Who This Is For
If you're setting up an xtool F1 Ultra for the first time—or you've already made a few mistakes and want to stop making them—this checklist is for you. I'm an operations lead who handles custom engraving orders. I've personally made (and documented) a dozen significant mistakes in the last two and a half years, totaling roughly $4,800 in wasted materials and rework. This 4-step pre-check is the system I now use to keep those losses from happening again.
This isn't a general guide. It's a specific sequence of checks I run before every single job involving wood—whether it's deep engraving, cutting out patterns, or just surface marking. It takes about 10 minutes. It has saved me from at least a dozen failed projects. Let's get into it.
Step 1: Choose Your Laser Type
This is the most common mistake I see. The xtool F1 Ultra has two lasers: a 20W fiber laser and a 20W diode laser. They are not interchangeable for wood work.
Use the diode laser for wood. Always. The fiber laser is fantastic for metal and some plastics, but on wood, it produces a burned, inconsistent mark. I learned this the hard way in my first month. I used the fiber laser on a piece of maple, thinking 'more power, better result.' The result was a charred mess. That mistake cost me a $40 piece of hardwood and about 3 hours of setup time.
Here's the check: Before you load your file, look at the lens cap. The diode laser has a distinctive blue-purple glow. If you see a red dot, you're on the fiber laser. Switch it. Or, in the software (LightBurn or XCS), ensure the 'Laser' dropdown is set to 'Diode (20W)'. I triple-check this now. I'm not 100% sure, but I might have mixed up the interface once and ran a fiber job on a piece of acrylic, which just melted.
Step 2: The 'Wood for Laser Engraver' Test
Not all wood is created equal. I once ordered 50 units of a custom design for a client. I used a beautiful piece of cherry, pre-sanded, ready to go. The result came back with a fuzzy, low-contrast engraving. The issue? The wood had a high resin content, which the laser vaporized unevenly.
I've since developed a simple test. Before you engrave your final piece, cut a small 1-inch square on a scrap piece from the exact same board. Use your intended power and speed settings. Then, run a small 'fill' test (a 1-inch solid square). Check for:
- Contrast: Is the engraving dark enough against the raw wood? If it's light, you may need to slow down the speed or increase power by 5-10%.
- Burning: Is there excessive charring or smoke marks? This means the wood is too oily or your air assist isn't strong enough.
- Depth: For deep engraving, can you feel a groove? If it's just surface-level, you might need more passes.
The upside of this test is it saves you from ruining the final piece. The risk is it takes 2 extra minutes. I kept asking myself: is 2 minutes worth potentially losing a $45 piece of wood? The answer is always yes.
Step 3: The 'Laser Cut Out Patterns' Check
This is the step I see everyone skip. You designed a perfect pattern in your software. You've set the laser type. You've done the wood test. You hit 'Start'. Three minutes in, the laser is cutting fine. Then it hits a knot in the wood. The knot is denser, so the laser slows down, the power output changes, and your cut line goes from crisp to jagged.
Before you cut any pattern, do a 'vector preview' run. On the xtool F1 Ultra, this is done by using the 'Frame' function. It draws a low-power outline of your design on the material. This does two things:
- Verifies placement: Is your design centered? Within the material's boundaries? I once approved a design that was half an inch off-center. The frame showed me immediately. Caught it before any damage.
- Reveals problem areas: If the frame line touches a knot, a nail head, or a grain defect, you'll see it. You can then stop, adjust your design, or reposition the wood.
So glad I do this step now. Almost skipped it on a $200 mahogany order, which would have been a complete loss.
Step 4: Verify Your 'Deep Engraving' Settings
If you're doing 'xtool f1 ultra deep engraving', meaning you want a noticeable groove, the standard power/speed settings aren't enough. I tried to deep engrave a logo into a walnut plaque. I used the default 'engrave' setting for the wood. It looked fine on my screen. The result came back as a shallow, barely-there mark. That order was for 30 pieces. I caught the error on the first one, but the $150 in wasted labor and materials was already gone.
Here's the specific thing I check now: the 'Passes' setting. For deep engraving, you generally need 2-4 passes. But you don't want to just increase the number of passes without adjusting the power. If you do, you'll burn the wood.
My formula (for the F1 Ultra's diode laser on medium-density wood):
- 1st pass: 80% power, 3000mm/min speed. This clears out the bulk.
- 2nd pass: 70% power, 3000mm/min speed. This deepens it.
- 3rd pass (if needed): 60% power, 2500mm/min speed. This polishes the bottom.
There's something satisfying about a perfectly deep engraved piece. After struggling with shallow marks for months, finally getting that deep, clean groove is the payoff.
Common Mistakes & Final Notes
Even with this checklist, a few things trip me up. Let me save you the trouble:
- Air assist is critical for wood. Without it, the smoke re-deposits on the material, clouding the engraving. I ignored this for my first three months. My 'mist' engraving was terrible. The clarity improved by about 60% once I turned on the air assist (set to about 15 L/min).
- Don't trust the material profile 100%. The XCS software has built-in profiles for 'Wood'. They are a good starting point, but every wood is different. The test in Step 2 is your friend. That said, I have found the 'Cherry (Default)' profile to be a reliable baseline for most softwoods.
- Clean your lens before every wood job. Resin and smoke build up quickly. A dirty lens reduces power output by up to 20% in my experience. I use a lens cleaning pen (about $10 on Amazon) and it takes 15 seconds. The result is a much more consistent cut.
This checklist has prevented an estimated $1,200 in potential rework over the past 18 months. It's not fancy. It's just the result of making the same mistakes three times before I finally wrote them down. Hopefully, it saves you from making them even once.
