Double-edged

The term double-edged (aka two edges) appears twice in GURPS Martial Arts:
*MA215 for dagger "Historically, the term described a double-edged knife" though it notes "In GURPS usage, a short, point-only knife"
*MA225 for Sykes-Fairbairn Commando Knife "broad, double-edged blade" treated as a Large Knife
B272's discussion of swing/cut attacks does not elaborate regarding whether a blade is single-edged or double-edged.
Low-Tech also uses the term several times:
*L55 for Broadsword: "Traditionally straight-bladed, double-edged, and pointed; use the Thrusting Broadsword
*LT56 duplicates MA215
*LT62 for Shotel "A heavily curved, double-edged sword" referencing LT65 stats
LT71's description of tooth-edged clubs is probably the most prominent description of a mechanical effect:
:"Double-edged models can be reversed (a free action) to use the other side until it, too, breaks!"
It's prominent since breakage is more common for those weapons (1 in 3 chance on "successful attack" or "successful parry against armed attack")
LT59 does not use the phrase "double-edged" but communicates the same concept in describing the Macuahuitl which is a similar idea except with shards of obsidian stone instead of teeth
:the weapon has two edges – the user can reverse it (a free action) and use the other side until it, too, breaks
LT64 makes a comparison for the Urumi whip:
:"Cutting damage assumes that one or both edges are sharp"
Category:rules