Picture of 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
hingiverse link : http://www.thingiverse.com/thing:17992

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Step 1: STL Model

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You will first need to download this .STL file, and send it to print.


Step 2: Find a 3D printer

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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

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I used White ABS with normal definition. I suppose that PLA would also work fine. 

Step 4: Clean

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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

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Once you have the core, get 14 eraser tips. They come in many colors, so you have the choice! 

Step 6: Shine

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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

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Insert the erasers!

Step 8: Touch up

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If you DID abuse on acetone, you will need to put a little bit of glue for the assembly.

Step 9: Erase

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SURPRISE! The eraser-ball erases!

Step 10: Play

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It also easily becomes a distracting office game. 
Have fun!

randofo made it!1 year ago

Made a few to show off some of the cool stuff posted to Instructables.

vincent75203 years ago
I see you didn't have a comment on this one.

I'm glad to be the first : I like it a lot !!!!…