Next I drew a couple of upright lines on the first sketch to determine the width of the base of the fluted section. Which was 8mm on my overscale drawing. Then I created another offset plane this time at the top of the column/base of the fluted section.

Then I created a sketch on that plane and drew a circle 8mm in diameter on the edge of that circle I drew another circle 0.6mm in diameter using these as a best guess for the size of the flute. I then used the circular pattern tool to create circle all around the inner circle. this ended up being 42.

Then on the first sketch I drew the profile of the flute.

 I extruded this again symmetrically 0.3mm either way, to give me the 0.6mm thickness that I had determined (best guess!!!) was the flute size. Then I filleted the front edges to give me the round flute

Lastly I used the circular pattern tool again to create the circle of 42.

I even managed to get the render tool to work this morning last night I think that my machine was doing an update in the background and it was running like a dog.