![]() Related content: How and why do we apply scale in Blender? This just tells Blender that the scale of this object as it is right now is the new starting point. ![]() Make sure you have applied scale we do this using Ctrl+A and select scale from the menu. If not, there are plenty of actions we can take to make the fast solver work. In later versions of Blender, there is now an exact solver, in the modifier settings switch from fast to exact if you can spare the speed loss. The first steps make sure we have a watertight mesh. I usually have a few steps that I go through whenever this happens. There are a handful of tricks we can try if we run into an uncooperative Boolean. How do we troubleshoot Boolean modifier problems? The manual continues to list four key troublesome scenarios. The manual doesn’t state that all circumstances except watertight meshes will fail but not making sure that this is true can’t guarantee a trouble-free operation. Booleans work best on manifold or watertight meshes. Related content: Top 10 Blender modifiers and how they work Boolean limitationsĪccording to the Blender manual, there are some limitations to the Boolean modifier. To learn about other modifiers, this is a good place to start. Related content: How modifiers work in Blender, an overview If you need a beginner guide to modifiers you can read this article to learn how to get going. If you need to apply a Boolean modifier, check wireframe viewport mode first and see if you can spot any details or loose edges that float off. Having a too high value can sometimes cause loose edges being generated that shoots off in different directions. However, if you have faces that are just barely overlapping this value can be used to either ignore those parts or tweaked to just precisely leave them within range to be included. The default value is 0.000001meters, and that is a fair value to start with. We should keep this value at an all-time low. This is one of our defenses against a misbehaving Boolean. ![]() We also have the overlap threshold value slider. Intersect removes all the volume that is not shared between the two objects.Any faces that would have remained inside of this newly joined object is deleted leaving a manifold (watertight) mesh. ![]()
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