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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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22 views

Knife tool keeps popping up

I've accidentally clicked something with the mouse and now when ever I left click the knife tool comes up. I've tried pressing esc, however when I left click again it comes up, I've tried load factory ...
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1answer
94 views

How to get rid of this poles?

How do i get rid of this pole? I tried to redirect edge flow using the knife but it distorts the curved surface. Is there a way around this? This is the shape I'm trying to model.
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2answers
474 views

Connecting cylindrical hallways cleanly

I'm a newbie modeler and having trouble connecting two cylindrical hallways. Appreciate any help given! So here's the problem, I have a torus and a cylinder both acting as hallways in an environment I'...
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3answers
33 views

Create cut from the wall exactly 0.3m in

I have a 3d plane as the floor that's an odd shape. I'm trying to create walls in from the side of exactly 0.3m. Attempt 1 Use knife tool. This works but don't know how to set in from the edge exactly....
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13 views

Knife Tool not working in a scene

Strange thing: The knife tool does not work in one scene (meaning I am not able to click anything, the knife just hovers over the mesh). But... it works fine if I am opening another scene and apply it ...
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17 views

Where does Blender store the vertex cuts the knife tool is making while it is making the cuts?

Once the knife cut is finished, the vertices it's created are easy to find. What about when the knife tool is actively cutting something, as in when the cursor has become the knife tool and clicking ...
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2answers
63 views

Scripting - Where is data not shown in the “Info” panel shown?

I notice that Blender only logs certain things in the "Info" panel. Is there some other place that they log data(such as if one were to have 3 vertices selected, where would they store that ...
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2answers
58 views

how to cut a sine shape on a cylinder

Trying drawing a sinelike shape on a cylinder Hi, I am trying to draw the picture below. I tried using boolean modifier on the cylinder but, I couldn't create an object that would like on the picture ...
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1answer
25 views

I dont seem to have the bisect tool

I also checked the add-on list for the bisect tool figuring it was probably unincluded but found no add-on as well so I am confused.
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1answer
20 views

Changes made to mesh does not appear in final render but appers in viewport render

I did some detailing on a mesh with the knife tool, the details appear in the rendered viewport but when I render it out, either in cycles or eevee the details dont show, it renders the mesh how it ...
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1answer
42 views

Snap vertex without deforming mesh

Summary of Problem I would like to be able to move vertices, without deforming the surrounding mesh or edge, while snapping to another vertex or move it by a specified unit distance (Not percentage). ...
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1answer
40 views

Cutting a solid surface to make a overlapping junction

This one is a bit tricky. I'm building a RC submarine in Blender so that I can have it 3d printed. I want to have a removable "cap" so that I can have access to the electronics inside, ...
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39 views

Knife Project mesh without faces

Is there a way to cut these dome shaped edges with another mesh/curve? Knife project, Bisect and Booleans only work with meshes that have faces.
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25 views

Knife tool won't work with specific blend file, works with others

Running 2.83.0 on OSX. I have a .blend file with a scene I'm working on. For some reason, I can't use the knife tool on any object in the file. In edit mode, when I hit "K" or select the ...
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2answers
20 views

Wierd shading when cutting faces

I'm a blender newbie. I'm trying to build an helmet, and I've got to the point where I have to cut the global object I've built so far to get the visor. After creating the bulk shape (basically a ...
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0answers
18 views

There's a problem with meshes in my Blender

I'm relatively new to Blender, but have become pretty good at modeling in the past month. But each time I edit a mesh, a problem occurs. Let's say, if I wanted to remove vertices in Edit Mode, It'd ...
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1answer
20 views

Why do grey faces appear on inset faces after using the knife tool?

When I use the knife tool with angle constrained on an inset face it leads to these weird grey patches appearing on the face and I don't know what they are. Is there any way to use the knife tool on ...
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23 views

Knife tool is not working

Knife tool isn't working.It doesn't show any selection when i hover over a vertice to start the cut. Anyone knows how to fix it.
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0answers
21 views

Using Knife_project in command line

I have developped an addon and I want to call a few function from command line. Everything works fine except when I'm using knife_project. Here is my code: ...
2
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2answers
68 views

Editing issues after knife project

After knife projecting, and heading back into edit mode, I find that all the vertices are invisible, and I get a very peculiar way of moving/editing things which is highly inconvienient. Here is an ...
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1answer
84 views

Is there an addon to improve the knife tool?

I see how to use the knife tool to draw shapes by clicking points along, say, an imported image in the background. But I want to know if there is a way to draw 2d shapes with precise angles (90 degree,...
2
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2answers
90 views

Cut/mask multiple planes along a circle at once

My challenge is to create some type of a radial chart so I created planes with an array. I scaled the planes randomly to generate "fake data". Now I want to cut all the bars (planes) along a circle ...
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9 views

how can i intersect an object with a 2d plane?

fairly new blender user.. been searching how to do this.. i need to add the edges and vertices of the plane on the cube. i need to find a way to remove the top part exactly where the plane meets, ...
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3answers
54 views

How to bevel a vertex corner that is between a circle and straight?

Only way I can imagine doing it is by manually adding a circle and editing it into the shape. Which is slow. Same with knife project and that also creates other issues and is also slow. Maybe there is ...
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0answers
38 views

How knife project a building onto a plane?

