what is the best "field knife sharpener" to use when dressing / cutting up game? i have a small one with carbide inserts, but the angle isn't right for high quality knives and can even damage the blade. generally a 20 degree ( or something similar ) works best for me.
online smith and also lansky offer a portable model, but they appear to share the same carbide inserts but with an unknown angle.
thanks in advance for your help.