xTool S1: Leather Settings, Metal Tumblers, Glass Etching & Free Files – A Buyer's Reality Check

I run procurement for a 12-person sign and award shop. That means I'm the person who gets to explain why the 'cheap' option was never actually cheap, and why a laser setup needs more than a machine. I've tracked every equipment invoice since 2019, built a cost spreadsheet for this purchase, and argued with the owner about buying a fire extinguisher. If you're comparing an xTool S1 for a small shop, these are the questions I would ask first.

What xTool S1 leather engraving settings actually worked for us?

I'll be honest: 'leather' is not one material. Two same-looking hides from the same supplier can behave differently. That is why anyone who gives you one magic setting is oversimplifying it. What works is a test grid.

On our xTool S1 with the 20W module, 2 to 3 mm vegetable-tanned leather engraved cleanly around 80% power and a speed of about 35% of maximum in the xTool software. Air assist on. If the edge looked burnt, we lowered power by 5%. If the mark was too light, we slowed down instead of raising power above 90%. That gave us more control than just cranking the wattage.

I didn't always test first. After the third surprise failure, I built a material log sheet. Now every new material gets a 15-minute test before it goes anywhere near an order.

Is the xTool S1 20W laser cutter enough for a small business?

For certain small-batch work, yes. We use ours for 3 mm birch, 3 mm acrylic, leather, and coated tumblers. It is not a replacement for a high-volume production laser. If your core job is cutting thick acrylic all day or marking bare stainless, this is the wrong tool.

The cost question I care about is run time per order. A 20W diode engraves at a different pace than a larger machine. I compare laser time plus finishing time per unit before pricing a job. For short runs and custom one-offs, that trade-off works in our favor. For a 300-piece order, we quote with a different process.

Is the xTool S1 a laser engraving machine for metal tumblers?

It can mark the kind of tumblers most customers bring to us, but there is a catch. Most promotional tumblers are powder-coated stainless. The xTool S1 laser removes or changes the coating and leaves a permanent mark. That is what people mean when they say 'metal tumbler engraving.'

Bare polished stainless is another story. A standard blue diode laser will not mark it without an added coating or a different laser source. If you see an ad that says 'engraves metal' but doesn't mention coated metal, ask for the details. That is a red flag. Per FTC guidelines, product claims need to be truthful and substantiated (ftc.gov).

Does diode laser glass etching actually work on glassware?

Yes for frosted marks, not for deep carving. We use ours for glass awards, jars, and the occasional wine glass. The trick is keeping heat under control. If the glass gets too hot, you will get micro-cracks or a complete crack after it cools. Someone told me to keep power lower and test on a scrap jar first. I thought that was overkill. Then I watched a hairline crack run through a glass award after the laser passed. I believed it after that.

Bottom line: use low power, test on the same style of glass, and let the piece cool slowly. Don't sell 'deep etched crystal' work if you only tested a frosted logo on a mason jar.

Where can I find laser engraving free files worth using?

Free files are like free samples: some are great, some are just bait. The fastest source for us has been the design library built into xTool Creative Space, because those files are tested for the machine and we can check their license terms before we sell finished pieces. For other file types, we search sites like Design Bundles, Creative Fabrica, Thingiverse, and Printables, but we always check whether the designer allows commercial use. 'Free to download' and 'free to sell output' are different things.

From a cost perspective, a clean $12 commercial-use file is cheaper than a free SVG that wastes 30 minutes of prep and another bad test cut. I factor that into our job costs.

Which xTool S1 accessories are worth buying upfront?

Air assist is close to a no-brainer if you want consistent cuts and cleaner edges. I skipped it to keep the first order smaller. Our first batch of birch looked like someone oversprayed it with smoke. I bought the air assist two weeks later anyway.

The rotary attachment is also worth it if you plan to do tumblers or glasses. We tried flat-position engraving on a tumbler once and the logo distorted near the curve. The rotary solves that. A honeycomb bed, basic enclosure, and ventilation are not optional extras in my book. They are part of the total cost. And if you expect to cut thicker wood regularly, the 40W version was probably the right call from day one.

What did the full xTool S1 setup cost us after all the 'extras'?

In Q2 2024, when I calculated the total cost for the S1 20W as a production tool, the base machine was only part of the budget. After enclosure, air assist, rotary, extraction, materials for tests, a fire extinguisher, and spare lenses, the project cost was roughly 70% more than the machine price alone. That didn't make it a bad purchase. It just meant the line item on day one was not the real cost.

If you're asking finance for a laser, ask for that bigger number. A shop that only approves the base price will either end up with a machine that isn't set up safely or come back later for a budget increase. Neither is a fun conversation.

These are our settings and costs as of January 2025. Yours will differ by machine version, material batch, and local shop requirements. Run the test, track the cost, and don't skip the fire extinguisher.