I want to knife project my building onto a plane so that I can easily make a roof. However when I knife project the result I get the following result: The steps I take are: In object mode I select ...
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0answers
94 views

Blender knife tool not working as expected

I'm trying to create vertexes using the knife tool; the object in perspective mode is: in plane after using knife: A point is always created on the back edges: It's incredibly frustrating to have ...
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14 views

Projection Cut around a complex Shape

i´m currently modeling a PS4 Controller. I nearly finished my work on the model, but theres just one last step, which im stuck with: I want to create a cut around the controller, that later will ...
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0answers
27 views

Cut Custom Shape into Side of Cylinder

I am trying to model a British Sterling L2A3 & I'm having serious issues with modeling the ejection port. The main body of the weapon is a cylinder with many different types of cuts, and I ...
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0answers
123 views

Blender 2.8 snap, knife tool does not work properly

Here is my question: https://stackoverflow.com/questions/60684130/blender-2-8-snap-knife-tool-does-not-work-properly Vertex extrusion to edge with snap enabled has gap (snap vertex to vertex is ok) ...
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0answers
32 views

Smoothing Uneven Concave Surface

After applying the boolean modifier for the cut, I need to clean up the scruffy looking concave section of this object. There was a method on youtube using the knife tool plus some additional ...
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0answers
28 views

Is this valid geometry? Any problems for games?

I'm looking to make low poly models for games so I'd like to keep poly counts minimal, but there is one thing I've done with the knife tool and I'm not sure if it causes any issues. I honestly don't ...
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0answers
18 views

How to cut extra piece of face on intersection with other face? [duplicate]

There is no common edges or vertices on intersection
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1answer
72 views

Airplane windshield

I’m trying to create a high detail 787 and I am currently on the windshield part. My question is how do you properly model a knife project object to work on all axis? Here’s my current window cutout: ...
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0answers
34 views

Knife Tool creates redundant edges and faces

When I use the Knife tool, Blender 2.81 create edges and faces which I don't want. How can I only create the edges and vertices which I draw with the knife tool?
2
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1answer
51 views

How do I attach floating vertices to the mesh?

I am trying to make a turbine with cuts in the sides. I did this with the knife tool and copied the vertices made with the knife tool to the areas marked on the picture. At the place where I used the ...
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1answer
484 views

How to use one object to cut a hole into another one [duplicate]

My issue is that I have 2 objects in edit mode, I want to use the second object to cut the first one to make a hole. I hope the image can make what I want a little clear because I don't find the ...
2
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1answer
76 views

The knife tool won't show the exact result that was done before pressing enter

So the first picture is right after I selected where I will cut, and the second picture is after pressing Enter/Space Bar which should apply my previous result to the world. But it is not what I asked ...
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0answers
33 views

Is there a way to bisect using a compound line or curve?

Right now, the bisect tool only works with a single straight line. I'm just wondering if the the question above is possible and, if so, how?
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1answer
2k views

Knife Project not available 2.8 (trying to cut two shapes out of one)

For some reason my knife project is not available when I search it, the only thing that comes up is knife, I am trying to cut one shape out of another shape but keep both shapes in tact so I would ...
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0answers
31 views

Why can't I use my knife tool project wide?

Been using Blender for years, but for some reason in this project I'm working on I can't use the knife tool. Its all low poly stuff and I've used the knife tool in the project since I started it. At ...
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0answers
20 views

Is it possible to Cut a curve in a sphear?

I want to cut a semi-circle curve into a sphear then apply solidify modifier. However i always end up with crimping along the curves. Is it possible to cut smooth curves in blender??
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0answers
19 views

How to cut edges with knife without deforming new vertex and edges?

I'm trying to cut a ring with knife tool in a rigged mesh, but new vertex and edges move to another position, I used to do this procedure but I didn't have problems, I don't know if I pressed a key, ...
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0answers
77 views

Attach road to terrain in a single mesh

I have the following terrain and road (extracted from OSM) i want to combine them so i can have 'nice' quads for the road and borders mixing nicely with the terrain; and combine everything in a '...
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1answer
113 views

knife tool not ending

I'm just starting to use the knife tool and, after I finish using the knike tool, I can't seem to get it off of the knife tool. How do I get it off of the knife tool?
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0answers
22 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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2answers
21 views

Pushing back part of extruded region after using knife tool

Is there an easy way of pushing back the faces on the left part on the screenshot (selected faces) to the place the original faces were extruded from? Result should be like the one the right side. The ...
2
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1answer
185 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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3answers
2k views

Making a hollow cylinder - Blender 2.80

I am trying to recreate the C64 logo in 3D, which roughly looks like this: C= My thought was to create a cylinder the size of the C, then create a second cylinder the size of the inside of the C, lay ...
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1answer
131 views

How to fix weird edges when doing knife project?

I am quite new to hard surface modeling but wanted to get into it a little bit. I am doing something like a Porsche 911 back and wanted to cut out the bonnet area. Since I thought Knife project would ...
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1answer
48 views

Cut out everything within a volume. Is it possible?

I have a very large model of terrain, spanning several thousand kilometers, with meshes of buildings and trees scattered across it. I'm only interested in one single area of the terrain, and I want to ...