Its just the order you need to do the boolean, select the box first then the cylinder, for game a bit of bevelling, normal maps(if permitted) and texturing to keep the poly count down......dave Alright, Sorry for asking so many things haha , I'm just trying to get into this as fast as possible I followed your instructions, but after messing with the main square, I got this issue: The Cylinder is under this face, and I just can't remove that face without leaving a big squared hole.. I tried using the "Fill hole" but it just filled the square again without caring about the cylinder in the middle