Choosing Your xTool S1 and F1 Ultra: A Practical Cost-Benefit Guide for the Modern Shop

Not All Jobs Are Created Equal (And Neither Are Your Laser Options)

I've sat on both sides of the table—procurement manager at a 35-person prototyping firm, and now a guy who helps small shops figure out their tooling. If I remember correctly, our annual laser budget was about $4,200. That sounds like a lot until you factor in the cost of a bad decision. (Should mention: we blew $1,200 on rework in Q2 2024 alone because of a hasty equipment choice.)

So, when you're looking at the xTool S1 vs. the F1 Ultra, I'm not gonna give you a one-size-fits-all answer. The 'best' choice depends entirely on what you're trying to cut. Let's break it down by the three most common scenarios I see in small-to-mid-sized shops.

Scenario A: The Acrylic & Signage Specialist (Your World is Mostly S1-Clear-Acrylic & Wood)

If 80% of your work is cutting acrylic, wood, and leather, the xTool S1 with a 20W laser module is probably your sweet spot. I nearly went with a more expensive, fiber-focused machine for my shop until I calculated the TCO.

The Cost Case:

• Initial Outlay: The S1 is significantly less expensive than the F1 Ultra. The base unit and a 20W module will run you roughly $2,500 (as of January 2025, but verify that).
• Operating Costs: CO2-like diode lasers are generally cheaper to run per hour than the fiber laser in the F1 Ultra. No need for gas or complex extraction systems for most organic materials.
• The Hidden Win: The S1's larger workspace (for a diode laser) means you can nest parts more efficiently, reducing material waste. That's a direct line-item savings.

The Pitfall to Avoid: Don't over-invest in the S1's 'Pro' enclosure package hoping it will cut metal. It won't. It'll engrave coated metals weakly, but the 20W module is not for cutting stainless steel. If you need that, skip to Scenario C.

Scenario B: The Mixed-Material Hobbyist (You Want to Cut Wood, Engrave Glass, and Mark Metal)

This is the trap. Everyone wants a 'laser engraver for wood, metal, and glass.' The industry loves to sell you on the idea. But the reality is that diode lasers can mark metal, but it's not the same as cutting it.

The Reverse Validation: I believed the hype until I ignored it and tried to cut a 1mm aluminum bracket on a standard diode machine. It took 14 passes and ruined the part. The 'versatile' machine was a failure for that single job.

For this scenario, the xTool F1 Ultra (20W Fiber & Diode Dual Laser) makes more sense, but only if you accept its limitations:

• Fiber Laser: Excellent for deep engraving on metals (like stainless steel dog tags or aluminum panels). It can also cut thin metals (like shim stock or thin aluminum).
• Diode Laser (20W): Great for wood, leather, and acrylic. You get the best of both worlds.
• The Cost of Convenience: The F1 Ultra costs more upfront (think $4,000+). It also has a smaller workspace than the S1. You're paying for the dual-laser capability, not for more table space.

Per FTC guidelines (ftc.gov), I have to be clear: claims about 'universal' material compatibility need to be substantiated. I'm not saying the F1 Ultra can't do it, but you need to have realistic expectations for cut thickness and speed.

Scenario C: The Metal Fabricator (You Need to Cut Actual Metal, Not Just Mark It)

If you're reading this because you searched 'plasma cutters' or 'how to laser engrave metal with diode laser,' stop. A laser is the wrong tool for cutting thick metal. If you need to cut 1/4" steel plate, you need a plasma cutter or a CNC router, not a laser.

The Honest Truth: Even the F1 Ultra's fiber laser is for thin metals (0.5mm - 2mm max). It's a marking and light cutting tool. Trying to force a heavier cut will lead to:

• Extremely slow processing times (costing you labor hours).
• Excessive heat distortion on the material (ruining tolerances).
• Potential damage to the laser module (a $400+ repair).

For this scenario, the F1 Ultra is still a great choice for the finishing work (engraving serial numbers, cutting thin aluminum housings), but your primary cutting machine needs to be something else. I should add that we kept a cheap plasma cutter for heavy work and the F1 for detail—that combo saved us $8,400 annually on subcontracting.

How to Know Which Scenario You're In (Don't Guess)

Don't rely on gut feel. Last week, I helped a client who was convinced he was Scenario A (acrylic signage). After reviewing his last 10 orders, 3 of them required metal brand plates. He needed the F1 Ultra. Here's a simple self-diagnosis:

1. Audit your last 20 orders by material: What did you actually cut?
2. Identify the 'pain point' job: Which job requires you to subcontract or say 'we can't do that'?
3. Estimate the revenue from that job: If you bought the F1 Ultra, would it pay for itself in 6 months by keeping that work in-house?

That last step—the revenue calculation—is what most people miss. A $5,000 machine that brings in $1,000/month of new work is a better investment than a $2,500 machine that only does what you already do. (Thanks to USPS (usps.com) for the shipping cost reference on that new work, by the way—shipping a small metal part is way more expensive than shipping a flat acrylic sign.)