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MB-0720 Modeling Board

Polyurethane Board for Modeling

Key Properties of MB-0720 include:
  • Fine surface structure
  • Easily shaped and machined
  • Low coefficient of thermal expansion
  • Good dimensional stability

Applications:

  • Master Models
  • Cubing Models
  • Patterns
  

HR-720-1.1

 

Resources:

Typical Properties

 
Color Brown
Density (ρ) 45 lb/ft3 [0.72 g/cm3]
Hardness 60 – 65 Shore D
Flexural Strength 3,600 – 4,400 psi [25 – 30 MPa]
Compressive Strength 2,900 – 3,600 psi [20 – 25 MPa]
Coefficient of Thermal Expansion (CTE) (28 – 31) x 10-6 in/in°F [(50.4 – 55.8 ) x 10-6 m/m/°C]
Deflection Temperature, HDT 167 – 176°F [75 – 80°C]

 

Available Sizes

1.0” x 19.7 x 59.1 (25mm x 500mm x 1500mm)

2.0” x 19.7 x 59.1 (50mm x 500mm x 1500mm)
3.0” x 19.7 x 59.1 (75mm x 500mm x 1500mm)
3.9” x 19.7 x 59.1 (100mm x 500mm x 1500mm)
5.9” x 19.7 x 59.1 (150mm x 500mm x 1500mm)
7.9” x 19.7 x 59.1 (200mm x 500mm x 1500mm)

 

Machining

Cutters:
Roughing – 1”(25.4mm) Hog Ball End Mill, 4-flute, HS Steel 8% Cobalt
Finishing – 5/8”(15.875mm) Ball End Mill, 2-flute carbide


Depth:
Roughing – varied from ¼”(6.35mm) to 2.5”(63.5mm) with 40% stepover
Finishing: 1/8”(3.175mm)deep leaving 0.002” (0.050mm) scallop height

Blades: 

Use carbide offset-tooth blade for faster cutting and less binding

Roughing speed: 1,600RPM ∙ Roughing Feed 40IPM
Finishing speed: 10,000RPM ∙ Finishing feed 100IPM

 

Safety

Good workplace ventilation is to be ensured during processing. At the same time, the employer’s liability insurance association’s industrial hygiene safety regulations regarding the handling of reaction resins and their hardeners are to be observed. Please take heed of the appropriate safety data sheets.

The material should be stored flat and in a dry place. Temperature variations should be avoided during storage and transportation.

The product should be machined at ambient room temperature (68-77°F (20-25°C)).

 

PRODUCTS