How to Make a Soft Tip Stylus for the iTouch

Test your kitchen sponge by brushing it across the iPod touch's screen to make sure it can be detected by the device. Organic sponges typically perform the best, but you may need to experiment with different types and brands to find one that the iPod touch can detect.
Cut a rectangular piece of sponge approximately 1 inch by 2 inches. The depth is determined by the depth of the kitchen sponge, but is ideally around 1 inch.
Squash the sponge and roll it into a tight cylindrical shape 1 inch long.
Wrap the thin copper wire around half of the sponge to help it keep its cylindrical shape. Leave at least 6 inches of copper wire free.
Twist or unscrew the artist's charcoal holder to open it wide enough to slide the copper-bound side of the sponge cylinder into it. Tighten the holder to grip the sponge, leaving approximately one-quarter of an inch of sponge protruding from the holder. The free piece of wire should also protrude from the end of the holder.
Wind the remaining length of wire around the holder. Keep the wire tight, though the spiral can be quite wide. Secure the wire at the opposite end of the holder to the sponge using a piece of sticky tape. The stylus is now ready for use on your iPod touch.
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How to Fix a MacBook Spacebar (9 Steps)

Take the 'C', 'M' and 'Command' keys off the keyboard. Place your fingernail under the key and carefully lift it up until it unclips itself. Removing these keys will give you more space to remove the space bar and clean.
Press the lower half of the space bar firmly. The upper half will be higher than the other keys on the keyboard.
Press the upper side of the space bar firmly. The lower half will then be higher than the other keys. The change in height will cause the metal bars to unhook themselves from the space bar, and coincidentally unclip the two metal tabs. You may need to do this more than once to get each piece unclipped; you will hear a distinctive click.
Press the left side of the space bar until you hear a click. This means the left white clip is undone.
Press the right side of the space bar until you hear a click. Then press the center of the space bar until you hear a click. At this point, all the clips and hooks will be undone.
Pull the space bar away from the keyboard carefully.
Use a cotton swab or cleaning wipe to clean the now-exposed area of the keyboard. Wipe the space bar key clean as well, since sticky substances and crumbs can get stuck to it.
Place the space bar back on the keyboard in the correct location and click it in place.
Replace the 'C', 'M' and 'Command' keys.
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How to Add Macbook Memory

Shut down and unplug your MacBook.
Open the computer case by loosening and removing the eight small screws around the edge of the computer back.
Discharge any static electricity in your body by touching a piece of metal. Static charges can damage sensitive components inside your MacBook.
Locate the memory card(s) toward the right side of the back of the computer.
Remove memory card by pressing the levers on either side of the memory card(s).
Install new memory card by inserting it at an angle into the memory slot the same way you removed the old card. Apply steady, even pressure and do not force the device into place. Repeat the same process for the second memory slot.
Close the computer case by snapping the bottom plate into the same position it was when you removed it. Replace the screws and tighten them firmly.
Plug in and start up your MacBook. It is ready to use with its new memory.
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How to Replace the Hard Drive on an Aluminum Macbook Pro

Shut down the MacBook Pro and disconnect all cables and devices. Allow the computer to cool for 10 minutes before moving to the next step.
Remove the 10 screws that secure the bottom case. The short screws must be removed at an angle. To view the angles, review Page 38 of the MacBook Pro manual (see Resources). Tape each screw to a piece of paper that indicates their original position in the computer case. Lift the case off and put it out of the way.
Touch your finger to a metal surface on the computer’s interior to discharge static electricity that may be present in your body.
Remove the two screws that hold down the bracket that holds the hard drive in place. Tape the bracket and the screws to the second sheet of paper.
Pull up on the tab coming from under the hard drive to lift it from the drive bay. Use a gentle, steady motion.
Disconnect the connector from the drive by pulling the connector as you grip the drive on the left side.
Remove the mounting screws from this disk drive if the replacement drive does not include them. Insert the mounting screws on the replacement hard drive.
Push the hard drive connector into the replacement drive on the left side.
Lower the replacement hard drive into the hard drive bay, copying the angle at which you removed the old hard drive.
Place the bracket over the hard drive and use the screws to secure it.
Position the lower case on the computer and replace the screws, using their alignment on the paper to find the correct location.
Press the Power button and allow the MacBook Pro to start up.
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