I have a problem with the Boolean operation ‘difference’. Two closed objects are given. In the first one there is a cylinder with 146 vertices (24 segments, in 6 levels). It is the base object. In the difference object there are 58 UVspheres with each having 18 segments and 18 rings each. So we have a lot of vertices here (17864). The second object is penetrating the first one (each UVsphere penetrates the cylinder in the same way).
I used Blender 2.34 and I received a result object in about one minute. Unfortunatelly it has some errors, but with 30 minutes of work I could fix them by hand.
Now I am using Blender 2.40. Here the process takes a lot of time - nearly one hour - and finally no result appears. With a testing object having 4 UVspheres as difference for a cube I get a result but it takes some minutes.
Does anybody know if there was a major change in release 2.40 in this function? Is this a known problem or do I habe to do it in an other way. Please give no solutions like “there are to many vertices” - the older version could do it.
I selected both objects and used the w-key in order to apply the difference operation. This was the way I was used to it. Toni informed me that I should take a look to the introduction of the modifier system. Unfortunatelly I could not receive any result this way, too. The error message was:
Modifier is disabled or returned error, skipping apply.
Boolean Modifier
[…] It should be noted that this code currently uses Blender’s undeveloped boolean system and that a much cleaner and more stable booleans system is in the works.
I wonder why the described error occurs because they talk about an “undeveloped boolean system”, but it seems that that some changes took already place.
So my work around is to use a previous version. Some postings document the problem in the bug-tracker already. I am sure that the developers will solve the problem.
Thanks a lot for everyone giving me an answer. Feel free to add any comment or better solution.
I had the same sort of problem about a month ago. Another kind user solved the problem for me. Here’s what he told me to do: first > select both meshes and remove doubles, second > use the decimator tool on both meshes until you get an acceptable result, third > run your boolean operation. This has worked really well for me in 2.4 with no problems so far. I like it a lot. Hope this works in your particular case.
