch jobs. Make sure your setup is stable.

Look, this checklist might seem tedious. But the math is simple: 10 minutes of pre-checks versus $200+ in wasted material and a delayed order. After burning through enough cash, I’ll take the 10 minutes every single time.