How to combine intesecting circular pattern into 1 solid

I made a similar model to see how to do it and I could not get it to make three separate bodies. Could you provide your file to look at? I made a video of the part I made. you can find it here;
http://youtu.be/eFT9t3w26aY

Answered with a tutorial: https://grabcad.com/tutorials/how-to-combine-intesecting-circular-pattern-into-1-solid

I think it was a Solidworks bug, it worked when i put number of instances to 2, it also worked if the cross section isn't a circle but a hexagon for example

Thank you for your help