# Questions tagged [curves]

A Curve is an object that is expressed in terms of mathematical functions, rather than as a series of points such as vertices. Use this tag for any questions pertaining to the "Curve" Object type in blender.

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### Bezier curve bavel with bezier circle messes up my rollercoaster

When i move the curve up for one track every other track rotates which i don't want to rotate
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### How to convert to Mesh from Curve with Python

I'm making a bunch of abstract objects that are shaped programmatically. I use a Bezier curve, you get nice molds with few points. Then I need to convert it into a mesh object. Blender version is 2.80....
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### Any way to turn off the black lines in curve edit mode? [duplicate]

Is there any way to turn off the black lines in curve Edit Mode?
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### How to achieve random distance, rotation between copies with array and curve modifier?

I'm doing a crown, and I put the thorns on the stem with an array and curve modifier. I'd like to have the thorns to have non uniform distance and rotation around the stem. How can this be achieved? ...
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### How does one figure out how big to make an object to make it scale to fit a Curve Modifier perfectly?

Suppose I want to make a flat surface curved using the Curve Modifier; how do I do this so that the flat surface follows the curve from end-to-end exactly? I can hackily scale the flat surface along ...
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### Distributed objects python script

I'm trying to distribute objects along a curve as an add-on in a modal operator like in this link. I did it for a line an it works ok. The problem comes when I want to evaluate a curve with different ...
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### Bezier curve seems to be locked from moving on certain axis

I am in 2.81 and created a bezier curve to act as a string in a scene. However, when I go to edit the curve, I grab the end point and attempt to move it on the x axis and it won't go that way. It will ...
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### Subdivision pinched lines after deleting faces

I am trying to create the same smooth sweeps as in this photo, but the But I'm having a pinching problem when I delete my faces at the points highlighted. Is it possible to fix this? and how?
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### 'NoneType' has no attribute 'bezier_points', when BezierCurve selected

With the following code, I can export a bezier curve to a file, and with the default bezier curve it works, but as once i add points to it and attempt to run the script it gives an Attribute error. ...
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### Can you animate a beveled spiral curve into a tapered version with even thickness?

Hey there I’m trying to get this beveled spiral curve into a tapered version (using the Simple Deform modifier) with even thickness. but it’s turning out like this, ie flattened, is there anyway to ...
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### Ocean loop + Dynamic paint waves

there is a way to fix this? Blend file
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### How to rotate bezier control point (viewport not updating)

I working on a procedural system that defines two bezier curves and bevels them together. I cannot, for the life of me, figure out how to rotate the handles on the control vertices of my bezier curves....
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### How to animate ribbon unfurling?

I have to animate ribbon unfurling an box opening. Like below. Got the box part down, but I'm stuck on the ribbon. What would be the best way of going around it the ribbon. Would it be best done with ...
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### Curve modifier scales up my object on the z and y axis

I am trying to aplly the curve modifier to an object, but the object, despite following the curve, it scales up on the z and y axis. How do I do it while maintaining the object's scale? Can anyone ...
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### Why the Curve Is Uneven Thickness [duplicate]

I want to specify the thickness of the curve as shown in the following picture: However, the curve I made is shaped like a flat one, not a round one: Q.I am about to make a pedestal of a long plate, ...
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### Array + Curve modifier deformation in blender 2.81

In blender 2.81 the array + curve technique does not work as expected i've got a hedge with an array modifier and a curve modifier, to make it follow the path i want. It is working just fine in 2.80, ...
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### Hair creation from curves

Is something like this possible to do in blender? Eg. Creating bunch of curves and filling them with planes with alpha textures on them? If so, how should I do it? https://youtu.be/1zS2dqnH8Yw
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### If I convert a BezierCircle to mesh from curve, it just disappears [duplicate]

This is the curve I want to turn into a mesh: This is what the outliner looks like: Someone on this forum told me to select the BezierCircle, go to Object>Convert to>Mesh from curve But if I do ...
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### Stop Deformation on Bezier Curves [duplicate]

Real curve noob here. I'm building fan blades. I have an extruded cube and a BezierCircle. I just want to place copies of the object around the curve. But when I do wire up the object and curve It ...
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### What is the right way to change elevation of racetrack after designing it

I have been trying to create my first racetrack for the game I am developing. I have a question and I would like to hear your advice. What I am trying to do is to add elevation of my racetrack mesh. ...
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### Scaling Rather than Moving Objects when Attached to Curve

I'm following this tutorial on YouTube https://www.youtube.com/watch?v=xrFHwoewoPU And it gets to a point where I'm trying to move the tread onto the main object. The problem is every time I try to ...
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### Curve modifier skews mesh

I can't wrap my head around curves and how they deform meshes with the curve modifier. I've tried using Bezier curves, but that's just nightmarish. I have this blender file where I am trying to very ...
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### Positioning a collection of objects along a curve

Is it possible to automatically position a collection of objects along a curve? For example, I have 100 cubes (all are different) and want to distribute them evenly along a Bezier Curve. I searched ...
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### How to animate object hanging from a string?

