[bharada]

To polish the edges you might want to use a wed/dry sandpaper on a rubber sanding block. First, wet the sandpaper and glass, then after you're done sanding you can wipe up the residual water/particles with a paper towel. Just keep eveything wet by dipping the sandpaper into a bucket of water often.

One other thing you can use (if you have one) is a wet stone for sharpening knives. Same principle as the sandpaper, without needing a sanding block.