Eraser ball (3DP) by Samuel Bernier
I love the shape of these vintage erasers. When I saw a whole bag of them for only 99 cents at Office Depot, I had this idea for a little office toy. 3D printing fanatics, here is my gift to you.

123D link : http://www.123dapp.com/AssetManager/Publisher?stgAction=getProduct&intProductId=597788
Thingiverse link : http://www.thingiverse.com/thing:17992








Step 1: STL Model

Eraser ball (3DP) by Samuel Bernier
You will first need to download this .STL file, and send it to print. eraser_ball.stl
Eraser ball (3DP) by Samuel Bernier
eraser_ball.stl1 MB

Step 2: Find a 3D printer

Eraser ball (3DP) by Samuel Bernier
I used an UP! 3D printer and it worked very well. It took me a while to optimise it, but I'll post that in an other Instructable.

Step 3: 3D Print

Eraser ball (3DP) by Samuel Bernier
I used White ABS with normal definition. I suppose that PLA would also work fine.

Step 4: Clean

Eraser ball (3DP) by Samuel Bernier
If you used a RepRap 3D printer, you will need to remove the support plastic with tweezers or needle-noze pliers.You might also want to use sandpaper to remove the rough texture.

Step 5: What you need

Eraser ball (3DP) by Samuel Bernier
Once you have the core, get 14 eraser tips. They come in many colors, so you have the choice!

Step 6: Shine

Eraser ball (3DP) by Samuel Bernier
If you want to be fancy and have a shiny surface, you can use a little bit of acetone. Be careful because it actually melts the plastic so use a brush (real hair because synthetic ones will also melt). If you put to much acetone on the little harms, they will shrink and the tolerances will change.

Step 7: Insert

Eraser ball (3DP) by Samuel Bernier
Insert the erasers!

Step 8: Touch up

Eraser ball (3DP) by Samuel Bernier
If you DID abuse on acetone, you will need to put a little bit of glue for the assembly.

Step 9: Erase

Eraser ball (3DP) by Samuel Bernier
SURPRISE! The eraser-ball erases!

Step 10: Play

Eraser ball (3DP) by Samuel Bernier
It also easily becomes a distracting office game.
Have fun!

-Sam
 
 

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