V-carving is one of the most impressive techniques you can do with a CNC router. A V-shaped bit traces along design paths, varying the depth (and therefore width) of the cut based on the design geometry. The result looks like skilled hand-carving — sharp at narrow points and wide at broad areas. It's the technique behind most professional-looking CNC signs.
How V-Carving Works
A V-bit has an angled cutting tip (typically 60° or 90°). When the CNC plunges it into the material, the deeper it goes, the wider the cut becomes. Your CAM software calculates exactly how deep to cut at each point based on the width of the design element:
- Thin lines → shallow cut → narrow groove
- Wide areas → deep cut → broad valley
- Pointed intersections → precise V-shaped meeting point
This automatic depth variation is what gives V-carving its signature look — varying width and depth that follows the geometry of the design naturally.
Choosing the Right V-Bit
| Bit Angle | Characteristics | Best For |
|---|---|---|
| 60° V-bit | Deep, narrow cuts with steep walls | Detailed designs, fine lettering, intricate patterns |
| 90° V-bit | Wider, shallower cuts | Bold signs, large lettering, designs where visibility matters |
| 30° engraving bit | Very fine, hairline cuts | Extremely detailed work, small text, fine line art |
For most SVG sign projects, a 60° V-bit offers the best balance of detail and visual impact. Use a 90° bit for larger signs where you want the carving to read from a distance.
CAM Software for V-Carving
VCarve Desktop / Pro (Recommended)
Vectric's VCarve software is purpose-built for this technique. Import your SVG, select the vectors, choose your V-bit, and the software calculates the entire toolpath. VCarve Pro adds larger work area support and advanced features like tiling for oversized projects.
Carbide Create Pro
The Pro version of Carbide Create includes V-carving toolpath generation. It's simpler than VCarve but handles basic V-carving projects well. Good if you're already in the Carbide ecosystem.
F-Engrave (Free)
An open-source V-carving program that imports SVG and DXF files. More limited than commercial options but functional for basic projects. Worth trying before investing in paid software.
Step-by-Step V-Carving Workflow
- Import your SVG — Load the design into your CAM software. Verify that all paths are clean and closed.
- Set material dimensions — Define the size and thickness of your workpiece. Position the design on the virtual stock.
- Select vectors for V-carving — Select all the paths you want to V-carve. In VCarve, this is as simple as selecting the vectors and clicking the V-Carve toolpath button.
- Configure the V-bit — Select your bit type (60°, 90°, etc.) and set the maximum carving depth. The software calculates the rest.
- Add a flat clearing bit (optional) — For designs with large filled areas, add a flat end mill as a clearing tool. It removes bulk material quickly, and the V-bit only handles the edges and fine detail. This dramatically reduces carving time.
- Simulate — Run the 3D preview to see exactly what the carving will look like. Check for any issues before committing to material.
- Generate G-code — Export the toolpath to your machine's format and transfer to your CNC controller.
- Set up the machine — Secure your workpiece, set your X/Y zero point, and probe or set your Z zero on the material surface.
- Carve — Run the job. Watch the first few minutes to make sure everything is running correctly.
Best Materials for V-Carving
- Hardwoods (maple, cherry, walnut) — Produce the cleanest V-carved edges. The tight grain holds crisp detail.
- MDF — Extremely consistent, fine detail, easy to paint. No grain means no tearout. The best material for painted V-carved signs.
- Baltic birch plywood — Good balance of quality and cost. The layers visible on the carved edges can add character or be distracting, depending on the project.
- Sign foam (HDU) — High-density urethane foam carves like butter and accepts paint well. The professional choice for outdoor signage.
For a deeper comparison of wood types, see our best wood guide.
Design Tips for V-Carving
- Fonts matter enormously — Serif fonts and script fonts V-carve beautifully because the varying stroke widths translate to varying depths. Sans-serif fonts with uniform strokes produce a flatter, less dramatic result.
- Closed paths are essential — V-carving requires closed vector paths. Open paths will be treated as line engraving, not V-carving. In Inkscape, check for and close any open paths before exporting.
- Consider negative space — V-carving the background (leaving the text raised) produces a different look than carving the text itself. Both approaches work — experiment to see which you prefer.
- Avoid very thin elements — Elements thinner than the bit tip produce only surface scratches. Design with your bit's minimum cut width in mind.
Finishing V-Carved Projects
- Sand lightly — A very light sanding with 220-grit removes any fuzz without rounding the carved edges
- Paint filling — Apply paint over the entire surface, let it settle into the V-carved grooves, then sand the flat surface clean. The paint remains in the carved areas for a two-tone look.
- Stain and seal — A coat of stain followed by clear polyurethane protects outdoor signs and enhances the wood grain
- Epoxy fill — Fill V-carved areas with colored epoxy for a dramatic, smooth-filled look
Find CNC-Ready Designs
Browse our CNC design collections for SVG files optimized for V-carving and CNC routing. Clean vector paths, closed shapes, and designs that take advantage of the V-carving technique's strengths.
Need custom text or designs for V-carving? Craftgineer's Vector Studio generates V-carve-ready vector designs from text descriptions — describe what you want and get clean, closed-path SVGs.
For more CNC techniques, read our CNC router SVG guide and depth map carving tutorial.
