General Plastics FR-7100 Series
Comes in various densities of 4 to 40lbs. per cubic ft.
Max use temperatures of up to 104°C
ask min about how to interpret compressive strength (Technical Data Sheet)
General Plastics Indicates that the foam is stress-free, easy to machine, and uniform in density throughout the block
The following is an example of how the foam was used for a CNC-machined topographical map
LAST-A-FOAM® FR-4700 TOOLING FOAM BOARD
Foam comes in densities of 18, 30, and 40 lbs. per cubic ft.
Max use temperature of 204 °C
Technical Data Sheet (for compressive strength interpretation)
General plastics indicates this material is highly machinable, consistently uniform and dimensionally stable.
In a video on the website, they showed how the foam was used for a prepreg layup
The following is a picture of a mold machined from the foam
EB700 High-Temperature Epoxy Tooling Board
Comes in a density of 700kg/m3
Maximum Service temperature of up to 130oC
Comes in sheet sizes of 250 x 250 mm to 1500 x 500mm and thicknesses of 50mm and 100mm
In a question asked on the product page, somebody asked if this board can be used “As A Mould to Manufacture Pre-Preg Parts” which the answer was yet but, the CTE must be taken into account since it will limit the curing temperature.
The following is a picture of the material being machined into a mold
Precision Board High-Density Urethane (PBLT)
Comes in Densities ranging from 4 to 75 lbs. per cubic ft. (Custom sizes and densities available by request)
Sheet sizes range from 20” x 60” to 5' x 10'
Thickness from 1/2” to 24”
Maximum service temperature of 200oF (around 93.3oC) and flame resistant
Prepreg Layup is one of the indicated applications