# Tip: Cutting a Hole in a Curved Surface – Revisit

In this quick Blender 2.5 video tip we revisit a tip we did a while back in Blender 2.49 on how to cut a hole in a curved surface. This tip makes use of the Shrinkwrap modifier and also provides some topology practice.

Original tip can be found here: http://www.blendercookie.com/2009/09/09/tip-cutting-a-hole-in-a-curved-surface/

### Discussion

41 Responses to “Tip: Cutting a Hole in a Curved Surface – Revisit”
1. Posts: 1
Michael says:

Cool, thanks a lot! I have to model a bowling ball and was having topology issues with boolean operations. I think this is exactly what I needed to watch.

Dec 29, 2010 at 7:11 pm
2. Posts: 35
Lucas Fowler says:

Whats with the topology? I really never understood what that meant! But awesome tut! Happy GameEngineing!

Dec 29, 2010 at 10:51 pm
• Posts: 18

Jonathan should have shown what happens with Boolean Modifier to make it clear. Try it Taco and you’ll understand the moment you click on Apply in the Boolean modifier tab. I guess that’s one of the best example of good vs dirty topology and their consequences.

Dec 30, 2010 at 6:53 am
3. Posts: 10
Koczek says:

Hi,

This is a great tip from Jonathan. Thanks for that! Also, there are several good tips written by others.
I think it would be better to shrink a ring of faces instead a single circle to help you with future subsurfs.
That’s my 2 cents :).

Happy Hols!

Dec 30, 2010 at 3:10 am
4. Posts: 45
FreeMind says:

There is an easyer way:
Create the cube
Subsurf modifier, apply
“To sphere” the whole cube
Delete a quad hole in it (select four faces for example)
Select the whole
To sphere, makes it round.
select the whole cube again, to sphere.
Done.
Works on the whole cube without no topology problems.

Jan 3, 2011 at 4:53 am
• Posts: 45
FreeMind says:

*hole
*easier
damn typos.

Jan 3, 2011 at 4:56 am
• Posts: 18

OK for a sphere but not for more complex curved shapes.

Jonathan gave a method that works with every kind of shape.

Jan 3, 2011 at 5:05 am
• Posts: 25
Ron Hatfield says:

That seemed to work for me, using the fit inside method and took less time.
Staff, can you comment on this?

Is it the same thing? When would I use the demo’d technique vs. this one?

Dec 12, 2014 at 10:50 am
• Posts: 4136

The LoopTools technique is even better in many cases. Mostly because that’s explicitly what it was designed for and provides more options.

The main benefit to using To Sphere, is that it doesn’t require an add-on.

Dec 12, 2014 at 1:42 pm
5. Posts: 1

Sep 9, 2011 at 9:31 pm
• Posts: 564
Wes Burke says:

Thank you for letting us know.. link updated.

Oct 5, 2011 at 10:11 am
6. Posts: 39

Nice Tutorial Thanks!

Dec 16, 2011 at 9:11 pm
7. Posts: 4
Phillip Hoyt says:

Nice tut but I was more interested in the material you used

Sep 7, 2012 at 7:50 pm
8. Posts: 3
Mike Kirk says:

really nice tutorial jonathan!
do you know how would you go about carving letters in a pumpkin ? would really appreciate the feedback/tutorial on that?

Aug 17, 2014 at 9:23 am
• Posts: 4136

Letters would probably best be done with boolean modifiers. Doing it any other way would become very complicated quite quickly. Additionally using modifiers will allow you to change the text at any point.

Aug 24, 2014 at 5:11 pm
9. Posts: 4
Ed Baker says:

So fantastic and so simple. I always tend to make it by brute force moving vertex by vertex. So much better.

Thanks Jonathan.

Mar 4, 2015 at 3:43 am