Zero to VR: Day 5- Using a Boole to Cut out Shapes

I’m starting at ground zero with no coding experience. I’m trying out 3D modeling to see if I enjoy it, and from there I’ll make my 3D model VR-ready. Today is day 5 of my journey.

So I have this Japanese arch completed from day 4:

In the photo I’m recreating, the top black part of the arch isn’t very visible:

In an actual arch though, there’s an inward curve.

Sometimes (okay, almost every single time) when I try to do something in C4D for the first time, it fails and I have to think of another way to do it. I’m letting you know this in case you’re starting C4D for the first time and you feel like you’re the only one who can’t seem to get anything right. You’re not alone!

I’m going to try to use the knife tool to create that inward curve today. (spoiler alert, it’s not gonna work!)

So to start, I selected the top black part of the arch and pressed “c” on my keyboard to make it editable.

I then changed my layout in the upper right to Modeling (in the picture I’ve put a red box around it so you can see where it is) and then I went to the knife mode at the bottom (which I’ve also highlighted for you).

So I tried the knife tool but it wouldn’t create a curved hole in my object like I needed.

So… that was a fail.

So after doing some more researching, I’m going to try the Boole option.

Using the Boole Option (this one worked!)

So first I created the shape I wanted to cut out of the top arch. In this case, I used the oil tank shape and stretched it/otherwise altered it to create what looked like a proper cutout on top of the arch.

I’ve added some lights just so you can see where I am going to cut the shape out to create the arch.

So then to cut the shape out, I created a Boole like in the picture below

Boole, yo

And then I arranged the top black arch under the boole, putting the oil drum below it.

Bam! Now I have a cutout shape that has created a lovely inverted arch on the top black part of my Japanese arch. Only took me an hour to do… someday I’ll get better at this!

On an unrelated note, I arrived in Tokyo yesterday.

A cold rainy night in Shinjuku


  • If this is your first time using C4D, you’re going to fail a lot. I think everyone does when they’re learning this for the first time, so don’t feel like a failure if you’re dealing with a steep learning curve
  • You can use a Boole to cut out shapes from existing shapes
  • To do this, make the shape you want to cut out, put it in the larger shape, and then place both under a Boole

I’ll see you tomorrow for day 6!