Thermal Foam Cutter XTREME 2991 — hot knife for cutting polystyrene, 8 W

The XTREME 2991 thermal foam cutter is a compact hot knife designed for cutting polystyrene and similar foam materials. With an 8 W heating element it melts foam cleanly to produce precise edges and smooth contours. Its form factor and controlled heat output make it suitable for small-scale model making, insulation trimming and bespoke craft projects that require accurate, straight or curved cuts in foam boards and blocks.

Advantages

The 8 W heating element delivers steady, predictable heat for consistent cutting without excessive burning or charring. The hot knife provides clean melt-cut edges that reduce the need for additional sanding or finishing. Its compact design allows for good control during detailed shaping and trimming tasks, while the simple heating principle ensures quick warm-up and straightforward operation.

Suitable for

• Model making and architectural mock-ups
• Thermal insulation trimming and fitting
• Packaging prototyping and custom foam inserts
• Hobby and craft projects with polystyrene or similar foams

Key specifications

• Heating power: 8 W for controlled melting
• Intended material: polystyrene and comparable soft foams
• Cut type: melt-cut for smooth edges and reduced debris
• Design focus: handheld use and detail work

How to use

Allow the cutter to reach operating temperature according to the manufacturer's guidance before making contact with the foam. Hold the tool steadily and draw the heated blade or wire through the foam at a steady pace to achieve a clean melt cut; slower passes produce deeper cuts while faster motion gives shallower cuts. For curved shapes or fine details, use controlled, gradual movements and avoid forcing the tool, which could cause irregular edges. Ensure proper ventilation during cutting to disperse fumes released by heated foam.

Usage recommendations

Use on flat, stable surfaces and secure foam pieces to prevent shifting. Wear appropriate personal protection such as heat-resistant gloves and eye protection when cutting. Avoid prolonged inhalation of fumes—work in a well-ventilated area or use local extraction. Allow the heating element to cool before storing or changing attachments.