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9 Modeling Tips in Cinema 4D

Create better models of the polygonal variety in Cinema 4D

You might be rocking the runway with your Cinema 4D models most of the time, until… you don’t.

Wearing black shoes with a brown belt is the real tragedy here...

Let’s look at how to put glam back in that game with these modeling tips in Cinema 4D.


Modeling Tips in Cinema 4D

Here's a few of my favorite modeling tips in Cinema 4D.


A big part of modeling is selecting the parts of editable geometry you want to work with. Fill selection lets you use edge selections to isolate polygons easily. Make looped edge selections around what you want to poly select, then switch to fill selection and hover over each isolated area to select the polys.

Grab big chunks of geo with Fill Selection

Another way to select sections of your model is thru the phong break selection tool. Phong who? This detects breaks in the phong shading of your model to define the selectable areas.

Pro Tip: Be sure to use the tag override and use lower phong angles to narrow the selection.  


So you’ve got the Extrude object to extrude splines, but what about flat editable geometry? If you have the Studio version of Cinema 4D, just parent the geo to a cloth surface for a non-destructive & animatable extrusion.

Model flat then extrude, bend or whatever later.


One of the easiest ways to create better looking models is to add bevels. Nothing in real life has razor sharp edges so why should your models?

Bevels allow for geometry to catch highlights and add a level of detail that makes it look less digital. Of course you can model this into your editable geometry with the bevel tool, but an easier way to add a bevel is thru the Bevel deformer which keeps it nice and non-destructive allowing you to fine-tune its look. Simply add the Bevel deformer as a child of the main object.


It should go without saying that modeling parametrically or non-destructively as possible is always a good way to go since you can always get back to a previous state. But if you need to do some mesh surgery for greater detail or want to lighten up your scene’s playback speed, you’ll want to work with editable geometry. But before you hit that ‘C’ key, make sure to save a copy to get back to, either in a new .c4d file, or stashed in a hidden layer.


A good modeling tip in Cinema 4D is to only make meshes as dense as necessary. It's generally a good thing to have lots of geometry around areas where deformation will happen. However, for rigid bodies knock that geometry down till you have the bare minimum.

Modeling Tips in Cinema 4D - too dense.png
This should never be a thing if it just sits there.


By keeping it light, your scene’s viewport stays fluid and if you need to bump up the resolution, add a Subdivision Surface object to the mix. Set the subdivision editor to 0 or 1 as you work your scene and 2 or higher for subdivision renderer.

Modeling Tips in Cinema 4D - before SDS.png
Before SDS: nice & light
Modeling Tips in Cinema 4D - after SDS.png
After SDS: ready for rendering

At each level, subdivision surfaces will take a polygon and divide it into 4 with the end result smoothing and rounding your geometry. So smoothing a cube will round it into a ball as you increase levels. Neat!

You can select points, edges and polygons and ‘crease’ or weight them so they don’t get rounded. Simply select the components of your base mesh, hold down the period key as you drag left and right. All the weighted information gets saved in a new SDS Weight tag.  

Subdivision surface modeling gets pretty deep so here’s a little rabbit hole for you dive into. And if you really want to go the full monty MILG 11 is where it’s at.  


Where geometry is complex or dense, you can use falloffs found in the deformers and mograph effectors as modeling tools. How? Take a tire rim for example: What if you wanted to introduce a twist to the spokes of the rim? You could do a soft selection with the rotation tool, but that’s destructive. Instead, put a twist deformer and use a cylindrical falloff to only affect the spokes and not the entire geo of the rim.

Likewise by using a mograph plain effector in point deformation mode and as a child of the rim, we can push and pull geo and limit what geometry is affected by using cylindrical falloff.  

To really get fancy, you can play with the spline parameters of the falloff. By the way, did I mention this is all animatable?!


One of my favorite tools for modeling is a free plugin from Welters Cinema 4D plugins called Transform. With Transform you can easily take polygon objects or selected geometry and shear, non uniformly scale, and rotate on edges all using the transform display cage around the object. Welter's page also has a bunch of workflow gems (including the indispensable UV to Object plugin) so be sure to check it out.


If we’re honest, we’ve all wrestled with trying to get a simple 5 point star from a spline object to point upward. The fix is simple, rotate the 5 point star -90 degrees on the rotation B coordinate. But now although it points up, the green Y axis tells us it’s really on its side. To fix this:

  1. Make the star editable
  2. Enable axis modification mode
  3. In the coordinates manager, zero out the rotation B value.


Bonus tip: if you need this object often, save it to your library. With it selected, in the object manager go to File > Save Selected Object As.


Take the star we just made and throw it into an Extrude object. Now add a bend to it and what do you get? Something pretty blocky.


To smooth this out we can add more generated geometry by changing the number of intermediate points on the Star spline. As a result the bend has more to work with. But the center of the star is still pretty blocky.  

better, closer, warmer...

To add more geometry to the caps of the extrude object, change the cap type to ‘Quadrangles’ & enable ‘Regular Grid’. Yes, this introduces triangles where all quads would be better, but unless we want to take the time to make this editable and manually add our geometry with the Polygon Pen tool, this seems like a speedy alternative.

Take a bow you star you!

As with all things in Cinema 4D, there are more than a few ways to accomplish something and modeling is certainly no different. Hopefully these modeling tips in Cinema 4D will help you make some polygonal magic.

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