Posted by RedRogueXIII

Kind of a long explanation but :
It needs a bit of math, you've gotta pick a cylinder with a number of sides that will divide easily between the grooves. Say you want a cylinder with 5 grooves in it then you've gotta pick a cylinder with a power of 5*2(multiplying by two in order to have the sides used for the grooves as well as the normals faces. Then once you've got it set up, I isolate the sides i will use to cut the groove. Using copy and paste and some scaling and cutting I get the shape cut into the sides. Then I manually pull the verts down to arrange the smoothness. Set the groove and cylinder into different smooth groups then cut paste and rotate to make the full set of grooves and stitch and optimize the thing. Bad explanation but Im kinda tired, if I get to writing a tutorial I'll make sure to go over this better.