I'd like to animate this model so it acts like its attached to a car mirror, with proper physics of course (swinging, and rotating enough to see both sides). I'd also like the top of the string to ...
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### Value sliders are too fast

I've been trying the spin tool in new Blender 2.81. I was trying to change the axis value so that I can get my desired result. But the value sliders for changing the position of the faces are ...
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### how to bevel this?

I extruded this curve out of an svg and converted it to a mesh. I cant find a way to bevel the marked edge. Both the bevel modifier and the "normal" Bevel tool dont show any affect. why? How can I ...
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### slot into curved pipe

I have a curved pipe. This pipe will ultimately be fabricated as a thin-wall stainless steel pipe. The pipe will be approximately 4" in diameter and 6' long. I would like to know how to cut a slot ...
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### Cannot make plane follow bezier or path

This is an really basic question, but I have been trying to solve it for for 45 minutes. Here is the blend file with the setup. I've tried this Why doesn't the road follow the curve? but it did ...
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### Is it possible to fit an object to an arbitrary section of a curve?

Say I have three arrayed objects: one I want to fit to 0-38% of the curve, one from 38-75%, and one from 75-100%. Or even just one that I want to fit to 40-85%. Is this possible? As it is, the "Fit ...
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### Blender 2.8 Python , Bevel from shape not working

I am attempting to make cords using python in Blender 2.8 Currently, I have successfully made it work when using a normal bezier curve that I modify along with a circle I added. (see image below) My ...
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### Extrude multiple Shapes along the same Curve

I wish to switch from C4D to Blender and I'm trying to replicate the same workflow I'm already used to before making the step. In this specific case, I need to extrude a number of different Shapes (...
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### How to import a DXF to blender 2.8 correctly?

I want to build a indoor map in web, and what I have is only a Autocad dwg file . My proposal is as follows : 1 in AutoCAD , I explode all objects ,Save dwg file as dxf file 2 Import dxf file in ...
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### Creating a spiral along a bezier path

How can I create a spiral that follows an arbitrary bezier path? Here's an example of this in Fusion 360: So, in other words, this is a bezier curve that winds itself around another bezier curve to ...
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### array and curve modifiers - rotated planes [duplicate]

I have created a simple road using path, array and curve modifiers. As you can see planes on the corner are rotated: I would like to create a road which change direction on the z axis but without ...
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### Curves and curve modifier is a nightmare [duplicate]

I try to learn the basics about curves and curve modifiers. To do this, I tried to make a zipper. It was a catastrophe. Doesn't matter what tutorial i follow, the following things (one, more, or all) ...
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### Grease Pencil and also curves don't appear

whenever i try to draw with the grease pencil or use a curve it doesn't show up in the view port, it dose shows up in the library. I have tried restarting and still nothing works. I would love any ...
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### Why can't I snap curves vertices to vertices?

Widgets with help of which you deforming curve became orange instead of red. And magnet is on and mode is set to vertices. But vertices can't be snapped to each other.
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### why fit curve not working

I have a mesh with good verts. I want to fit it to the curve. I have set all the parameters. I dont want to have array and adjust the curve. Whats missing why its not taking the turn and making copies....
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### Making Scales on a Dragon

I'm trying to make a dragon for 3D printing. I've previously made similar creatures by making a single scale, then, through a long series of Array and Curve modifiers, have created my dragon body (as ...
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### How do I use IvyGen to cover a house in vines?

I want to cover a house with vines, but I can't figure out how to use IvyGen. I just recently learned to use sapling, and IvyGen works similar to it as far as curves, but the rest I can't figure out.
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### problem with the curve modifier

i am trying to build a road with guard railing.modeled a road and railings seperately like this-- then applied array mod on both of the objects and it looks like this-- then i tried to bend the road ...
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### Creating a smooth spherical surface

I am designing some parts for 3D printing and I have been banging my head for several days already trying to accomplish the following: I have a "frame" that looks like this: I am trying to create a ...
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### Convert gpencil to curve, python, crash

I'm not well versed in scripting and I'm trying to write a script that involves converting grease pencil to curve, I have discovered that the operator ...
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### Animation Nodes - Blend distribution of objects on a curve into another curve few times

How can i distribute a object on a curve, and from one curve to another few times ... a text for example...
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### Rig & Weight Paint Bent or Curved Model

I have a mesh with bent geometry, and I would like to make a proper rig and weight paint that straightens the model when the bones are straight. I would like to know if there is a technique in ...
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### Why is my road offset from it's parent bezier (wrapped to a sphere)?

I'm currently combining this tutorial with this answer in an attempt to make something like this: Instead, I'm getting something like this: I'm using two simple deforms in order to turn the bezier ...
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### Tentacles Curve Wave Effect

Anyone have any ideas on how to animate curves to perform like a wave effect instead of this side to side animation I did? Took me a while to find an example but found one by James Curran: