Font for inside and outside CNCing

Need to figure out how to get a font (or other shape) to CNC properly inside and out to fit into itself, i.e. method to know that shape has no radius smaller than the bit.

• testing Hershey Text - http://www.evilmadscientist.com/2011/hershey-text-an-inkscape-extension-for-engraving-fonts/
  • that provides nice single line engraving text, to a point solves the font's radius problem, but not the outside one...

Workflow

• make line text (find better text maker?)
  • Extensions, render, hershey text
  • tweak shapes
• stroke style
  • line thickness = bit * 2.1 (2 to be exact, add .1 to have some space)
  • use rounded joins and caps
• scale/tweak so there are gaps where need to be
• stroke to path
• fill none, stroke yes
• new path strokestyle, round join and cap, width of bit
• fix distances of letters
• redo stroke to path
• break apart, delete, recombine as necessary
• fix/tweak

works for other shapes too

works for regular fonts and other shapes, too, but gets very large