How to cut holes throughout the curved surface of a cylinder?

i tried to create a plane tangent to the curved surface of a cylinder , then i drew a circle and cut extrude that .. but after that i couldn't make a circular pattern of the hole throughout the curved surface of the cylinder

Answer
 
Comments 2

4 Answers

Make a new plane perpendicular on the cylinder.
Make a sketch of half the hole and do a revolved cut

 
Comments 0

Extrude Cut with Through all conditions. If needed add offset too.

 
Comments 0