Swift 3D modeling problem

I want to make a cylinder that has a trapezoidal piece taken out of it. Please see attached image. I would have done this with a subtract boolean operation in 3DMax, but Swift does not appear to have boolean.

Export your model from Max. Swift can import .3ds files.

Thanks for the reply. Yes, that would work, but I don’t have 3DMax.

Here’s a front view: