I start to command the 3d printer in manual way to have a first idea on how I can print the piece. That first drawing being not unsuccessful I have to repeat the following 3d gcode or instructions.
Grow the picture
Above is what I have to repeat in order to have a first level of extrusion or fit. Then, I have to repeat that's part with 1) a comeback to 0.000 on the axe Z and 2) a level up on the Y axe and 3) find the right extrusion on E or the printer head of the 3d motor.
To conclude, I have to introduce the border frame on the rectangle to fit the support card into
After several unsuccessful attempts, I manage to get what's on the picture above. It remains to introduce the border frame. I am not going to explain this step.
Writing C program
The definitive C code generating the definitive gcode or 3d instructions for the 3d support card is below, it's a self-gen 3d printer instructions executable: