Diode, infrared or fibre
A blue diode laser is the most common type for home use. It engraves wood, leather, paper, card and dark or coated materials well, and with enough power it also cuts thin wood. Clear acrylic and glass are difficult for it, because the light passes through. An infrared laser marks metals and many plastics in fine detail. A fibre laser is made for metal: it engraves steel and aluminium deeply and can cut thin sheet. Dual-laser machines pair a diode laser with one of these.
What to check before buying
- Work area: how large an item or how long a design the machine takes, and whether you need a roller or extension.
- Power: more watts means faster work and thicker cuts.
- Materials: make sure the laser type suits what you want to engrave.
- Safety: open machines need safety glasses rated for the laser’s wavelength, while enclosed Class 1 machines keep the beam inside. Every laser makes smoke, so work in a ventilated room or use an extractor, and never engrave PVC or vinyl, which release chlorine gas.