Wood Laser Engraving Settings

How Wood Responds to Laser Energy

Laser engraving burns organic material—lignin and cellulose carbonize at specific temperatures. Light woods (maple, birch, basswood) burn darker creating high contrast. Dark woods (walnut, mahogany) burn lighter with subtle contrast requiring higher power or multiple passes.

Grain density varies within single species. Hardwoods (oak, maple, cherry) have dense summer growth creating darker bands, lighter spring growth burns faster. Softwoods (pine, cedar) contain resin pockets that burn unpredictably—some areas ignite easily, others resist. Test burns reveal these variations.

Moisture content affects burning: kiln-dried wood (6-8% moisture) engraves cleanly with predictable results. Air-dried or fresh wood (12-20% moisture) requires higher power, produces smoke staining and shows uneven burning. Always use kiln-dried material for consistent quality.

Wood direction matters: engraving across grain produces sharper detail than with grain. Cross-grain fibers cut cleanly. Along-grain fibers tend to char and spread. Orient designs perpendicular to prominent grain when possible.

Settings by Wood Species

Maple (hard maple, sugar maple): Dense, uniform grain. Excellent detail retention. Settings: 80-100% power, 300-400 mm/s speed, 300-400 DPI. Burns dark chocolate brown. Multiple passes deepen tone without increasing size. Perfect for photo engraving—holds fine detail better than any wood.

Cherry: Medium density, smooth texture. Natural reddish color darkens beautifully. Settings: 70-90% power, 350-450 mm/s, 300 DPI. Burns warm brown-black. Grain virtually invisible in engraving. Produces photographic quality with proper dithering. Premium choice for gifts and decorative work.

Walnut: Dense dark wood. Low contrast (dark burns slightly lighter). Settings: 90-100% power, 250-350 mm/s, 250-300 DPI. Requires multiple passes or very slow speeds. Contrast enhancement in file preparation critical. Not ideal for photos—better for high-contrast graphics and text.

Birch: Light, fine-grain, affordable. Good detail. Settings: 75-95% power, 300-400 mm/s, 300-400 DPI. Burns medium brown. Slightly softer than maple—detail marginally less crisp but excellent value. Baltic birch plywood (below) uses birch throughout layers.

Oak: Coarse open grain. Inconsistent burning. Settings: 80-100% power, 250-350 mm/s, 200-250 DPI. Grain lines very visible—choose quarter-sawn for straighter grain. Not recommended for detailed photos. Works for rustic signs, coarse graphics. Red oak more consistent than white oak.

Pine: Soft, resinous, inexpensive. Unpredictable results. Settings: 60-80% power, 400-500 mm/s, 200-250 DPI. Resin pockets burn darker than clear wood creating blotches. Acceptable for simple text and graphics where variation adds character. Pre-seal with shellac for more uniform burning (reduces contrast).

Bamboo: Technically grass, behaves like hardwood. Very consistent. Settings: 75-90% power, 350-450 mm/s, 300-350 DPI. Burns golden brown on natural side, darker on carbonized side. Eco-friendly, affordable, excellent for products (cutting boards, coasters, phone cases).

Plywood Considerations

Baltic birch plywood: Premium laser plywood. Birch veneer throughout (no filler wood). Consistent burning across piece. Settings similar to solid birch: 75-95% power, 300-400 mm/s, 300 DPI. Glue lines barely visible in engraving. Industry standard for laser projects.

Standard plywood (construction grade): Multiple species in layers. Face veneer may be different from core. Glue lines engrave differently creating visible stripes in large fills. Lower DPI (200-250) and high contrast masks transitions. Acceptable for signs where variation adds rustic character.

MDF (medium density fiberboard): Composite material, very consistent. Dense—requires high power (90-100%), moderate speed (300-400 mm/s). Burns chocolate brown with slightly fuzzy edges. Sealed MDF engraves cleaner—raw MDF absorbs smoke creating dirty appearance. Good for jigs and templates where aesthetics secondary.

Veneer problems: thin face veneer (<1mm) can burn through with standard settings. Reduce power 20-30% or increase speed 50%. Test corner first. Over-burn reveals glue layer or substrate—ruins piece.