Introduction
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            Buy a hollow screw (4 mm hole) like this one for about 40 cts. Strike it with a hammer. Now you can use it to grab the oval screw and use a regular flat or cross screwdriver to remove the oval screw. 
 
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                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.
9 comments
great idea! :-)
It works! that's awesome
You've got to love the simplicity of hacks like this. Kudos.
I found this screw in my IKEA kit for kitchen , 0 euros and it work. thanks
Thierry Choteau -