best practice to create a half sphere that has polygon shape cut into it in an organized pattern.

[ahoffman1989]

I'm attempting to make a mesh screen half sphere. my current process is creating half sphere -> create tangent plane -> draw polygon pattern on plane -> extrude cutting into sphere. this worked but the bottom portion doesn't retain its pattern and shape due to the vertical nature.

I have attempted to use Geometric pattern function and that also distorted the pattern.

photo attached is the extruded tangent plane method.

[akash.nawghare]

Hi @ahoffman1989 

The issue is that extruding from a tangent plane cuts in a fixed direction, not normal to the sphere. Near the base, holes get stretched and the pattern breaks down.

Recommended workflow:

1. Create the hemisphere at the origin with Revolve (semi-circle profile, 180°) rather than Sphere + Split — easier to pattern from the center.

2. Shell if you need a hollow screen.

3. Cut one “master” hole radially:

   • Pick a point on the outer surface.
   • Construct → Axis Through Two Points (origin → that point).
   • Construct → Plane at Point normal to that axis.
   • Sketch your polygon on that plane.
   • Extrude → Cut along the axis Through All (or To the inner face if shelled).

4. Pattern the cut, not the sketch:

   • Create → Pattern → Circular Pattern on the cut feature about the vertical (Z) axis.
   • Add more rings at different heights; adjust count per ring so spacing stays roughly even.

5. For many holes, sketch center points on the surface (or use radial Pipe → Cut from the origin) and pattern those — same idea used on geodesic/colander models.

Geometric Pattern follows one face’s UV and will distort near the rim and apex; radial cuts + circular patterns give a much more uniform mesh.

Did you find this post helpful? Feel free to Like this post.

Did your question get successfully answered? Then click on the ACCEPT SOLUTION button.

 

Thanks
Akash Nawghare
Autodesk Fusion

[g-andresen · Accepted solution]

Hi,

try this

The comment is only in German!

günther

[ahoffman1989]

YES!! this worked perfect!!

[johnsonshiue]

Hi! You may want to look into Geometric Pattern.

Many thanks!

[dargas22]

Geometric pattern is unfortunately only available on paid version of Fusion. ☹️