Carbide Create is a rudimentary drawing / CAD tool, but has decent back-end CAM capabilities (and keeps getting better). Shapeoko CNC Router, Rigid, Accurate, Reliable, and Affordable
F-Engrave is a nice (free/opensource) turnkey tool — it affords a few options which Carbide Create doesn’t for engraving, so might be a nice thing to fall back on if you find you need access to one of those features. Shapeoko CNC Router, Rigid, Accurate, Reliable, and Affordable
InkScape is a decent (RGB/screen-oriented) vector drawing program — if you’re comfortable using Adobe Illustrator, there’s no reason to use Inkscape unless you need one of the specialty plug-ins for it such as gcodetools, or one of the ones which exports to OpenSCAD. Shapeoko CNC Router, Rigid, Accurate, Reliable, and Affordable
My suggestion would be to draw / create in Adobe Illustrator, then save as a .svg, then open that svg in Carbide Create and do CAM there.
Here’s a bit of information on file formats: Shapeoko CNC Router, Rigid, Accurate, Reliable, and Affordable — please let us know if anything is unclear or could be improved on.
The wiki has a guideline for text size vs. bit angle: Shapeoko CNC Router, Rigid, Accurate, Reliable, and Affordable
The tradeoff is feature size vs. feature depth — an acute angle allows one to cut a smaller, finer feature w/ more depth, while a more obtuse angle allows one to cut a larger area w/ a single pass and while having a single bottom, as opposed to a ragged set of scallops. Recommended bit angle for a given text size:
- <1" 45–60°
- 1–2" 60°
- 2–4" 60–90°
- 4–6" 90°
- 6–10" 90 to 120°
- greater than 10" 120° or greater