Cutting a circle for extruding into a curved surface

Support Modeling
#1

Hi guys.

I’m currently busy modelling a car and would like to know how I would cut a whole in a curved surface.
Here are images to describe what I want to do:

car_light.PNG664×619 74.8 KB



I want to then extrude the circle in.
here is what it should look like:

I need a solution that works with Subdivision and doesn’t create an uneven surface.

Thanks in advance
Ivan Kahl

#2

you will need to use surface snapping, also known as retopo.

#3

Either surface snapping that Modron mentioned or projecting with shrinkwrap.

Snapping:
[ATTACH=CONFIG]211313[/ATTACH]

  • Circle (10 vertices), aligned
  • Face snapping and option to snap on to another object enabled
  • In edit mode, move (g) all vertices and snap them on the curved object by holding down ctrl and pointing on the object

Shrinkwrap:
[ATTACH=CONFIG]211315[/ATTACH]

  • Apply circle rotation (ctrl+a) so that you get the correct axis in the modifier
  • Add shrinkwrap modifier, enable project option, project axis, positive and negative, and on which object it needs to wrap
  • Apply shrinkwrap modifier

Join the two objects in object mode (ctrl+J) and connect the edges in edit mode. Also, add perimeter loops near the hole edge.
[ATTACH=CONFIG]211316[/ATTACH]