Since Carbide Create doesn’t have explicit support for doing inlays (software which does includes Vectric Vcarve and possibly F-Engrave) one has to calculate out the toolpaths for this manually. Considerations include:

- endmill geometry
- glue line / thickness — suggestion here is to glue together a stack of 6 popsicle sticks, then after it dries, measure the difference between the glued stack and 6 which are not so fastened — that thickness difference divided by 5 is a typical glue line for the glue / clamping technique used
- inlay thickness
- part geometry

Some cases can be quite simple: — a flat inlay of a part which doesn’t have any corners which the endmill won’t fit into is simply a matter of cutting out the part, then cutting a matching (possibly mirrored) pocket which is deeper and larger around the perimeter by the glue line (if using hide glue, this may be negligible).

A more complex situation is a V inlay of a material of one thickness into a material of greater thickness — this will require that one:

- measure the material (plus anticipated glue line)
- calculate the offset necessary to cut the part to the desired size
- calculate the inset needed to cut the perimeter of the pocket as a V carve
- calculate the inset needed to cut the bottom of the pocket

Let us consider the following case:

- 60 degree V bit (Carbide 3D #302)
- 0.316" thick material
- 0.004" thick glue line
- 0.5" thick stock material to inlay into

For simplicity, we’ll use a 1" circle.