I Almost Said No to a 36-Hour xTool S1 Leather Job. Here’s What Actually Mattered

On a Thursday in March 2024, at 5:14 p.m., an event coordinator for a small animal rescue sent me a photo of a scruffy terrier. Then came the sentence I hear more than I like: “We need this engraved on the cover of 12 leather journals by Saturday at 6.” I looked at the xTool S1 on my bench, a box of leather blanks, and the clock. It was basically a 36-hour job by the time I could get to the shop.

I did not say yes right away. I went back and forth for about twenty minutes. The upside was a meaningful project and a fair invoice. The risk was that a photo of a rescue dog would come out looking like a smudge on a donor gift. And if you have never tried it, photo engraving on leather is not like printing. It is a controlled burn, with grain, color, and scan quality all fighting you.

The call I almost declined

The coordinator had already received a quote from another shop. It listed a base engraved journal price, but then added a photo prep fee, a setup fee, and mentioned rush shipping as “extra.” I am not going to name them, but that pattern is a red flag to me. I told her I could do it for $363: $14 for each blank journal cover, $45 for photo prep on the first image, $90 of estimated laser time, and a $60 rush charge. No extra fee for the test panel. If the test failed, I would eat the cost and tell her honestly.

She said, “That’s less than the other place, and I can actually see what I’m paying for.” That is the whole transparency lesson, honestly.

The xTool S1 rotary mistake that made my first test fail

Here is something nobody puts in the marketing: if the xTool S1 rotary attachment is still mounted from your last tumbler job, flat leather has no business running on the same setup. I had shipped powder-coated tumblers the day before and left the rotary on the machine. On that first attempt, the cover lifted at the edges, the focus looked wrong, and the engraved dog had one clear eye and one ghost eye.

I blamed the settings at first. Then I looked at the setup and said, out loud, unfortunately, “the rotary is in the way.” It took about fifteen minutes to remove it and reset the bed. That was the real turning point. The second sample was not perfect, but it was sharp enough to trust.

To be clear, the xTool S1 rotary is a useful attachment. I use mine on tumblers and round flasks. But it is not a magic add-on that makes every job easier. It makes cylindrical work easier. It makes flat leather work a headache if you forget to plan the changeover.

The xTool S1 leather engraving settings that actually mattered

I am wary of people who post one setting as though it is a universal law. The “xTool S1 leather engraving settings” advice that always says “high power, low speed” is an oversimplification. Leather varies by tanning, pigment, thickness, and oil content. The batch I used was unfinished vegetable-tanned cowhide. With the 20W module, a good starting point was around half power, medium-slow speed, and fine line spacing. Air assist on. I made a tiny matrix on a scrap piece: three power levels, three speed levels. The matrix took about twenty minutes. It saved the order.

Without that test, I guarantee I would have overcooked at least one journal cover. Darker finished leather and some topcoats smoke and discolor more easily. On those, I would lower power and raise speed. There is no way around testing.

Photo prep for laser engraving under a deadline

Everyone asks me how to prepare a photo for laser engraving. Usually, they expect me to say, “press the posterize button.” Here is what actually worked on this dog photo, which came from an old phone and was not high resolution.

I cropped it to the same aspect ratio as the cover. I converted it to grayscale and increased contrast slightly, then sharpened it one pass. Then I applied a very small softening step to reduce JPEG noise. The laser does not understand a 4,000-pixel photo. It understands where to leave dark marks and where to leave light leather. Dithering did the rest. I tested ordered dithering first, and it made the fur look mechanical. Diffusion dithering looked closer to a pencil sketch. That was the setting that saved the image.

The customer’s original photo was far from perfect. But perfect source files are rare in rush orders. Knowing how to prepare a photo for laser engraving is more valuable than owning a beautiful machine.

About those “free laser cut files”

Yes, I looked for a free laser cut file to add a paw-print border. There are plenty of places with laser cut files free download, and I have used them for coasters and keychains. But the vector border kept fighting with the photo, and I did not have time to customize paths. Sometimes the fastest file is the one you do not download. Free files are great for backgrounds and prototypes. They are not a shortcut when the emotional centerpiece of a donor gift needs to look right.

The laser marking machine price lesson no one wants to hear

After I posted this project online, a maker messaged me: “What is a good laser marking machine price for laser projects?” That is the wrong first question. What they really meant was: does a diode engraver fit? I run a 20W xTool S1, not a fiber laser. I cannot mark bare aluminum or steel. I can engrave leather, wood, acrylic, coated metal, and some glasses with the right prep. It will not replace a CO₂ laser for deep cutting acrylic in mass quantities either.

The price of a tool is not the total cost of the job. Test materials, ventilation, software, and your own unfamiliarity all have a price. The machine that makes you spend three hours guessing is more expensive than one with a clear setup workflow. Last year, our shop handled 47 rush orders, with 95% on-time delivery. The near misses all had one thing in common: I tried to skip a setup step.

Transparent pricing is not charity, it is just good math

The rescue coordinator added two extra donors after I gave the first quote. Because my quote had separate lines, she knew exactly where the total changed. No one felt tricked. The original quote was not the lowest, but the final invoice matched the estimate. In my experience, that builds more trust than a cheaper base price with eight surprise fees.

“What’s not included?” is the question I ask every vendor now. When someone lists every fee up front, even if the total looks higher, the estimate usually ends up being the real number. That is worth a lot on a deadline.

We delivered at 4:47 p.m. on Saturday, 73 minutes before the event doors opened. The coordinator sent a photo from the gala: one journal sitting on the donation table, the terrier on the cover catching the light. That is when the math finally made sense to me. The job was not saved by a fancy machine. It was saved by testing the leather, prepping the photo honestly, and telling the customer exactly what everything cost before I started.

I learned all this in March 2024. xTool updates software and materials change fast, so verify current settings before your next rush job. And if someone tells you that more watts or a better rotary attachment fixes bad planning, ask them how many 36-hour orders they have actually finished.