In this tutorial I will show you how to make a strap like the one shown below in 3ds Max (Fig.00).Â
I will assume you already have a basic knowledge of how 3ds Max works, so I'm just going to go over the steps I used to make it.
Create a circular spline like so and convert it to an editable spline. Keep note of your radius as you will need that for the next step (Fig.01).
Make sure your selection is set to Vertex, select the two middle vertexes and click on Break. Then change your selection from vertex to spline, select the bottom half of your circle and drag it to the right. If you know the radius of the circle then you can just move it over by that much. Once you are done you should have something that looks like this (Fig.02).
Make sure you weld the two central vertexes together. Now what we are going to do is select the spline (it should select the whole profile) and shift drag it to the right to make a copy. Weld the vertexes and repeat. You should end up with something like this (Fig.03).
Once you have done this use the clone and instance commands to make something like this (Fig.04). Move some of the splines so that later they will cross over. Also attach them all together so that they are one selectable spline (Fig.04).