Why is the Katana Blade Curved? At first, the Katana had straight blades, but as time passed, these received curves due to their efficiency in battle. Since the Katana are slicing weapons, its blades are made curved to execute a better cutting motion. You might be wondering when did the Katana first appear in history? Generally, the Katana didn’t appear until about the 15th century. Its predecessor, the Tachi, was an efficient cavalry weapon and … Continue reading Why is the Katana Blade Curved?