Shape it as shown and then extrude the two polys upwards as shown.
Extrude the poly shown in the direction of the red arrows.
Select the polys and inset them as shown. Extrude them outwards by about 1 or so.
3DTotal
Advertisement - We need your support!
As
well as you tutorial hungry people eating through a terabit of bandwidth each
month we also have many additional staff and running costs involved in creating
these free pages. We want to continue bringing you many free tutorials and resources
everyday, so PLEASE check out our products and amazon affiliate schemes via the
above banners. Many thanks!
Do another inset and then arrange the vertices to form a circle. (Tip: create a 12-sided n-gon and place it in front of the geometry as a guide for where to place vertcies to make a perfect circle.)