I’ve tried few Illustrator tutorials on the web related to how create a disco ball, but i’ve never really liked the final image, so I’ve tried to find the right way for drawing a more realistic disco ball… If you are interested, please see below the instructions
Create a New Document and then create a rectangular shape (I choosed ~ 175*175px). Fill it with bright radial gradient. Rasterize your image (In the top menu go to Object-Rasterize and just clik “ok” not changing anything there). Then enlarge your square a bit (~150%)
Now go to the Filter-Create-Object Mosaic and play with numbers there. I choosed:
Tile spacing = 1px for both width and height
Number of Tiles =30 (again for both)
Check ‘Delete Raster’ box.
Now we’ve got a nicemosaic. Reduce the size of the image back to the 175*175px.
Select the rectangular and drag and drop it into the Symbols panel.
Now create a circle (mine is ~175*175px as well), make a copy of it and put aside. Now go back to the original circle and delete its left anchor point with Direct Selection Tool (white arrow). We will need the full circle later so do not accidentaly delete it.
After that go to Effect-3D – Revolve. Change numbers there following the picture below, change Surface to “No Shading” and go to the Map Art.
In the Map Art window in the drop down menu choose the mosaic symbol we created before. Increase or decrease its size if necessary.
Now go to the Object – Expand Appearance.
So now we have to delete all rubbish from the picture. Select the sphere and press Ctrl-Shift-G three times (ungroup everything). Then click on the sphere again and move it. Select all the rubbish (shapes you won’t need) and delete it.
Select a circle we’ve made in the begging (the one we left aside before creating the 3d effect), fill it with the same radial gradient, put it underneath the mosaic (Ctrl+shift+[ ) and align them horizontally and vertically using the align panel (Shift+F7).
Release Cliping Mask and Ungroup tiles (Ctrl+Shift+G).
So now it’s time to use your imagination to make our disco ball looks more shiny and real.
At first, lets highlight some tiles: randomly select some tiles in the lightest area of the ball; go to Live Color (Edit-Edit Colors-Recolor Artwork). Click on Edit (1), then Link Harmony Colors (2), then increase Brightness to maximum (100%) and decrease Saturation to about 30-40% or more/less (depends on your colors).
Now select other tiles, go to Edit colors again and play with the colors there (make them darker or lighter… It’s better to change Brightness and Saturation only. Unless you want your disco ball looks more colorfull). Keep doing “select-edit colors” until you are satisfied with result.
Now lets add some sparkles to the highlighted areas. Draw a 4 points star with the Star Tool (see numbers for use below). Scale it (~50%), copy and paste in front (Ctrl+F), rotate 90’ and scale (50%) again. Now we have a nice sparkle. Place sparkles to the highlighted area of your disco ball.
Add a holder (just a simple rectangular with a gradient fill). That’s it – we’ve got a disco ball!