Uniform Polyurethane Foam Board FR-7100 Multi Use Core for Composites

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

Composite Core

The FR-7100 boards can be used in a number of densities. The ability to integrate high and low densities in one layup makes it a suitable material for composite layups. The material does not contain any mold-release agent to inhibit bonding.


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

Prototypes and Models

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

Tooling and Molds

The LAST-A-FOAM® FR-7100 products have been used effectively in modeling foam tooling applications for a number of years. This material meets the demands of mold and toolmakers because it is stress-free, and even in density throughout the block. For applications needing greater detail, higher strength, or increased heat and pressure resistance at process temperature, a density of 20 lb. per cubic foot is typically the ideal choice. Common uses include drape-forming tools, composite layup tools, and vacuum-form tools.


The main advantages of the FR-7100 are as follows:

  • Easily painted and bonded
  • Fine cell structure supports very smooth finishes
  • Closed-cell foam does not absorb water or moisture
  • Grain-free surface
  • Cost-effective and versatile
  • Dimensionally stable – will not twist, warp, or bow
  • Easily shaped with a number of cutting processes


The main applications of the FR-7100 are as follows:

  • Proofing NC/CNC machine programs
  • Layup tools
  • Composite core
  • Prototype models
  • Solar: Panel backing and support, parabolic mirror farms
  • Marine: Interior, galleys, heads, mounting pads, and more
  • Custom parts
  • Vacuum-form tools
  • Drape-forming tools

Sizing Chart


Products Density (lbs/ft3) Height Width Length
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



Products Density (kg/m3) Height Width Length
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 0.125 inches (3.175 mm) up to standard stock heights as listed above.

Other Equipment by this Supplier

While we only use edited and approved content for Azthena answers, it may on occasions provide incorrect responses. Please confirm any data provided with the related suppliers or authors. We do not provide medical advice, if you search for medical information you must always consult a medical professional before acting on any information provided.

Your questions, but not your email details will be shared with OpenAI and retained for 30 days in accordance with their privacy principles.

Please do not ask questions that use sensitive or confidential information.

Read the full Terms & Conditions.