Rex,
On sharpening your light saber, well, the quy at the knife shop at the mall told me that it was a proprietary process but he let me in on a little secret (after bribing him with one of those giant pretzels)! He said that it is sharpened at a wavelength of 923 nanometers, + or - 5 with a photon beam, anything closer to the infrared spectrum and the light would tend to bend and be somewhat dim. He explained that if you do go outside this range, it would be no better than a darkness obsorber! Go figure, I thought it would be inversely proportional but that is what he said, and he should know, he is the assistant manager there!
I like this forum, it is always a great source of information! Everyone openly shares their knowledge.
C Wilkins