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Last-A-Foam FR-7100 Series

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Polyurethane Modeling Foam

LAST-A-FOAM® FR-7100 MULTI-USE CORE AND MODELING BOARD SERIES

Polyurethane Modeling Foam

This uniform polyurethane foam board is easily finished or painted for low-cost core applications, hand-carved models, prototypes, CNC-machined topographical maps, industrial patterns, and composite layup tools below 200ºF. his series is non-abrasive and can be machined with standard high-speed steel (HSS) cutting tools. It can also be cut cleanly with water jets and traditional wood-carving tools. Modeling foam is available in densities of 4 to 40 lbs. per cubic ft. as sheet stock as well as large-size blocks. The FR-7100 Series is ideal for applications that call for an economical, versatile and stable stock material.

Composite Core

FR-7100 boards can be used in multiple densities. The ability to combine high and low densities in one layup makes it an ideal material for composite layups. The material contains no mold-release agents to inhibit bonding.

Marine

These products are formulated to meet the demands of composite boat builders at competitive prices for above water line usage: freezer insulation, fish boxes, ineriors, seat mounting pads, steering wheel mountings, and decks.

Prototypes and Models

The FR-7100 material is suitable for hand-carved models, CNC-machined topographical maps, prototypes, and industrial patterns.

Tooling and Molds

LAST-A-FOAM® FR-7100 products have been used successfully in modeling foam tooling applications for many years. This material meets the needs of mold and toolmakers because it is stress-free, easy to machine, and uniform in density throughout the block. For applications requiring higher strength, greater detail, or increased heat and pressure resistance at process temperature, a density of 20 lb. per cubic foot is usually the best choice. Typical uses include composite layup tools, drape-forming tools and vacuum-form tools.

AdvantagesApplications
  • Fine cell structure supports very smooth finishes
  • Closed-cell foam does not absorb water or moisture
  • Easily painted and bonded
  • Economical and versatile
  • Dimensionally stable – will not warp, twist or bow
  • Grain-free surface
  • Easily shaped with a variety of cutting processes
  • Proofing NC/CNC machine programs
  • Prototype models
  • Composite core
  • Marine: Interior, mounting pads, heads, galleys, and more
  • Solar: Panel backing and support, parabolic mirror farms
  • Custom parts
  • Layup tools
  • Drape-forming tools
  • Vacuum-form tools

Sizing Chart

ProductsDensity (lbs/ft3)HeightWidthLength
FR-7104  4 24 48 96
FR-7106  6 24 48 96
FR-7107  7 24 48 96
FR-7108  8 24 48 96
FR-7110  10 24 48 96
FR-7110  10 25 18 100
FR-7112  12 25 48 96
FR-7115  15 25 48 96
FR-7118  18 18 48 96
FR-7120  20 18 48 96
FR-7130  30 12 48 100
FR-7135  35 12 24 96
FR-7140  40 12 26 100

Shown are maximum standard stock sizes based on density. Custom sizes are available. Cut sizes are available from .125 inches (3.175 mm) up to standard stock heights as listed above.

ProductsDensity (kg/m3)HeightWidthLength
FR-7104  64 60 120 240
FR-7106  96 60 120 240
FR-7107 112  60 120 240
FR-7108  128 60 120 240
FR-7110  160 60 120 240
FR-7110  160 62.5 45 250
FR-7112  192 62.5 120 240
FR-7115  240 62.5 120 240
FR-7118  288 45 120 240
FR-7120  320 45 120 240
FR-7130  481 30 120 250
FR-7135  561 30 60 240
FR-7140  641 30 65 250

Shown are maximum standard stock sizes based on density. Custom sizes are available. Cut sizes are available from .125 inches (3.175 mm) up to standard stock heights as listed above.

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