Sketch — canvas & feature tree
3D View — toolpath preview
3D View — machined result
PureCut CNC is a browser-based 2.5D + 3D CAD/CAM workspace for designing parts, defining machining operations, and verifying toolpaths — before you cut a single chip. No registration is required, and the app does not store your projects remotely. New here? Follow the Quick Start guide to go from a blank project to exported G-code in minutes.
The browser app needs a tablet or desktop. On phones, use Desktop Downloads above.
Sketch — canvas & feature tree
3D View — toolpath preview
3D View — machined result
From geometry to G-code — draw, import, assign operations, preview in 3D, simulate material removal, and export when it looks right.
Rectangles, circles, ellipses, polygons, splines, composite profiles, and text features — all editable directly on the canvas with snapping, measurements, and direct node editing.
Import 2D source geometry from SVG or DXF, or bring in 3D models from STL and OBJ files. Multi-body meshes split into one feature per body automatically. Imported geometry can be transformed and machined like hand-drawn features.
Pocket, edge route inside/outside, drill, V-Carve offset, V-Carve skeleton, surface clean, and engrave for 2.5D parts — plus 3D Surface rough, finish (parallel or waterline), and cleanup for imported models. Rough and finish passes, rest machining, region masks to limit where any operation cuts, tabs, clamps, and per-tool feeds and speeds throughout.
Live CSG evaluation builds a 3D solid from your feature tree. Inspect entry/exit points and toolpath direction before cutting, then export the assembled model as STL (binary or ASCII) with selectable curve quality.
Replay toolpaths against stock in a fully GPU-rendered heightfield simulation. The cut state lives in a texture and is displaced in a vertex shader, with incremental per-frame updates — high-density grids (up to 1500 cells) stay interactive while you scrub, with a live XYZ readout in the playback bar.
Export clean G-code for Grbl, GrblHAL, LinuxCNC, and Mach3. Post-processor support for custom machine configurations. Preview with syntax highlighting before you download.
Text is an editable feature, not exploded letter geometry. Single-line text with skeleton and outline styles, built-in font selection, and full transform support.
Import an STL or OBJ model and generate 3D rough, finish (parallel or waterline), and targeted cleanup toolpaths directly from it. Overhang protection, region clipping, surrounding-feature avoidance, gouge protection, and adaptive waterline refinement for steep walls all included.
Edge route operations automatically generate rest regions so you can follow up with a smaller tool and clean up what the first pass left behind.
Define your endmills, ball mills, V-bits, and drills once. Assign tools to operations and override feeds and speeds per operation as needed.
No installation, no registration, and no cloud-stored project data. Open the app in a modern desktop browser and work locally. Desktop versions are in progress.
Tablet shell layout activates automatically on touch devices with a vertical tool rail, drawer-based panels, snap popover, and pinch / two-finger pan / long-press gestures. Constraint creation, dimension entry, and feature placement all run from canvas workflow panels designed for touch.
A focused set of 2.5D operations — including drilling where it matters — each with rough and finish variants, configurable tooling, and toolpath preview.
A linear workflow that mirrors how machinists think — geometry first, operations second, verify before you cut.
Set your stock dimensions, material, and profile boundary. Any shape — rectangular plate or irregular casting.
Draw geometry directly on canvas, import SVG, DXF, STL or OBJ, pull in folders from another .camj project, or trace from a backdrop image. 2D imports become editable sketch features; 3D meshes become Model features for 3D operations.
Reorder features in the feature tree. The CSG evaluation order determines what material gets removed or added — get it right visually before moving on.
Select geometry, pick an operation type, configure tool, stepdown, stepover, and strategy. Repeat for each operation.
Preview in 3D. Run the simulation and watch material come off. Check tabs, islands, and carving behavior match expectations.
Choose your machine controller, preview the G-code output, and download the .nc file when it looks right.
Switch between views as your work progresses. All three stay in sync with the same project state.
Primary drawing surface. Edit geometry, inspect 2D toolpath projections, check snapping and feature ordering.
CSG-evaluated solid derived from your feature tree. Inspect toolpaths spatially — entry/exit points, path direction, depth layers.
GPU-rendered heightfield replay. Scrub through the toolpath sequence — with a live XYZ readout — to catch problems before they hit the spoilboard.
Playback makes the simulation view useful for more than a final beauty shot. Scrub through the cut order to catch rapid moves, drilling sequence, tab behavior, and material removal issues before you export G-code.
No install. No account. No remote project storage. Just open the app and start designing. Desktop versions are in the works.
The browser app needs a tablet or desktop. On phones, use Desktop Downloads above.
PureCut CNC is in active development and your input shapes what gets built next. If something isn't working, feels off, or you have a feature you'd love to see — open an issue on GitHub. All feedback is welcome.
Open an Issue on GitHub