Fully customizable ventilation grill

cults3d

This Thing is a fully customizable ventilation grill that allows you to cunstruct a wide range of ventilation outlets just by changing some parameters. This is a remix of Thing: https://www.thingiverse.com/thing:3320712 It introduces some new features like: * possibility to make slanted ribs * sizing now based on the required cut out * the ventilation ribs are now automatically centered by default, but can also be shiffted by providing an offset. * the shape of the brim an be independently set from the tube - different radiuses are possible. * Quicker calculation due to re-writing almost the complete code.