This is something I came up with because I couldn't find any washers that were small enough in the hardware store and I didn't want to order them from the internet, I decided to improvice and it worked out great(I think)
All you nead is a power drill, an adjustable vice and some suitable nails.
Set the drill to the lowest speed, drill in short intervals and don't push to hard, it's alot easier to get the holes centered that way and your drill won't break(i broke two drill heads before i figured out the technique)

Here's the result.
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