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In this tutorial you will learn a quick, easy and accurate way of creating your own basic biohazard icon. For this tutorial we'll be focusing mainly on the use of the Ellipse and Rotate Tools. Let's begin!
Make a new document of 600px by 600px and make sure you have Smart Guides turned on by going to View > Smart Guides.
Selecting the Rectangle Tool (M) change your current fill color from white to black (Shift + X) and set stroke to none (Backslash). Then finding the center of the artboard Alt + Click to bring up the Option Panel and give both Width and Height a value of 600px. Finally Lock Selection into place (Command + 2).
Open the Gradient Panel (Window > Gradient Panel) and set the gradient Type to radial. Give the left slider a fill of 255, 245, 0 and then Alt + Drag a new copy to Location 75% and change it's color to 255, 209, 0. Repeat this once more using 255, 161, 0 for the fill and Location 85% then finally for the last slider 227, 84, 0.
Now select the Ellipse Tool (L), Alt + Click in the center of the document this time entering 400px for the Width and Height in the Option Panel.
Copy (Command + C) this circle and Paste In Front (Command + F). With the top copy still selected go to Object > Transform > Transform Each and for Scale give both Horizontal and Vertical a value of 95% while moving it Vertical -8px and hit Copy.
Shift + Click the circle directly beneath the one you just created and in the Pathfinder Panel (Window > Pathfinder) click Minus Front. Now in the Transparency Panel (Window > Transparency) set Blend Mode to Multiply.
Select the original circle you created and give it an Outer Glow (Effect > Stylize > Outer Glow). Use RGB 255, 0, 0 with Mode set to Screen, Opacity at 100% and a Blur of 22px.
Deselect everything (Command + Shift + A) and change your fill to a dark gray (51, 51, 51) with no stroke. Now using the same technique as before Alt + Click in the center of your artboard putting 200px for Width and Height in the Option Panel.
Keeping the new circle selected go to Object > Transform > Transform each and give it a Scale of 75% for each and moving it Vertically -26px, now hit Copy. Change the fill of this to white. Next Command + Shift + Click on the gray circle to select both, then move -81px Vertical (Command + Shift + M).
Switch to Outline view (Command + Y) and find the center of the artboard once more. With the Ellipse Tool (L) still selected Alt + Click to create an ellipse 40px x 40px. Change the fill color to something bright with it still selected go to Path > Offset Path and enter a value of 55px. Press Shift + X on the keyboard to change the fill to a stroke and set the weight of this stroke to 30px.
Using the Line Segment Tool (Backslash) draw a line with weight of 10px from the center of artboard up towards the circle with a 30px stroke but make sure they don't actually touch. Hold Command + Shift + Click to then select the dark gray and white ellipses along with your new 10px stroke.
Pick the Rotate Tool (R) from the toolbar and Alt + Click in the center of the artboard and when presented with the Option Panel give an Angle of 120 degrees. Hit Copy followed by Command + D to make a third copy.
Grab the Selection Tool (V) and hold Shift + Click on each of the three white circles. In the Pathfinder Panel choose to Unite. Now select the dark gray circles behind them and do the same. Once more holding Shift + Click select both newly united shapes go back once more to the Pathfinder and Minus Front. Keep this new shape selected proceed to Object > Path > Offset Path and give a value of 5px. Shift + Click on the ellipse beneath it with a 30px stroke and then Object > Path > Outline Stroke. Go back to the Pathfinder Panel with both still selected hit Minus Front.
Keep this new shape selected proceed to Object > Path > Offset Path and give a value of 5px. Shift + Click on the ellipse beneath it with a 30px stroke and then Object > Path > Outline Stroke. Go back to the Pathfinder Panel with both still selected hit Minus Front.
Return to Outline view (Command + Y) and select the three line segments with smallest circle of 40px. Next, Object > Path > Outline Stroke followed by Object > Arrange > Bring To Front. Now in the Pathfinder Panel Unite them. Exit Outline view (Command + Y), Shift + Click to also select the dark gray biohazard shape beneath and pick Minus Front from the Pathfinder. Lastly select this new shape along with brightly colored section left over and Unite.
Using the Ellipse Tool (L) Alt + click on the center of the document and create a new shape 295px wide by 220px high. Set the fill to white and in the Transparency Panel, Blend Mode to Soft Light. Using the Up Arrow Key on the keyboard now simply nudge it into place.
Using the Selection Tool (V) select all the shapes you have created and group them together (Command + G). Copy (Command + C) and Paste In Front (Command + F) then holding shift grab a corner and rotate 180 degrees so the image is now upside down. Drag this beneath the original icon.
Select the Rectangle Tool (M) and give it a default black and white linear gradient with Angle -90. Draw a rectangle to fit over the part of the icon that will become the reflection and then holding Command + Shift select bottom icon. Last thing you need to do is go to the Transparency Panel, select Opacity Mask and you're done!
Using this technique, you can create an entire collection of icons. I hope you enjoyed this tut.