Image Preparation
GravoLab
Box Generator

Free Online Tools for Laser Engraving and Laser Cutting

Laser Engraving Image Preparation (Converter) & Laser Cut Box Generator (SVG)

GravoLab is a free web platform built to make preparing files for laser engraving and laser cutting faster, easier, and more accessible. Instead of wasting time on complex settings and manual processing, you can automatically process photos for engraving and generate box drawings ready for direct laser cutting.

Image Preparation for Laser Engraving: automatically prepare photos for engraving (clean contrast and better detail) and get an engraving-ready result. Open Image Preparation.

Box Generator: generate real-scale SVG drawings for finger-joint boxes. Set inner/outer size, material thickness, lid options, and adjustable dividers. Open Box Generator.

The project is built from real-world practice — for people who actually work with laser machines and need a fast, intuitive, and reliable tool. The site is and will remain free to use.

Quick Tips for Wood Laser Engraving

These practical wood laser engraving tips help you get darker engravings, cleaner details, and more consistent results. Use them when preparing photos and settings for engraving on plywood, hardwood, and other wooden surfaces.

  • Choose tight-grain wood for detailed engravings. Maple, beech, and birch usually engrave cleaner. Strong grain patterns can overpower fine photo details.
  • Sand before engraving for a smoother, more even tone. A light sand (fine grit) reduces blotchy burns and improves consistency across the surface.
  • Clean dust and oils before engraving. Dust, fingerprints, and resin can cause uneven marks. Wipe with a dry cloth/brush (or lightly with isopropyl alcohol).
  • Always run a small test engraving first. A quick 20–30 mm test saves material and helps you dial in power, speed, and contrast before the final piece.
  • Slower isn’t always better. Too much power or too slow speed can over-burn wood and blur details. Aim for crisp lines and controlled darkness.
  • For photo engraving: increase contrast and reduce midtones. Wood tends to turn midtones into “muddy gray.” Strong highlights and deep shadows usually produce better results.
  • Use low air assist for engraving (high air is for cutting). Strong air assist can cool the burn and blow away smoke/soot too aggressively, often making engravings lighter with less contrast. Use air assist off or very low—just enough to keep the lens clean.
  • Wood grain direction affects fine lines and small text. Thin lines parallel to the grain can disappear more easily. If possible, rotate the design to improve legibility.

Want more engraving settings and step-by-step guides? Check back soon — we’ll keep adding practical tips based on real laser workshop experience.

FAQ

  • Does GravoLab export files at real scale (1:1)?
    Yes. The Box Generator exports an SVG drawing designed to be used at real size for laser cutting.
  • Can I generate finger-joint boxes with a lid and dividers?
    Yes. You can set material thickness, inner/outer size, add a lid, and control divider positions.
  • What is the best material thickness for laser cut boxes?
    Common choices are 3mm and 4mm plywood for small boxes, and 6mm for sturdier builds. Always run a small test cut first.
  • How do I prepare photos for laser engraving on wood?
    Increase contrast and reduce midtones, then test a small area. GravoLab Image Prep helps you get a cleaner engraving-ready result.
  • Is GravoLab free to use?
    Yes — the site is completely free.
  • Where can I start?
    Use Image Prep for engraving photos, or Box Generator to export a box SVG for cutting.