Commarker B4 and Omni 1 UV Laser Price FAQ: CNC Laser Engraving, Wood & Metal Cutting, and Safe Plastic Options

I'm an office administrator for a 34-person product development company. I handle purchasing for our prototyping shop, which means I get to turn a casual 'can we get one of these?' into a real budget. In early 2025, that request landed on my desk as a Commarker fiber laser. After comparing the Commarker B4 20W fiber laser with the Commarker Omni 1 UV laser, I kept a list of questions that kept coming up. This FAQ is that list.

1. What is the current Commarker B4 20W fiber laser engraver price?

I can give you a ballpark, but I don't want to hand you a number that's outdated in a month. Commarker runs discounts regularly, and machine-only vs. bundle pricing changes the quote. When I requested a price in early January 2025, the B4 20W fiber laser with a rotary axis came out around $2,200. I've seen later promotions that dropped the bundle price and some configurations with extra lens kits that pushed it higher. Budget $2,000 to $2,500 for the B4 if you want a rotary and an extra lens. Verify current pricing on the Commarker website before you commit.

What surprised me as a non-engineer was how much the machine on the cart isn't the final cost. Air assist, a fume extractor for plastic or coated material, and a stable workbench with extraction all add up. When I submitted the purchase order, the supporting gear added 25% to the line item.

2. What is the current Commarker Omni 1 UV laser engraver price?

The Omni 1 quote I got was around twice the B4's price, depending on whether I included the same accessories. That makes sense: a UV laser works at a shorter wavelength, which gives you a smaller spot and less heat damage on plastics, glass, and thin film. If your shop engraves serial numbers on anodized metal or marks coated components, a 20W fiber laser is probably the more cost-effective first machine. The UV laser earns its higher price when you need very fine detail or materials that crack under thermal stress.

Think of the Omni 1 as a different category, not an upgraded B4. I still don't have one on the floor, but our prototyping team keeps asking about it after seeing the clean marks on plastic components. If the budget only covers one machine, I would not buy a UV laser expecting it to do the same jobs as a fiber laser.

3. What does a search for CNC laser engraving actually give you?

One of the more confusing parts of researching this category was the term CNC laser engraving. CNC just means the path is controlled by a computer. It doesn't specify the laser source, power, or speed. That's why the same keyword returns a $400 diode desktop unit and a $10,000 fiber marker.

My practical advice: before comparing brands or models, write down the material you need to process and the throughput you expect. When a vendor says 'CNC laser engraving machine,' ask two questions: what is the wavelength, and what consumables does it require? Nothing else predicts price or capability as well.

4. Is there a laser cutter for wood and metal that replaces two machines?

Short answer: not if your wood and metal work are both serious. A fiber laser like the Commarker B4 is excellent on metals, and some users do mark wood with it. But a 20W fiber laser won't cut plywood the way a CO2 laser will. Wood and plastic absorb the 10.6 µm CO2 wavelength well. Metals reflect that wavelength, so a CO2 laser needs much higher power for metal cutting. A fiber laser is the opposite.

We ended up using the B4 for stainless steel tags and a separate CO2 machine for custom wood boxes. It wasn't the 'one laser to rule them all' approach, but from my purchasing seat, two specialized machines made more sense than constantly resetting one hybrid. Hybrid lasers are improving, but for repeatable small-business output, dedicated sources are still safer.

5. What plastics can be laser cut safely?

Acrylic is the first plastic I say yes to. PMMA, under brand names like Plexiglas and Lucite, cuts cleanly and doesn't leave the sticky residue that other plastics do. Extruded acrylic is fine for cutting; cast acrylic tends to give a flame-polished edge. Thin PETG and polyester film can also be cut with good ventilation, though the edges aren't as clean as acrylic.

I keep a no-list that I check against safety data sheets before every plastic order: PVC and vinyl because chlorine gas can damage your machine and your lungs; ABS and styrene because they smoke and smell terrible; and polycarbonate because it absorbs laser energy, discolors, and starts to burn before it cuts cleanly. If a supplier can't tell me the resin type or won't share the SDS, I don't cut it. The ANSI Z136.1 safe-use standard treats ventilation as part of the required engineering controls for Class 4 laser installations, so the exhaust system is not optional.

Also note: when you search 'what plastics can be laser cut,' the answer usually assumes a CO2 laser. With a B4 fiber laser, you're mostly marking plastic, not slicing through it. The Omni 1 UV is better for low-damage marking, but for cutting thicker plastic sheet, CO2 is the workhorse.

6. What hidden costs should a buyer plan for when adding a laser?

Our first laser-related purchase didn't include a formal ventilation plan. The machine ran fine, but the smell from a short acrylic run set off the fire alarm in the next room. We also didn't have a written checklist for laser material approval or filter replacement. That's on me.

Now, before any new machine gets approved, I ask for four things: a line-item quote with shipping fees, a fume extractor rated for the material you will process, spare protective lenses, and a signed statement that the operator has completed training. I also verify the invoice comes from a legal entity with a normal payment process, because a vendor that can't invoice properly burns more hours than the machine saves.

It took me about two years and a few rushed overnight orders to realize that the biggest ROI comes from a repeatable process, not from whichever laser has the higher number in the marketing email. Efficiency is the whole point of moving work in-house. If the new tool cuts turnaround from five days to one day but introduces a safety or invoicing hole, I've only moved the problem.