Laser engraving/etching

What it is

A focused beam of light hits wood and the surface chars in a fraction of a second, leaving a permanent dark mark exactly where the beam landed. That single physical fact, controlled precisely, is the whole of laser engraving. There is no ink, no blade, no contact at all.

A laser engraver translates digital artwork into burned or vaporised marks on wood, leather, acrylic, anodised metal, and glass. What used to require an industrial facility now sits on a desk. A mid-range diode machine such as an xTool D1 Pro or a Sculpfun S30 Pro costs €200 to €600 and produces results most people cannot tell apart from professional engraving. A CO₂ laser costs more but cuts thick acrylic and wood cleanly and runs faster. The result is the kind of personalisation that pays for the machine across a handful of gifts.

The marking is only half the craft. The other half is the design work: taking a photograph, an illustration, or a block of text and translating it into something that reads beautifully once it is burned into a surface. That means thinking about contrast, resolution, and how each material responds to heat. Wood chars dark and dramatic. Leather develops a rich brown. Glass needs lower power and a paper mask or it cracks. It sits right at the meeting point of graphic design and physical making.

The single habit that separates good results from frustration is testing. Run a power and speed grid on a scrap of the same material before committing to the real piece, then save the settings that worked. One good test grid is worth more than an hour of guesswork, and every experienced user has a notebook of confirmed settings per material. Safety is not optional here either: these are typically Class 4 lasers, the highest hazard category, so proper wavelength-rated goggles and ventilation are non-negotiable.

How it works

Power and speed are the two variables that decide everything, and the only way to find the right pair is to test rather than guess. Open your design in LightBurn, the software most serious users run because it drives almost every diode and CO2 machine, and import an SVG for vector cutting or a high-contrast image for raster engraving. Before committing to your actual piece, run a material test grid on a scrap of the identical material: a matrix of small squares, each at a different power and speed combination, so you can read off exactly which setting gives clean depth and contrast.

For engraving wood, position the material on the bed and focus the laser. Most modern diode machines like the xTool D1 Pro autofocus; a CO2 laser usually needs manual focus adjustment with a spacer block.

Run a framing pass first, which traces the outline without firing, so you confirm the job lands where you intended and not 2cm off the edge of your blank. Ventilation runs before the beam ever fires, not after you notice the smell.

Masking is the trick that separates clean results from sooty ones. Lay transfer tape over light wood or acrylic before engraving, and the smoke residue settles on the tape rather than staining the surface, then peels away to reveal a crisp mark underneath. For cutting rather than engraving, several slower passes at lower power give a cleaner edge than one fast high-power pass that chars and tapers the cut wall.

What actually happens to beginners is they nail one material, save nothing, and then burn three test pieces re-finding the same numbers next week. Save every confirmed setting in a per-material library inside LightBurn. The experienced version of this practice is a notebook of settings that turns each new job into a two-minute setup.

Benefits

Creativity Relaxation Focus Training Self-Expression Historical Curiosity Enjoyment / Fun

What you need

Here's what to gather before you start. The essentials are marked.

Diode laser engraver: xTool D1 Pro, Sculpfun S30 Pro, or Ortur Laser Master 3

Or CO2 laser: xTool P2, OMTech 40W, or Glowforge Plus

LightBurn software (€50 one-off, supports most laser brands)

Laser safety goggles rated for your laser's wavelength (non-negotiable)

Air assist and exhaust fan or air purifier

Materials: plywood, solid wood, leather, anodised aluminium, acrylic

Transfer tape / masking tape (for clean engrave results on wood)

Cermark or Brilliance laser marking spray (for bare metal engraving)

FAQs

What can I actually engrave, and what should I never put in a laser?

Wood, acrylic, leather, slate, anodised aluminium, and coated metals all engrave well. The hard rule is no PVC, vinyl, or anything chlorine-based, ever. When a laser hits PVC it releases chlorine gas, which corrodes the machine and is genuinely dangerous to breathe. I keep a printed list of safe materials by the machine and check anything unfamiliar before it goes in.

How powerful a laser do I need?

For engraving and light cutting, a 5 to 10W diode laser (around €200 to €500) handles wood, leather, and acrylic surface marking. To cut thicker acrylic and hardwood cleanly, a 40W or larger CO2 laser is far better but costs into the thousands. I started with a 10W diode and only wished I had more power once I tried cutting 6mm plywood in a single pass.

Why are my engravings coming out blurry or uneven?

Focus and material flatness, usually. The laser has one precise focal distance, and if the surface is warped or the height is off, the beam spreads and the result looks soft. I check focus on every job and weigh down warped stock. Slowing the engraving speed and lowering power on detailed work also sharpens fine text that otherwise burns wide.

Is the smell and smoke a problem indoors?

Yes, and it needs proper handling. Engraving produces fine smoke and fumes that you should not breathe, regardless of material. I run an inline fan venting through a window with ducting, not just an open window nearby. Air assist (a small nozzle blowing air at the cut point) also keeps the lens clean and reduces scorching around the engraving.

Can I make money from this?

Yes, this is one of the more genuinely profitable making activities. Personalised gifts, wedding signage, pet tags, and small-batch product marking all sell well, and margins are decent because materials are cheap relative to what people pay for personalisation. The bottleneck is rarely the engraving itself. It is photography, listings, and turnaround time once orders start arriving.

⚠️ Never laser any PVC, vinyl, or chlorine-containing material. It releases corrosive, toxic chlorine gas. Always run proper extraction venting outside, not just an open window.