I am a jeweler by trade, but enjoy collecting knives and guns. A couple of years ago I decided to try using one of the tools (a laser welder) in my shop to do something a bit unconventional: replacing a 1/4" chunk of the main blade missing from the point of a rusty, long-neglected WW2 Camillus Navy Utility knife. I had once considered using a regular welder to attempt this but found that pocket knife blade metal was too small and thin for a conventional welding machine (or maybe simply exceeded my welding prowess) plus I was warned (by somebody smarter than me) that excessive heat generated by the welder would radically change the temper of a knife blade. But I figured the laser welder may change all this because A) it was designed for smaller work and B) it localized heat to a tiny (sub 1mm) area directly at the weld; in fact you can hold the blade in your hand while working on it! Before attempting this on my rusted-shut-basket-case Camillus, I decided to first attempt to fix another slightly less collectible knife, a Schrade Old Timer with about 1/8" broken off a secondary blade. After some trial and error this knife came out well so I moved on to the Camillus. I replaced the missing 1/4" piece with success and now carry this knife daily. Even I cannot tell you exactly where the blade was broken! Replacing the missing piece was far preferable to me than grinding the blade down to the point of the break. Can't say the knife looks new or anything, but it looks darn good and 1000% better than the rusted hunk of metal destined for the trash it was when I got it. Also, it allowed me to retain the original tang stamp- not a huge deal on a mass-produced military utility knife but would be consideration for a more collectible piece. Since then I've done a couple more blade tips for local customers and am interested in offering the service to a wider audience. If anybody has a knife with this issue, before grinding it down to the point of the broken tip, please contact me first. Include photos if possible.