Originally Posted by Ya Tu Sabes

So I had a quill stem and cruiser bars that I wanted to use together on my fixie, 'cause they give me just the right hand position, but the bar diameter is a tiny bit too small for the clamp, so if a apply a lot of pressure to the ends of the bar, I can get it to move a little bit (even with a shim). Being cheap, I decided to fashion a home remedy: After tightening the clamp as tight as could be (with the shim), I drilled a small hole all the way through the clamp and bar and threaded a bolt in so it emerged on the underside, thus ensuring that the bar will not move. The bolt fits the hole snugly so there is no play, and the bar feels solid (I rode it to work today without incident). Is there some principle of physics, metallurgy, or common sense I'm ignoring that will lead to my eventual (literal) downfall?