Using Solidify with Boolean modifier closes hole / unexpected results #80548
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Using Solidify with boolean modifier closes hole / unexpected results
I'm using Blender 2.9, Ubuntu 18.04
I was testing the differences between 2.83 and 2.9 using the Solidify and Boolean modifier and found an issue with some objects.
I was following this video
https://youtu.be/qEtIACrEk-I?t=229
I tried to increase the Thickness value gradually and the hole closes up before I get to 0.2mm for thickness see test1.gif video / animation below
vokoscreen-2020-09-06_22-11-37.mkv
I also tried Flipping normals but that prevents the bolt threads from increasing in size to 0.2mm see test2.gif video / animation below
vokoscreen-2020-09-06_22-15-33.mkv
I've also attached the Blend file
issue1.blend
Added subscriber: @Still
Added subscriber: @iss
Changed status from 'Needs Triage' to: 'Needs User Info'
Please download development build from https://builder.blender.org/download/ and use exact solver method on boolean modifier. Does that olve your issue?
The issue is still happening using the version you told me to try 2.91 alpha see animation / video attached / File
issue1.blend
vokoscreen-2020-09-10_11-06-19.mkv
It also has issues when I try it with flipped normals enabled see video / animation below
flipped normals 2020-09-10_11-20-04.mkv
Added subscriber: @AmosManneschmidt
In both those gifs "mode" is still set to "simple." Try "Exact."
Note that exact calculation are considerably slower than simple floating point boolean operations and if the solidify modifier is producing a self intersecting mesh, you will also need to enable the "self" checkbox on the boolean or it still won't work. Enabling self intersections is also MUCH slower. Expect to wait like 15-30 seconds.
Thanks but I just found a bug with that to if I try and change the "Thickness" value more than twice It causes Blender 2.91.0 alpha to fully crash. But it is an Alpha
Can you report crash? We need report for alpha versions too.
I forgot to say, that you also need to enable "Self" checkbox to allow self-intersections. That way this case woks for me pretty well. It's slow though, but it is a limitation.
Ok should I start / open another ticket for the crash? or just edit this one
Open new report
Changed status from 'Needs User Info' to: 'Archived'
No activity for more than a week. As per the tracker policy we assume the issue is gone and can be closed.
Thanks again for the report. If the problem persists please open a new report with the required information.