When you will click on Revolve, a 3D Revolve Option box will appear. Put a checkmark on Preview and manually revolve the 3D square to set your doughnut shape. Now set the offset value to 55pt.
After making the required changes click OK.
Now select the Pencil Tool and draw the upper layer of the donut. Now, this is the time to show your creativity. Draw the melting chocolaty layer and fill it with dark brown color.
Now select the melted chocolate shape drawn and click on Effect in the Menu Bar. Place the cursor on Stylize and select Inner Glow.
Now apply Inner Glow Effect at the edges of the selected shape.
Now select the melted chocolate shape and press Ctrl + Cto copy the shape and then press Ctrl + B to paste the copied shape at the back. Then drag the copied shape a bit downwards.
Now select the copied shape and change its Blend Mode to Overlay in Transparency Panel.
Now select the Pen Tool and draw an arc shape at the left edge of the donut drawing.
Fill the arc shape with color #8b5e3c.
Now select the arc shape drawn in the above step and apply Gaussian Blur to it.
Effect > Blur > Gaussian Blur
In a similar way, draw another arc shape at the right edge of the donut drawing.
Now select the Pencil Tool from the Tool Panel and draw a shape as shown in the below image.
Fill the shape with a brown color gradient.
Let the shape be selected and apply a Feather effect to it.
Effect > Stylize > Feather
Now we will draw some stroke lines with the help of the Pencil Tool to create an effect of melting chocolate on the donut icon.
After drawing the strokes, fill them with a gradient to create a realistic effect.
Now we will sprinkle some toppings on the 3D donut.
Select the Pen Tooland draw an arc shape stroke on the chocolate.
Now open the Brushes Panel and select Dot Rings Decorative Scatter Brush.
Your chocolaty donut is ready.
So this is how you can draw a donut in illustrator with the help of 3D Effect. Hope you will find this method easy to use.
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