What do mean by FDM

 FUSED DEPOSITION MODELING (FDM)

FDM is the second most widely used rapid prototyping technology, after stereolithography. A plastic filament is unwound from a coil and supplies material to an extrusion nozzle. The nozzle is heated to melt the plastic and has a mechanism which allows the flow of the melted plastic to be turned on and off The nozzle is mounted to a mechanical stage which can be moved in both horizontal and vertical directions.

As the nozzle is moved over the table in the required geometry, it deposits a thin bead of extruded plastic to form each layer The plastic hardens immediately after being Squirted from the nozzle and bonds to the layer below. The entire system is contained within a chamber which is held at a temperature just below the melting point of the plastic.

Can be used in any office environment without special venting or facility requirements.

 Materials

ABS. Acrylonitrile-butadiene-

styrene

ABS is a common end-use thermoplastic material with considerable durability. This material is ideal for a variety of modeling and prototyping activities due to its stiffness and ease off finishing

- ABS Materials Specifications Tensile Strength 5,000 psi

Tensile Modulus 360,000 psi - Elongation 50.00%

Flexural Strength 9,500 psi

Rockwell Hardness R105

Vicat Softening Point 220 (v) Specific Gravity 1.05 g/cc

Polysulfone

This tough, rigid, high-strength thermoplastic has a best deflection temperature of 343F (174°C), and maintains its properties overwide temperature range. Transparent, opaque a glaw-fiber reinforced grades we available