Okay, This is pretty simple... I’m gonna tell you how to turn a mini fan (or some other spinning toy) into an eraser that will erase for you with precision.
There are many instances where you may need to erase things in a small area, and it may be difficult to do so when you are going back and forth with a standard eraser.
For example, you may want to erase a certain section.
You will usually end up with something like the bottom picture.
So, with this precision tool, you will be able to erase with precision, like the other picture.
Onto the directions!
Step 1: Get a Mini Fan Like This One
Step 2: Take Off the Blades of the Fan.
Take off the blades of the fan. This may take some effort, but I’ve found that they are generally not glued on, but just jammed into the top of the motor. Use some pliers and/or a vise.
Step 3: Take the Eraser Off of the End of a Pencil.
Take the eraser off of the end of a pencil. This also takes some effort, and I generally prefer cutting a regular (\:::\ shape) eraser to size and rounding it off.
Step 4: Jab the End of the Fan Into the Eraser
Jab the end of the fan (should look something like the round end of a pin) into the eraser, and take it out. Repeat until the eraser bottom is almost touching the fan. Turn on the fan and check if the eraser wobbles at all, slightly or majorly. If majorly, conduct step 5. If slightly, grind it against something rough (sandpaper, concrete) until there is almost no wobble.
Step 5: OPTIONAL! Put Superglue Over the End of the Fan
(optional) Put superglue over the end of the fan, and put the eraser head back on. IMPORTANT! Turn the fan upside down, then turn it on and leave it on for double the glue’s estimated drying time. This is so that the excess glue doesn’t jam the motor.
Step 6: Try It With an 18 Volt Cordless Drill