Tag Archives: Huanyu hot knife

We didn’t expect a foam cutter to feel like a “power tool,” but the Huanyu Hot Knife Foam Cutter (200W) comes close. With air-cooled heat and a claimed 500℃ output, it warms up fast and glides through stubborn materials we usually fight—EPP and EPS for props, EVA and sponge for padding, even KT board for quick mockups. The included 6” and 8” straight blades give us two distinct personalities: the shorter blade for tighter control, the longer one for confident, sweeping cuts. It’s not a delicate craft pen, and it rewards patience—steady hands, slow passes, and a clear workspace. Still, for clean edges and less crumbling mess, it’s a compelling upgrade.