Working up toolpaths for a guitar body from an STL or DXF

as requested on support…

Given a guitar body design as an STL:

and a DXF:

We import each:

and look into how the imported geometry and 3D model work out for making toolpaths.

The DXF is cleaned up, and vectors closed and redundant open vectors separated/deleted:

exported as an SVG, and then imported into the .c2d file with the 3D model:

So we check the relative sizes and resize:

For each pocket, we draw in some geometry:

and use it to check the thickness:

and set matching toolpath depths:

Note that we are just setting up depths, and not considering matters such as cutting flute length:

It will be necessary to verify these and if need be, to source tooling suited to cutting at the specified depths.

Similarly, for cutting out the body, one will either need to source a tool able to make a 1.75" deep cut, or do this as a flip job and cut halfway, or finish on a router table or something:

Assuming one can find an 0.25" endmill able to do this, offset the outer geometry by that dimension plus 10%:


Next, it will be necessary to cut the neck pocket out from the body of the guitar (maybe we should have kept some of that open geometry) — since the nodes of the geometry should be set up to allow this construction, we select both:

copy-paste them:

Go into Node Edit Mode:

and cut the two vectors open:

and delete nodes until we are down to just what is needed:

Then, draw in the missing line segments:

Select everything:

Join Vectors:


Drag everything into alignment:

Edit the pocket toolpath for the neck:

selecting this new geometry and the offset:

Changing the vectors so that the file now previews as:

Then select the outer and offset geometry and do toolpaths down to tab height starting at the bottom of that pocket:

Then do a contour toolpath starting at the bottom of that pocket with tabs:

which previews as:

A final refinement would be to offset the outline geometry by the radius of the tip of a roundover tool and cut that geometry to a suitable depth to get the rounding, or one could do that on a router table, or with a suitable handtool. For the roundover tool, see:


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