Electric Eraser

Introduction: Electric Eraser

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




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    22 Discussions

    i use my architechtural erasing shield. haha, just thought u guys might want to know that

    LOL...few days ago i do something like this...it was very funny!

    This is a great idea. You could use what ever eraser you wanted. An electric eraser is quite expensive, as much as $100 for one of good quality. Designers use them extensively. There are also eraser guards, cheap but handy. You will find them at Staples or whatever. Any drafting kit comes with a broom, 45*, 60*, and 90*, angles, three sided ruler, and eraser guards with various shapes.

    I't would be nice to know wht this can erase. I recall 'ink erasers' which had grit in them, in order to remove paper (and the ink absorbed onto it). About as messy as Monkee-Mike's-Mum's-Tippex, but still a bit crappy. Will this drill holes through paper?

    1 reply

    It probably won't, but if the fan takes more than 2 AA's, it's more powerful than what I've tested. There may be other circumstances, though.

    maybe if I got one of those pen style eraser things and made the hole it comes out of bigger... And I don't have a camera yet, so :Þ to me.

    this would work really well if used with eraser templates, which are thin sheets of metal with different shapes pierced out. It would eliminate the chances of rubbing out sutff close by if accuracy is Really important to you.

    Most of those fan's motors are so weak that I don't think they would work... I am surprised they did!

    Idea seems good - I agree with Peter- B-, pictures of course would help (if you can somehow find a camera :P). That said, I have a rather nice electric eraser, if you make one that works with standard eraser refills (say the long type about 1cm thick) - that would earn an A+ ;)

    Rotteneggs probably has more pyrotechnic stuff, I know a LOT about that

    Okay... I can tell your new to instructables. I joined it because of the cool pyrotechnic ideas on the site. Okay idea, B-

    Man this si awsome, it will save me some $ and hel me get some serious smudges out of my drawings without taking a chunk off.