You need to create a border file first to give the round section height and width.

You need to create a job (model) in Part Wizard or ArtCAM which has the dimensions of the section you are going to turn. We want a blank with a 5 inch diameter.

Width is easy that is the width or length you want for the section.

Height is actually going to be the circumference of the blank. Circumference = diameter * 3.141818. So for our example Circumference = 5 * 3.141818. Circumference = 15.7409. Rounding that down a bit gives us 15.7. By the way, my program is not for the super precise. I consider it an artistic program. If you are looking for super precise this is not for you.

Thickness will be 5 inches - the diameter of the blank.

Next, create a rectangle the exact size of the job (model). In our example it would be 24 wide by 15.7 high.

Create and center the vector using F9.

Go to the toolpath tab and select machine along vectors.

Start and finish depth are 0.

Select a half inch ballnose as the profiling tool.

Calculate the toolpath and close.

Save the toolpath as Shopbot(inch)(*.sbp) format.

Now we will create a simple flute pattern to overlay onto our round blank.

Go into the Part Wizard or ArtCAM job or model we created and create a line vector 22 inches long at 1 inch in the Y and on the X axis.

We are going to create 8 flutes so divide the height 15.7 by 8. This gives us a Y gap of approximately 1.96. Using the block copy tool create the 8 flutes see the block and rotate copy screen below.

For better toolpathing you may want to alternate the green start points on the flute vectors so the router will go down and come back without having to return first. Just position your cursor at the opposite end of the vector and hit the P key to put the start point on that end. Do this for all the alternates. See the output on the toopath next screen.

Here is the toolpath:

Save the toolpath as a Shopbot(inch)(*.sbp) toolpath format.

Now we are ready to go to the indexer converter program:

Click on and select the type of rounding you need.

If you have not already done so you will need to enter the setup values.

Select 1 section for our example program.

Select indexer type round for this section.

Select 1 copy to go around the blank.

Now click on the select files button.

Select the border file we created earlier.

For our example we want to overlay the section with the flutes file we created earlier.

You could also add a 2 dimensional v-carving or 3 dimensional carving .sbp file as input as long as they are created using the Shopbot(inch)(*.sbp) format and have the same job or model dimensions.

Enter yes on the overlay screen.

Enter round for the indexer type for section 2. Enter 1 for the copies. Then hit select files.

Select the flutes file we created earlier.

Enter no on the overlay for our example. Note: extra overlays are used for such things as Z level roughing and finishing on 3D objects.

Save your file.

Notice the final dimensions on the last screen.

Click done to exit.