I did this by selecting the centerline on the left side of my bounding box to be the revolving axis and revolving it 360 degrees to create the piece. Once finished the taper and sketch, revolved it. Once I was happy with how the sketch looked, I added a relief taper on the base to reduce the cutter load in the machining stage, this is because there was a large difference in the diameter of the base of my piece in comparison to the diameter of the stock. Although I didn't do this, one option would be to add an image of your paper sketch and follow it with the spline tool.

this is important because we will be revolving about the central axis of the sketch to create a solid. this gives you an area to limit your sketch to.Īfter this, it was time to used the line tool and fit point spline tool to produce half the profile of the chess piece.

As I'm going to use a revolved profile to produce the solid, ill make my bounding box 36x12.5mm. based on the rough ratio from my sketch, I decided to make my piece 36mm tall. In my case, I have a 90mm Bar of 25mm diameter steel. The next step was to draw the bounding box for the limit of the size, this is important and it will help ensure you can actually fit the solid inside the stock you have. If you're following along planning to make this, I haven't included my sketches as this is less of a technical part and is more about how you want your pieces to look. My final decision was to start off with the pawn as this was the sketch I was most pleased with. The real first step was some rough sketches on paper, to get an idea of how I wanted these pieces to look.

I chose this because this is what I was taught to use, and it just happens to be perfect for this project, thanks to the integrated CAM support within the program. I started this project off in Fusion360, my chosen CAD package.

Fusion 360 for cnc