It might be that the wizards already knew how to make such daggers.

Her Grace commanded us to make chainmail and armor, swords and daggers and axes, all in great numbers.

Actually, the name dogwood is an adulteration of "dagwood," referring to a time when the wood was used to make daggers for skewering meat.

Bladesmithing is the art of making knives, swords, daggers and other blades using a forge, hammer, anvil, and other smithing tools.

"So instead you make daggers that survive re-entry burns?"

"Obsidian was also used by the ancient Mexicans to make knives and daggers," Tom went on.

Other bottles were being smashed against the counter to make daggers of jagged glass.

Jon had made daggers for himself, Sam, and Lord Commander Mormont, and he'd given Sam a spearhead, an old broken horn, and some arrowheads.

Part of his job while on board was to make hatchets, daggers, and knives "for the Indian trade" (p. 15).

The late Thomas H. Everett, author of the 10-volume "Encyclopedia of Horticulture," said the wood was used to make daggers to skewer meat.