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I am using 4.1 stable and I noticed this morning when trying to create a ring with multiple mesh objects that when I try to join the objects to one for 3d printing blender crashes. I typically use Ctrl J to join meshes but I also tried Boolen Union (ctrl shift numpad +). Is there some setting I had set wrong in blender to prevent joining meshes? The objects don't have any modifiers on them

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  • $\begingroup$ Worked fine here when joining all the objects to 'rounded Band' in one go. Select All, deselect the camera, Shift-select the band then Ctrl-J. (Blender 4.1.1) $\endgroup$
    – John Eason
    Commented May 1 at 18:16
  • $\begingroup$ Interesting doing it all in one go also just worked for me...but when I try to do it in parts it crashes $\endgroup$
    – AP Gems
    Commented May 1 at 18:20
  • $\begingroup$ I can confirm, doing it piece by piece makes my Blender crash as well. Honestly I do not think this is a matter of "doing it wrong", because if you use a tool incorrect it should only give no result or not the desired result. Crashing should not be Blender's answer to an incorrect use... I would understand it if it would require too many resources that it crashes, but I do not think this is the case since joining all at once works...? I would rather file this as a bug report. In my test, joining two objects always works. Then selecting another and trying to join with the previous, it crashes. $\endgroup$
    – Gordon Brinkmann
    Commented May 2 at 6:58
  • $\begingroup$ But it seems to be a problem with the objects. Appending them all in a new file makes Blender crash as well whenever you try to make a second Join operation. But it is not a bug in 4.1.1 itself, joining more than once works in a new file with new objects. $\endgroup$
    – Gordon Brinkmann
    Commented May 2 at 7:08
  • $\begingroup$ I think the problem is from trying to join multiple objects that had modifiers applied to them. I was able to join 10 cubes piece by piece but 10 cubes that I applied modifiers to caused blender to crash $\endgroup$
    – AP Gems
    Commented May 2 at 16:21

1 Answer 1

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  • Download latest experimental Blender from https://builder.blender.org/download/daily/
  • Don't load previous settings.
  • Try doing the same with the least amount of off-topic steps.
  • Still crashes = report as a bug. Blender must NEVER crash (Blender devs see every crash as a bug)

If it's not too much of a problem, try disabling all the non-default addons that you have and try replicating the issue in a fresh file. Overall, this really sounds like a bug. Don't forget to report.

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