I think what our collector friend was getting at was the large, globby and poorly done solder jobs that fill in gaps, or partially fill them in, versus a very nice tight well done solder joint that is a nice hairline if visible at all. A maker who fills in gaps with solder or uses it to hold the guard on is indeed cutting corners and stopping short of a better job and it has given soldering an undeserved bad name. The tighter the fit the better the solder works via capillary action and too few makers precision fit as well as solder. I believe solder should seal out the elements not hold the guard on. Due to the nature of the knives I am doing these days I am not using as much solder but if I had to do a using hunter, I wouldn't hesitate to solder the guard although you would be hard pressed to tell there was solder present. I have had very anti-solder people compliment me on not using solder on a knife they were looking at, and politeness cause me to just keep my mouth shut and drawn into a smile as they looked at a guard to blade fit that was discretely sealed with that horrible method. This has even happened with my damascus blades, actually more so since I hid it even better on damascus so as not to add the nasty silver line in all that pretty pattern.