Smithing Transform Recipes for Upgrading Diamond Weapons to Electrum
Upgrading diamond weapons to electrum in Jaam's Weaponry uses the smithing transform recipe type, with each weapon requiring a specific diamond base, an electrum upgrade smithing template, and either a double or heavy electrum ingot. The six recipes below cover every diamond weapon that can be transformed into its electrum counterpart.
The Shared Ingredient
Every recipe in this guide uses the 
electrum_upgrade_smithing_template. This template is the common thread across all six transformations, so you will need one for each weapon you upgrade. The second ingredient varies by weapon and comes in two forms: 
Double Electrum Ingot and 
Heavy Electrum Ingot. Which one applies depends entirely on the weapon being upgraded.
Weapons Using Double Electrum Ingot
Four of the six weapons require a Double Electrum Ingot alongside the template and the diamond base.
Diamond Butterfly Sword plus electrum_upgrade_smithing_template plus Double Electrum Ingot produces an 
Electrum Butterfly Sword.
Diamond Saw Cleaver plus electrum_upgrade_smithing_template plus Double Electrum Ingot produces an 
Electrum Saw Cleaver.
Diamond Battle Axe plus electrum_upgrade_smithing_template plus Double Electrum Ingot produces an 
Electrum Battle Axe.
Diamond Broadsword plus electrum_upgrade_smithing_template plus Double Electrum Ingot produces an 
Electrum Broadsword.
Weapons Using Heavy Electrum Ingot
The remaining two weapons swap the double ingot for a Heavy Electrum Ingot.
Diamond Buster Sword plus electrum_upgrade_smithing_template plus Heavy Electrum Ingot produces an 
Electrum Buster Sword.
Diamond Greathammer plus electrum_upgrade_smithing_template plus Heavy Electrum Ingot produces an 
Electrum Greathammer.
Reading the Recipes at a Glance
The pattern is straightforward once you sort the weapons by their ingot requirement. The Diamond Butterfly Sword, Diamond Saw Cleaver, Diamond Battle Axe, and Diamond Broadsword all pair with a Double Electrum Ingot. The Diamond Buster Sword and Diamond Greathammer pair with a Heavy Electrum Ingot. In every case, the template is the same, and the diamond weapon is consumed to become its electrum version.
Practical Notes
Because these are smithing transform recipes, the input diamond weapon is upgraded rather than replaced with an unrelated item. Each transformation keeps the weapon type intact: a diamond butterfly sword becomes an electrum butterfly sword, a diamond greathammer becomes an electrum greathammer, and so on. There are no cross-type conversions among the recipes listed here.
Before starting, confirm which ingot your target weapon needs. Mixing up the Double Electrum Ingot and Heavy Electrum Ingot will leave you with the wrong materials for the weapon you intend to upgrade. Group your crafting by ingot type to reduce errors: handle the butterfly sword, saw cleaver, battle axe, and broadsword together if you are working with double ingots, and handle the buster sword and greathammer together if you are working with heavy ingots.
Each recipe consumes exactly one template, one diamond weapon, and one ingot of the correct type. There is no alternative combination listed for any of the six weapons, so the ingredient sets above are the complete requirements for each upgrade.
Covers the mod’s in-game guide topics: Electrum Butterfly Sword Electrum Buster Sword Electrum Saw Cleaver Electrum Greathammer Electrum Battle Axe Electrum Broadsword