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Robot Racer

Step 7Preparing the wheels

Preparing the wheels
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We need to find the center of our wheels so that we can drill a hole exactly in the middle, if the hole is off-center the car will wiggle about funnily. My bottle-tops had a little lump in the middle so this was easy for me :P.

To find the center of a circular bottle top, have a look at this instructable

Using the same drill-bit as earlier carefully drill a hole in the center of your bottle top.
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I make lots of different instructables, I make stuff i need or want, then show you ! ............................................See my profile for further awesomeness :) ..............................
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