Is the projection correctly drawn?

[DrTacoElf]

Advertisement - Members don't see this ad

Shouldn't the top be flat and not curved?

 

[JavadiCavity]

Shouldn't the top be flat and not curved?

I think it's right. Since the top of the "chimney" is at an angle, you would actually be able to see its curvature.

 

[panama]

Yeah, it'd be curved, its a cylinder cut at an angle.