Add grip fins

[redPanther]

would be cool if you could add grip fins like described in https://blog.rahix.de/design-for-3d-printing/#grip-fins

from workflow add it to tool wizard. when clicked let edit the length and the spacing of the fins.

thx :-)

[Rahix]

Yeah, I agree this would be nice. To be quite honest, I haven't yet experimented with grip fin designs enough to have a good enough understanding of the relevant parameters.