Knife for Cutting Styrofoam LUND model 78894 — LUND knife for polystyrene cutting

The LUND knife for polystyrene cutting model 78894 is a hand tool designed for trimming, shaping and cutting styrofoam and EPS insulation sheets. It provides a straightforward, manually operated solution for making straight or shaped cuts in foam panels, craft materials and lightweight insulation on site or in a workshop. The tool is intended for users who need controlled cutting without power equipment and where precision and neat edges are required.

Advantages

The LUND polystyrene knife offers a simple ergonomic handle and a blade geometry tuned for slicing foam cleanly, reducing tearing and dust compared with improvised cutters. Its lightweight construction makes the tool easy to handle for extended tasks, and the design facilitates accurate trimming of panels and shaped pieces. The knife is compatible with common workspace use, allowing straightforward blade replacement and maintenance.

Suitable for

• Cutting and trimming polystyrene (styrofoam) insulation panels
• Shaping foam elements for model making and prototyping
• On-site insulation installation and adjustment
• Craftwork and hobby projects involving foam

Key specifications

• Tool type: manual knife for foam/polystyrene
• Intended materials: expanded polystyrene (EPS), styrofoam and similar soft foams
• Construction: lightweight hand tool with replaceable cutting element
• Use case: straight and shaped cutting, trimming and finishing of foam panels

How to use

Position the polystyrene panel on a stable, flat surface and mark the cutting line. Hold the LUND knife firmly by the handle and guide the blade along the marked line with steady, even pressure to obtain a clean cut. For thicker panels perform several shallow passes rather than a single deep cut. Replace the cutting element according to wear instructions or when cuts become uneven. Keep hands clear of the blade path and secure the material to prevent slipping.

Usage recommendations

Use personal protective equipment such as gloves and eye protection when cutting. Work in a well-ventilated area and clean up foam particles after cutting to maintain a safe workspace. For best results on thick or dense panels, combine the knife with a straightedge guide and proceed with multiple controlled passes instead of forcing a single deep cut.