Originally Posted by
Keithmj
Where did you get the ball bearings? I have the allen wrench 5mm size and was wondering what size bearing to use so I don't have to try everything. I like this idea and I am aware that this is an older post..Thanks..Cheers

I have found recently that solder works just as well, looks nicer and is easier to remove (with solder wicking) if you want to switch out/adjust parts.
Soldering irons cost about $10 at a hardware store. Solder and solder wicking is a few bucks.
With a steady hand, simply heat some solder and drip in into the allen bolt heads, let cool.
To remove, heat the solder and soak it up with the wicking.
Word.
~D