the knife tool does not work #94055

New Issue

stefano · 2021-12-14T12:00:54+01:00

stefano commented

2021-12-14 12:00:54 +01:00

System Information
Operating system: Windows-10-10.0.19043-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 3080 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 496.76

Blender Version
Broken: version: 3.0.0, branch: master, commit date: 2021-12-02 18:35, hash: f1cca30557
Worked: (newest version of Blender that worked as expected)

when i project lines on a plane i get an error message

I draw two planes. I divide the first into squares (ctrl + r), I delete only the faces, I project it on a second plane. error
p.s.
on blender 2.93 it works perfectly

**System Information** Operating system: Windows-10-10.0.19043-SP0 64 Bits Graphics card: NVIDIA GeForce RTX 3080 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 496.76 **Blender Version** Broken: version: 3.0.0, branch: master, commit date: 2021-12-02 18:35, hash: `f1cca30557` Worked: (newest version of Blender that worked as expected) when i project lines on a plane i get an error message I draw two planes. I divide the first into squares (ctrl + r), I delete only the faces, I project it on a second plane. error p.s. on blender 2.93 it works perfectly ![Screenshot_1.jpg](https://archive.blender.org/developer/F12739160/Screenshot_1.jpg)

stefano commented

2021-12-14 12:00:54 +01:00

Added subscriber: @stefanocioncoloni

Sergey commented

2021-12-16 10:23:28 +01:00

Added subscriber: @randum

Sergey commented

2021-12-16 10:23:28 +01:00

Do you use knife project tool? If yes then it seems you didn't select cutting object properly.

From the documentation:

To use Knife Project, first in Object Mode select the object to be cut, then in Edit Mode, select the cutting object (Ctrl-LMB), and choose Mesh ‣ Knife Project.

At list it looks that the message is about it.

I tried this and this only works if mesh to be cut has faces. Don't know how it used to work in versions before 3.0

Do you use `knife project` tool? If yes then it seems you didn't select cutting object properly. From the documentation: > To use Knife Project, first in Object Mode select the object to be cut, then in Edit Mode, select the cutting object (Ctrl-LMB), and choose Mesh ‣ Knife Project. At list it looks that the message is about it. I tried this and this only works if mesh to be cut has faces. Don't know how it used to work in versions before 3.0

Jesse Yurkovich commented

2021-12-18 12:01:06 +01:00

Added subscriber: @deadpin

Jesse Yurkovich commented

2021-12-18 12:01:06 +01:00

Changed status from 'Needs Triage' to: 'Needs User Info'

Jesse Yurkovich commented

2021-12-18 12:01:06 +01:00

Indeed it sounds like the change in Knife project workflow is the cause here. Furthermore, I can correctly Knife project that grid (with only edges) onto a plane correctly. Let us know if you are still running into this issue -- provide a simple .blend file showing your problem exactly if necessary.

stefano commented

2021-12-18 14:03:24 +01:00

This comment was removed by @stefanocioncoloni

*This comment was removed by @stefanocioncoloni*

stefano commented

2021-12-18 14:15:32 +01:00

i used the same file with 3.0 and 2.93. Version 3.0 does not allow the knife, the old one does{F12761050}

i used the same file with 3.0 and 2.93. Version 3.0 does not allow the knife, the old one does{[F12761050](https://archive.blender.org/developer/F12761050/TMP.blend)}

Jesse Yurkovich commented

2021-12-18 22:38:25 +01:00

Again, this is a change in workflow from previous versions -- do not enter edit mode with both planes selected, only enter edit mode with the plane you want to cut. Try the following:

Select only the "Plane" object
Enter edit mode
Select "Plane.001" from the Outliner (or with Ctrl+Click in the viewport)
Knife Project

Again, this is a change in workflow from previous versions -- do not enter edit mode with both planes selected, only enter edit mode with the plane you want to cut. Try the following: - Select only the "Plane" object - Enter edit mode - Select "Plane.001" from the Outliner (or with Ctrl+Click in the viewport) - Knife Project

stefano commented

2021-12-18 23:50:04 +01:00

I misunderstood your explanation, thank you very much

Jesse Yurkovich commented

2021-12-19 06:40:07 +01:00

Changed status from 'Needs User Info' to: 'Archived'

Jesse Yurkovich closed this issue

2021-12-19 06:40:07 +01:00

Jesse Yurkovich commented

2021-12-19 06:40:07 +01:00

It sounds like your issue is resolved then? I'll close this task for now.

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the knife tool does not work #94055