The Reset direction button will align the clipping plane tool parallel to the current camera view. Move the slider from left to right to move the clipping plane. You can use the clipping plane tool to hide a part of the object, so that difficult to reach areas can be easily painted. Paints the whole triangle under the mouse cursor. Paints all visible places inside the circle from the current view, possibly leaving unpainted areas, but never painting behind corners. Paints everything inside the sphere regardless of whether it is visible or not from the current view. Paints neighboring facets whose relative overhang angle is less or equal to the Smart fill angle. Paints facets according to the currently selected brush. You can also enable the On overhangs only checkbox, which will limit all brush strokes only to the highlighted triangles. The overhang triangles are visualized in real-time while the threshold is being adjusted. This can help you decide where you want to paint enforcers. The highlight by overhang angle slider allows you to visualize all triangles that are "more horizontal" than a threshold. The support generator itself works on a grid internally, so the supported/unsupported areas are not infinitely detailed. IMPORTANT NOTE: Your selection will not be completely obeyed when the painted region is very small. You can block some automatically generated supports with blockers while at the same time mark areas which did not get automatic supports with enforcers. In this case, set supports to Everywhere or From build plate only. With very complex models, it's possible you might want to use both enforcers and blockers at the same time. Enforcing and blocking supports at the same time Supports will now be generated based on the set Overhang threshold except for the area blocked by the painted Support blockers. These modes also turn on Auto-generated supportsin Print settings - Support material. If you're using support blockers, you should change supports to Everywhere or From build plate only.
This second use-case is useful if you set the Overhang threshold very low, so only very steep overhangs will get auto-generated supports. Of course, you can also set supports to Everywhere or From build plate only and use support enforcers to mark additional areas that need to be supported. If you're painting support enforcers, it makes the most sense to change supports to For support enforcers only. By default, support generation is set to None in the right panel. Do not forget to enable supports if you want to actually generate them.
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