I could just drop the imbuing folder to rebirth.. but the next one who cry "ah we need reforging imbuing is op and my runics now are worthless" will be jailed 
lesser runics maybe useless
You can only Re-Forge non-magical, craftable items. Both the item and the runic tool must be on top level of the backpack. Re-Forging will consume up to 10 charges from the runic tool, depending on the number of options selected. Runic tools can now be combined together if they are exactly the same type, up to a maximum of 100 charges. Higher runics have more budget and can add more properties but some properties are only possible with lower runics. For example, you cannot add "Auspicious/of Fortune" with a gold runic hammer. If no naming options (Grand, Exalted, Inspired, Sublime Artifice) are selected, the tool will simply add item properties randomly.
gear rank#1 runic reforge
#2 random loot gen(normal leather drops)
#3 imbued items/BRSK
#4 enhanced magical items