I’m collecting some python tools for a blender based CAM toolchain for airfoils, hydrofoils design, milling here: ghPages.
I’m currently working on how to generate a mould for laminating.
I have a partly curved surface, with a groove (detailed approach see below):
I now want to extrude (via script) in -Z direction, such that I get a mould ‘cube’.
‘Naive’ extrusion results in the groove also showing up on the lower plane.
I searched and tried different things, but can not find a proper solution.
Any hint about how to extrude such that I get a flat plane on the bottom (via scipt)? I.e. not extrude by value (=amount) but to given Z…
Strategy for the mould:
The airfoil is cambered, therefore I need a curved surface as parting plane for upper/lower half of the mould.
So far I have managed to design (via script) the curved parting plane for the lower mould. After correct extrusion I still need to boolean subtract the wing which would then result in the correct lower mould.