Native macOS GRBL Controller for Sculpfun, Ortur, Atomstack & More
A native, fast, and precise tool to control your GRBL-based laser engraver. Engrave images, cut SVG vectors, and draw shapes and multi-line text directly on the canvas — no Inkscape or Illustrator needed.
No credit card required. Requires macOS 15 Sequoia or later.
Professional tools in a clean, native macOS interface
Import PNG, JPEG, BMP, or TIFF images and convert to GCode with three modes: 7 dithering algorithms, grayscale mapping, or threshold. Adjust brightness, contrast, and resolution with real-time preview.
Lùmen isn't just a sender. Draw rectangles, ellipses, lines, polylines, and multi-line text right on the canvas — no Inkscape or Illustrator for simple jobs. Pick any font installed on your Mac with full width and style variants, and combine anchor-locked resize, free rotation, and per-item Fill/Stroke intensity that maps directly to laser power.
Load SVG files for precise vector cutting. Supports paths, rectangles, circles, ellipses, arcs, and bezier curves with configurable speed, power, and passes.
Photoshop / Figma-style two-level tree: each layer expands to show every shape, text, image, and SVG it contains. Click to select, edit inline, drop new shapes from the contextual + menu.
Move and resize layers with drag & drop or type exact X, Y, W, H, and angle in millimeters and degrees. Even the engrave image rotates — and the rotation is baked straight into the G-code, not just a visual effect.
Floyd-Steinberg, Atkinson, Burkes, Jarvis-Judice-Ninke, Sierra, Sierra Lite, and Stucki. Pick the best one for your material and style.
5-second countdown before every job. Auto-homing, soft jog limits, overscan clamping, and automatic laser-off at job completion.
Generate calibration grids to find the perfect settings for any material. Configurable speed range, power range, cell size, and resolution.
Use machine homing or set a custom origin anywhere. Supports bottom-left and center alignment. Jog to position, set zero, and start engraving.
Toggle a low-power laser dot to preview exactly where your engrave will land. Frame mode traces the full job boundary with the laser.
Lùmen's .gcode v2 format embeds every shape, text, and style as JSON. Reopen a project and find every item still editable — no flattening to curves or pixels. Still readable by any generic G-code sender.
Stopped mid-job? Resume from the exact line where you left off. No need to start over.
Serial console, real-time status, feed & speed overrides, jog controls, alarm management — everything you need, nothing you don't.
Ready-to-use presets for wood, leather, paper, cardboard, cork, acrylic, aluminum foil, and more. Create and save your own custom presets for any material.
Lùmen checks for updates automatically and lets you know when a new version is available. Always stay up to date.
A quick walkthrough of Lùmen's features and workflow
Photos engraved on leather and paper with a SCULPFUN C1 Mini using Lùmen's dithering and presets
Compatible with all GRBL-based laser engravers via USB. Built-in presets for popular models.
Any GRBL-based laser engraver with USB serial connection. Create and save your own machine presets.
3-day free trial. One-time purchase. No subscription.
No credit card required. Requires macOS 15 Sequoia or later. Universal binary (Apple Silicon & Intel).