Hi Michel,
I guess you called my bluff!
I attach my attempt at your inlay. I must start with all sorts of weasel-words about this being for illustration purposes only - at your own risk - this could destroy your machine - not my fault, etc. I would not normally provide a .cb file completely untried. I have made no attempt to set up feeds-and-speeds.
I should also say that I did this using 9.8, not 1.0, since I am not sure if the v-Engrave is working yet. I was getting warnings in 1.0 about v-Engrave, but much has happened in the last few days and I am probably not current.
But that said, I thought I should try to help, and perhaps this might also assist someone else. Here we go!
Your file included 'text' objects, so the first thing was to convert these to polylines. Since you have nested lines (the letter 'a'), I converted the polylines to regions. V-engrave needs regions for nested shapes.
I see that your file used mms (good choice), so I made arbitrary assumptions that I would use a 90-degree v-cutter, that the Air Gap would be 2mm, the sanding 1mm, the Inlay would be 4mm thick and the glue 1mm. I plugged all this into the Inlay calculator, which gave me an Inlay Offset of 6, Substrate Offset of -10, Substrate Target Depth of -6 and Inlay Target Depth of -7.
Fortunately for you, but unfortunately for my example, your letters are all very thin. There are no broad areas that need to be roughed out. The substrate can be v-engraved as-is, without the need for an inside offset, and there is no need for a substrate roughing pass.
I followed the description on the first page of this thread, making four copies of the original curves, each on a separate layer. The substrate engrave layer is good as it stands, and the second roughing layer is not needed.
The third layer, the inlay engrave, is where the fun starts. Follow the description exactly as to the use of the offset, convert-to-region and union operations, and then the select all on layer and convert-to-region.
In the fourth layer, I added a rectangle around everything. I did not leave myself enough space, so it goes over the axes. Sorry.
See the description for how the mops are set up. Note carefully the stock surface for the substrate engrave. The substrate pocket is not needed. The Inlay engrave stock surface is -4. The final inlay pocket, using a milling cutter, has a roughing clearance of 3, which is half the Inlay Offset, and a target depth of -7, as given by the calculator.
I am being rather aggressive with the v-engrave cutter, which is going rather deep for one pass, especially in the gap between the two words. Either a thinner Inlay depth would have been better (less than the 4mm I picked) or perhaps the inlay engrave should be done in two passes, lying about the stock surface for the first pass. I don't know what your machine can manage - check your extents.
Anyway, I hope that this is useful to you and wish you all luck. Please be careful, as I say, I have not tried this!
Bob