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Knife tool - 3 issues
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Description

System Information
Operating system: Windows-10-10.0.17134 64 Bits
Graphics card: GeForce GTX 1080 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 419.17

Blender Version
Broken: version: 2.80 (sub 71), branch: blender2.7, commit date: 2019-05-22 21:50, hash: rBa1ad71304c2d
Worked: (optional)

Short description of error
Knife tool often creates double geometry in cut areas. Sometimes doesn't even finish the cut properly. When you zoom in during cutting and move cursor out of the model it moves the cut point to 0,0,0 location.

Exact steps for others to reproduce the error
I think everything is in the video.
https://www.youtube.com/watch?v=9U86POc_zxA

Details

Type
Bug

Event Timeline

Adam Pasek (Llamarider) renamed this task from Knife tool 3 issues to Knife tool - 3 issues.
William Reynish (billreynish) triaged this task as Needs Information from User priority.

Cannot reproduce this. Can you post your blend file for testing?

Sure

William Reynish (billreynish) raised the priority of this task from Needs Information from User to Needs Triage by Developer.May 24 2019, 11:24 PM

Indeed, Knife tool seems to perform worse with extreme wide angle view points, as in your file. Unsure how to triage.

I have the same problem.
"during cutting and move cursor out of the model it moves the cut point to 0,0,0 location."
https://youtu.be/vU5aAQU5stM

Sebastian Parborg (zeddb) triaged this task as Confirmed, Medium priority.

I can too reproduce this if I zoom in during cutting with that file.

Trying to handle this report in regards to multiple issues mentioned here:

  • the "during cutting and move cursor out of the model it moves the cut point to 0,0,0 location" issue is a duplicate of T65585 (even though this report is slightly older, we have a distinct report in T65585 which is good)
  • the "bad geometry" is also reported in T62285 (not as good as here, but still we have a distinct report which is good)

So while this is a good report, I will close this as duplicate, lets continue discussion in the particular tasks (I will will mention this report there specifically...)