I had a German sidelock double with the guard broken across the rear screw hole. Although heavily engraved, there was a narrow gap in engraving at the break. I was able to carefully clamp and TIG weld it, dress the weld, and clean up the countersink without touching the engraving. Then after welding and filing the backside, I was pleased to see the heat discoloration on the previously welded front blended nicely with the original case colors. Used a 1/16" tungsten and thin filler rod. Did I mention I put off doing this job for over a year as I was nervous about damaging the engraving? This would be a simple job for a decent TIG welder on a plain guard.
