My xTool F1 Ultra Checklist: 6 Steps to Avoid Costly Mistakes (From Someone Who's Made Them)

I've been handling production orders for small businesses for about 5 years now. In my first year—2019, I think—I made a $1,200 mistake on a single custom order because I assumed my settings were fine. Checked everything on screen, hit "Engrave," walked away. Came back to a mess.

Since then, I've personally documented 14 significant screw-ups (and a couple that were borderline catastrophic). The xTool F1 Ultra is a powerful machine—dual 20W fiber and diode—but that versatility is exactly where the traps are. You can run metal, wood, glass, acrylic, even do color engraving. And you can ruin all of them if you're not methodical.

So here's the checklist I now use for every single project. It's 6 steps. Follow it literally.

Who This Checklist Is For

This is for anyone who's moved past the "unbox and experiment" phase and needs consistent, repeatable results. If you're doing small-batch production, custom gifts, signage, or prototyping, this will save you materials and redo time.

If you're still in the learning phase, that's fine—but slow down and follow the steps. I wish I had.

Step 1: Verify Your Material Profile (Don't Assume)

This is the mistake I made 3 times before it stuck. The F1 Ultra comes with pre-loaded profiles for some materials, and they're a good starting point. But they are not optimized for your specific batch.

Different suppliers use different coatings, densities, and thicknesses—even for "the same" material. A 3mm birch ply from one supplier might cut fine at 80% power, 100mm/s. From another supplier, you'll get charring at 50% power.

My current process:

• Cut a small test square (1x1 inch) in the corner of your sheet
• Use the material test pattern built into LightBurn to test 9 different power/speed combos
• Inspect the results with a loupe if you have one. The naked eye misses shallow engraves.
• Log the winning settings in a notebook or spreadsheet. I use a simple Google Sheet with columns: Material, Thickness, Power, Speed, Passes, Date, Notes.

Honestly, I'm not sure why the pre-loaded profiles vary so much between batches. My best guess is it's a calibration tolerance thing. Doesn't matter—just test.

Step 2: Focus (Really Focus) Before Every Job

It's tempting to think you can set the focus once and forget it. But material thickness changes, and even a 0.5mm offset will blur the beam.

The F1 Ultra has an auto-focus sensor, which is helpful. But never trust it blindly. I've had jobs fail because the sensor picked up dust or debris. I now do a manual check after the auto-focus cycle:

• Use the included focus tool (the little puck) on a flat area of your material
• If the auto-focus value differs from the manual check by more than 0.2mm, re-run the auto-focus
• For curved surfaces (like glassware), focus on the tallest point or use the rotary—never auto-focus on a curved surface

I once assumed the auto-focus would handle a slightly warped piece of acrylic. The result was a $90 sheet with a 2-inch section out of focus. That was in Q1 2024. I haven't skipped manual focus since.

Step 3: Secure Your Material (Even for Small Jobs)

This might sound basic, but it's the step I see skipped most often. Even a tiny shift during engraving—especially on a fast-moving machine like the F1 Ultra—will smear your design.

For the rotary, this is non-negotiable. The included rotary chuck needs 3-point contact. If your piece is unevenly loaded, it will wobble. I use the following:

• Flat materials: double-sided tape or a honeycomb bed with magnets
• Round objects (glassware, tumblers): make sure the center line is parallel to the Y-axis. A slight tilt will cause the engraving to spiral.
• Small pieces (<30mm): use the clamps provided, but test fire at low power first to make sure nothing shifts

In September 2022, I had a batch of 20 stainless steel tumblers. I assumed they were all uniform diameter. They weren't. The difference was maybe 2mm, but that was enough to throw off the rotary center for 4 of them. That order cost $320 in redo plus a 2-week delay. I now check each piece individually.

Step 4: Optimize for Color Engraving (It's Not Magic)

Color engraving on metal—especially stainless steel—is one of the F1 Ultra's coolest features. But it's not a "set and forget" process. The colors you see in the preview are approximate.

Here's what I've learned:

• The color comes from heat-induced oxidation, not dyes. The same power/frequency combo will produce different colors on different steel alloys.
• Start with a small color test strip. I use a 50x10mm piece of the same material to test 6 different color parameters.
• Document which settings produce which colors. For example, on my machine, 304 stainless gives a gold color at 90% power, 55kHz frequency, 200mm/s.

This gets into materials science territory, which isn't my expertise. I'd recommend consulting the xTool forums or Industry experts for color optimization. What I can tell you from a production perspective is this: color will vary between batches of the same steel type. Always test a sacrificial piece from the same batch before running a job.

Step 5: Run a Dry Cycle Before the Laser Fires

This is the step that has saved me more times than I can count. Before you hit "Start" with the laser on, run a dry cycle:

• In LightBurn, set laser power to 0%
• Run the job and watch the head path
• Check for collisions, overruns, and unexpected movement
• Verify the rotary is turning (if applicable)

I've caught issues like the head crashing into a clamp, the rotary not engaging, and the design exceeding material boundaries. We've caught 47 potential errors using this technique in the past 18 months—I started tracking after I missed one and it cost me $250.

Step 6: The Step Most People Skip—Post-Process Inspection

Everyone checks the first piece. But what about piece #47?

Quality drift is real. The laser power can fluctuate, the material can change, the focus can shift. I now do a spot-check on every 10th piece for runs over 50 units. It takes 2 minutes and has caught issues before they became a full batch redo.

Important Notes & Common Traps

Ventilation

The F1 Ultra comes with a filter system, but if you're running acrylic or certain plastics, the fumes are no joke. I run mine with an external extraction hose to a window. Not a logistics expert, but for health: err on the side of over-ventilation.

Rotary for Non-Cylinders

The rotary tool works well for cylinders and tapered cups. It doesn't work for irregular shapes (like a wine bottle with a heavy punt). For those, you need a different approach or a manual roll fixture.

Glass Engraving

Glass can shatter from thermal shock. The F1 Ultra's diode laser handles it well, but start at 30% power and increase gradually. Keep the workpiece moist (a damp paper towel under it helps). I've never fully understood the exact physics of thermal stress fractures, but I know this reduces them significantly.

Wood Cutting

For cutting thicker wood (over 5mm), multiple passes at lower power produce cleaner edges than one high-power pass. Expect charring on the bottom edge of thicker cuts—it's normal. Sand or plane it off.

Final Thought

The vendor who told me "this machine won't cut 10mm wood cleanly" earned my trust more than the one who said "it cuts everything." The F1 Ultra is a desktop machine with impressive versatility, but it has limits. Knowing those limits is what saves you time, money, and frustration.

Prices as of March 2025 for the xTool F1 Ultra start around $1,600 (verify current pricing on xTool's website). Materials cost varies widely. Budget for test pieces—they're cheaper than redoing a full production batch.