How I Stopped Wasting Materials: A Practical Checklist for xTool S1 Beginners

Ever had that sinking feeling when you lift the lid on your xTool S1 and see a scorched mess instead of a clean engrave? I sure have. In the first 3 months, I wasted about $200 worth of material making the same basic mistakes. Things that looked fine on the screen came out blurry, burnt, or completely wrong. This checklist is what I built from those errors. It's not a theory piece. It's the exact 6-step process I run through before every single job now. If you're new to the S1 or just tired of wasting good plywood, this is for you.

Before You Hit 'Start': The 6-Step Pre-Check

I don't have hard data on industry-wide failure rates for laser engraving, but based on my own log of 47 'whoops' moments in the past year, I'd bet at least 30 of them could have been stopped by this simple pre-flight check. It takes 5 minutes. It saves you the cost of a ruined piece and the hour of re-doing the work. Here it is.

Step 1: Verify Your File Type (Don't Assume)

This was my very first and most expensive mistake. I designed a large order in a vector program, exported it, loaded it into XCS (xTool Creative Space), and hit go. The machine ran for 45 minutes and produced a series of disconnected dots. Why? I'd exported as a high-res JPEG, not a vector file. The S1 (and pretty much all laser cutters) needs vector paths for cutting and clean engraving on certain materials. What files do laser cutters use? For cutting and precise line engraving on the xTool S1, you want SVG, DXF, or AI. PNGs and JPGs are fine for raster engraving photos, but they won't give you a clean cut. My rule now: if it's a line or a shape meant to be cut, it's saved as SVG. Full stop.

Checkpoint: Before loading, check your file extension. Is it a vector format? If you aren't sure, run a quick test on a scrap piece first.

Step 2: Test Your Material Settings (This is Non-Negotiable)

The xTool S1 is multi-material capable, which is fantastic. But it also means the settings are wildly different. You can't use the same speed and power for 3mm basswood ply that you use for 3mm acrylic. Can the xTool S1 cut acrylic? Yes, it does a great job, but the settings depend heavily on your module (10W vs 20W vs 40W) and the acrylic type (cast vs extruded). Cast acrylic can be tricky and sometimes leaves a frosted edge. I learned this the hard way on a $45 sheet of clear cast acrylic. I used the extruded acrylic preset. Total waste. The xTool S1 20W cutting thickness is maxed at about 5-8mm for acrylic in a single pass, but you won't know the perfect speed/power for your specific batch unless you test. I always keep a scrap piece of the exact material I'm using and cut a small square or text. This 2-minute test saves 40 minutes of regret.

Checkpoint: Have you run a material test for this specific material type and thickness? If not, don't start the job.

Step 3: Check Your Focus (It's Probably Off)

This sounds basic, but it's the most common error I see with new users. The xTool S1 has a manual focus knob, and you need to set it for the thickness of your material. If you're engraving something super thin like leather or paper, and you forget to adjust the focus from the last job (which was cutting thick wood), your engrave will be blurry and weak. The machine doesn't auto-adjust for you. I once engraved 50 keychains with a soft, blurry image because I forgot to re-focus after switching from a 1/4-inch plank to a 2mm leather sheet. They looked terrible. I had to re-do them, which cost me an afternoon and the material for 50 new keychains. Now, before every single job, I manually check that the z-axis is adjusted. It's a trivial step. The cost of missing it is everything.

Checkpoint: Is the focus set for the thickness of the material currently in the machine? (Adjust the knob until the material is at the correct focal distance.)

Step 4: Inspect Your Air Assist (It's Not Just for Show)

Air assist is critical for cutting acrylic and engraving wood. It blows away debris and reduces charring. Without it, you get uneven cuts, sooty edges, and a lot more fire risk. I was skeptical at first. My S1 came with the air assist bundle, and I thought 'do I really need to use this every time?' Yes. Yes, you do. The difference between cutting 5mm plywood with air assist and without is the difference between a clean, light-brown edge and a dark, burnt, uneven one. If you're cutting acrylic and the flame is struggling or the edge is getting cloudy, check your air assist nozzle is aligned properly. This was a step I ignored for 6 months. Don't be me.

Checkpoint: Is the air assist connected and turned on? Is the nozzle aligned with the laser head and pointed at the cutting line?

Step 5: Inspect the Lens and Mirrors (Dust Kills Quality)

I don't clean my lens as often as I should. I'll admit it. But when I do clean it, the difference is obvious. A smudged lens scatters the laser beam. This means your cut is wider, less powerful, and your engraving is lighter. If you've been engraving glass and it seems less crisp than it used to be, or your cuts are taking longer, clean the lens first. The xTool S1's module has a small lens cover. A quick swab with isopropyl alcohol and a lens cloth before every session makes a huge difference. It's the cheapest fix for declining quality.

Checkpoint: Look at the lens. Is it clean? If not, clean it gently.

Step 6: Verify Your Machine's Physical Setup (The Rotary Check)

This is specific but important. If you are using the rotary bundle for engraving cylindrical objects (like glasses or tumblers), check your setup. I once spent an hour engraving a batch of glasses for a wedding. The result? The engraving was stretched and misaligned. Why? Because I didn't set the correct circumference in XCS. The machine assumes a default size if you don't input it. Each item, like a glass or a bottle, has a different circumference. It's a simple data entry field, and I missed it. The groomsmen glasses looked... wrong. They were a gift, so I couldn't exactly sell them. That was about $100 down the drain plus the embarrassment.

Checkpoint: If using the rotary, have you measured and input the correct circumference of the object? Is the roller stable and the object secure?

What I Learned (The Hard Way)

I wish I had tracked my waste more carefully from the start. I can say anecdotally that by running this 6-step checklist, I cut my scrap rate by about 80%. It won't fix every problem—sometimes the material has a knot, or the power fluctuates—but it stops the most common, preventable errors. The best advice I got from a pro was: 'The machine can do amazing things. But it can't guess what you want. It'll do exactly what you tell it, which is a problem if you didn't tell it the right thing.' Take it from someone who wasted $200 in materials. Spend 5 minutes on this checklist. Your future self will thank you.

Oh, and one more thing: if your engrave on glass seems weak, check your focus. It's almost always the focus.