Questions tagged [knife-tool]

The Knife Tool cuts new edges into meshes, adding vertices to user-defined points regardless of existing topology. The Knife Project Tool projects the topology of one object onto another, using the current view angle. Use this tag for questions pertaining to the Knife Tool and the Knife Project Tool.

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1answer
273 views

How to subdivide concave face into quads

I'm aware of bpy.ops.mesh.vert_connect_concave() and the result is similar to what I'm looking to implement. However, with ...
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0answers
60 views

How to use knife tool properly?

I am new to blender. Is there a way to make knife tool cut exactly along the axes?
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0answers
158 views

knife_project in --background

I like to use the function knife_project() in a command line : blender.exe --background --python ... but bpy.ops.wm.redraw_timer(type='DRAW_WIN_SWAP', iterations=1) isn't avaible. I try to use ...
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0answers
951 views

Merge vertex into an edge

I'd like to merge a vertex into an edge without subdivide the edge and merge the vertices; i usually use the knife tool, create a second vertex in the edge, set "cursor to selected" to the first ...
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1answer
42 views

Problem with Intersect (knife) - making extra cuts in mesh

I am trying to make a thread around a cylinder by cutting faces at the intersection. The cut tool makes extra vertices and connects vertices in random places. I also tried using the boolean intersect ...
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1answer
65 views

knife tool 2.8- used in past with no problems

Vertices are not appearing when I drag with the knife tool across the object in edit mode. Am I missing a toggle somewhere? I would include a picture/screenshot but wouldn't really show you anything ...
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1answer
43 views

Adding a vertex onto an angled edge in precise X position

I'm designing a part for 3D printing, but I do not know how to cut an angled edge at a precise absolute X position. I marked in red the place where I would like to insert a vertex. It's exactly 2 ...
1
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1answer
192 views

Knife tool with bmesh API

I need to find the intersection curve between two (open) meshes, and I can do that interactively with the knife tool. In search for a way to do it from a script, I came across the following highly ...
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0answers
91 views

How can I add/cut face into an inside face of a cube?

I'm unable to cut a face into an inside face of a cube as it's not really accessible, can't move the view there. I was trying to zoom in and navigate inside of the cube in order to use a plane to ...
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0answers
96 views

Cut and separated object don't fit in real life

My problem is with cutting one big irregular pipe in two pieces which are printable in SLA 3d printer. After have it cut with "knife" I merge two edges with "bridge edge loops". The procedure is ...
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0answers
626 views

How do I edit a face symmetrically, or copy and mirror it?

I want to cut out the shapes seen in the background of the image below, onto the plane: I want to do it symmetrically, preferably using the knife tool. The mirror modifier won't work here; I only ...
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18 views

Can i select “extra edges” in ngon by script or special command in blender?

I have a problem. Maybe somebody can help me. I want select man on plane after knife projection without these "extra edges by script or one command". 1) Can i select "extra edges" in ngon by script ...
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29 views

Break up Model and Texture For Unreal Engine 4 Import

I have a large model (.obj file) that was generated by another piece of software and represents a real world location. I also have a very large texture (.jpg file) that was created from images of that ...
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0answers
48 views

3D Jigsaw Sphere

I've made a sphere which is UV wrapped with a picture of a world map, and then made hollow by using the 'solidify' modifier. I was wondering if I can break up this hollow sphere into a 3D jigsaw ...
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2answers
65 views

Why I can't cut there with the knife tool, I want to make a quad out of this n-gons

Why I can't cut there with the knife tool, I want to make a quad out of this n-gons
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0answers
44 views

Split unjoined mesh into smaller grid based chunks

I have a large blender scene consisting of different objects like streets, trees, walls, roofs, etc. all created from an openstreetmap file imported into blender. I want to split the complete scene ...
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0answers
72 views

Non-manifold, bad contig Edges and Sharp Edges on simple basic geometry

I have had issues trying to produce clean geometry for 3D printing for what is simple geometry. I check wether my mesh is clean or not using the 3D printing addon. Here is a step by step simple ...
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24 views

How can i get 256 equal objects from one regular terrain object?

I am trying to do manuel but it is so tiring. I will also show you what i want to do. I think i need to do when object mode but how :(. When 8x8 , it was easy but 16x16 so tired.
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74 views

Could a knife/carving tool be added to Blender's grease pencil?

https://www.youtube.com/watch?v=ETpas5GnRfc&t=7m56s The above video from 7:56 to 8:10 is the functionality I'm referring to. Instead of erasing and redrawing a line I don't like, or sculpting it, ...
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0answers
316 views

Knife tool not working on certain objects

I'm trying to cut some planes using knife tool in edit mode. I'm able to do it to some objects but with other objects I can't click on anything with the knife tool. The red square doesn't appear when ...
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0answers
26 views

Using edge-loops/knife tools on character model?

I am doing an example model through a workbook, and I am stuck at a specific section. This section is asking me to add edge-loops to my model (creature figure). I can not get the edge loops to work ...
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0answers
133 views

Fixing jagged knife project circle

I'm trying to think of ways to fix a circular shape that I projected onto a half sphere and I can't seem to be able to fix it using circle tools or modifiers. If you look closely you can see the ...
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0answers
223 views

I cannot cut using knife tool to make a polygon with 4 vertices

I have started using blender today, I saw a video on Youtube and was trying the create a similar model but I am unable to cut the vertices to make it a polygon using knife tool. Whenever I hit Enter ...
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0answers
373 views

Blender exported mesh extremely deformed

After exporting my mesh to FBX form to test out my sails in physx clothing, I noticed my mesh was terribly deformed. There were a lot of random spikes and abnormalities that appeared in the main hull ...
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1answer
114 views

3D Connexion Space Mouse stops responding during Blender operations

As the question title suggests, I have a minor problem with Blender's implementation of Space mouse/3D mouse control. I finally got the actual operation of the 3D mouse to be like I want. Except ...
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0answers
621 views

Intersect (Knife) not working correctly

I want my mesh to connect so I attempted Intersect (Knife). As you can see these edges are not connected, I pulled it away for the picture so you can see the topology. So I selected these faces and ...
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1answer
419 views

Messed up Topology (Shading?) due to the usage of the Knife Project Tool

Dear Blender Stack Exchange Community, After trying to model a sword (after a concept art) I did run into some issues after using the Knife Project Tool. I am trying to add some Screws using the ...
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0answers
132 views

How can I Knife Project only selected polygons, rather than the whole object?

So I'm trying to knife project a circle here See the circle? Well I'm trying to cut it into the blue part. But it'll cut it into the pink and green as well And even still, the circle doesn't even ...
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0answers
276 views

Knife project not working when using imported .svg curve

I am trying to import a .SVG curve and use it to cut shapes into a robot's mesh that I am modeling. After importing the curve and following Thom Blair III's advice from this question, the result ...
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264 views

Was the knife cut tool changed?

Did knife cut tool change its behavior from 2.5 to 2.76? I noticed, that in Blender tutorial, the behavior of Knife Cut tool is described differently, than I see. Particularly, in "exact cut mode" (...
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1answer
41 views

Turn off Knife cut “auto complete” setting?

Everytime i use the knife tool, it wants to auto complete and i just want to make one line, non of the short cuts get rid of it either.
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1answer
213 views

Odd Vertices When Using The Knife Tool

When I use the knife tool on my mesh, any face connected to the cut becomes "incorrect". (I don't know the true term) The underside of my mesh was smooth before I cut the mesh. Now, there are odd ...