Pulling a dent from a powder flask?

[smoothshooter]

If it was mine I'd leave it alone - BUT if it REALLY bothers you, you could try filling it with sand to the level of the dent and then using a wood dowel and a hammer try forcing the sand into the dent pushing it outward. This is a bit extreme as it may also split the solder joints -- good luck with it.

The same could be done with water.

 

[sheriff john]

From experience, flasks are easy to break the seams and darn near impossible to solder back together. Nice ones break easier than junk, but when separated, make interesting ashtrays.