Creating Rope w/ Parameters

Hello All,

I am trying to model a piece of rope. I need it to conform to the 2D drawing I have created in AUTOCAD.

What is the best way to do this??

I have tried the “Twist” command and it does not line up perfectly. The piece is about 44 inches long as well so once I use the twist command the edges become all edgey and rough.

Any help with this would be greatly appreciated…

Thank you,

The problem may come from the fact that a rope won’t look like that in reality. There will be no straight lines going from one side to the other.

Thanks for the reply, but all I really need if for the curved edges to line up. The straight interior sections can be adjusted to whatever we need them to be.

Is there a way to measure those edges and then use the twist command to build them?

I don’t know what you want to do with the result but you could try to just sweep a circle with diameter .24" (or use pipe) around a helix. I suppose a rope is made up from several individual threads but that might not be necessary to model… (?)

What is the best way to develop a helix or a spiral with a certain amount of turns AND a certain pitch?

Thank you

You’ll need the pitch to be the diameter of the wire.
The number of turns is then just a function of the length of the axis.

Wim Has a good place to start but a true rope has two or more separate pieces that twist together. If you do what he said you get the look but not a true rope. I will play with this a bit and see what I come up with.

If your just going for the look I would do exactly what Wim said.


Do you really need to “model” it? I just spent 2-1/2 years working with rope and I just used texturing, from any kind of distance it looked pretty darn close to the real thing. The tricks were that I made bump map like below(shrunk just to show for example) by modeling a bunch of flat pipes, and using some scripting to set the UV mapping based on the actual rope length so that it would tile cleanly and with close to the real proportions.

There was a different much fatter sort of rope used occasionally that I more brute-force modeled with the help of Flow, but that had such an impact on render times that it was used very sparingly.

Technically it needs to look like rope because it’s simulating a type of moulding. See below:

We are going to CNC cut that 3D model to fit inside a door panel like what is shown here. It has a specific corner detail that we are trying to obtain. So I have drawn out the front profile in 2D CAD now just need to find a way to make it look like the attached picture.

Thanks everyone,

How about just creating one of those shapes with sweep2 and then repeating it? Like attached.sweep2.3dm (325.6 KB)

It required some use of matchsrf before I was able to join surfaces, but that’s the general idea.

Cuerda de ahorcado con historial.3dm (1.6 MB)
This is made wih 2 helices _AroundCurve , History on

Can i extend a curve following a path curve ?