Fused Deposition Modeling | Xcentric Mold & Engineering

Fused Deposition Modeling

Fused Deposition Modeling (FDM) is a solid-based 3d printing and rapid prototyping process.  The process extrudes molten ABS plastic material, layer by layer, to build a 3D model.  As the material is layed it cools and fuses together with the previous layer.

The build material is added to the FDM machine in a filament form contained in a cartridge.
The FDM machine feeds the material from the cartridge up to a head that heats and melts the material. The head traverses in an X and Y direction and extrudes material onto a platform to create a two-dimensional cross section of the model.

This type of 3d printing has been around for decades and it has its uses.  Typically FDM is used for fit, some function, but mostly proof of concept.

We offer the following  3d printing services.   Before choosing the right service for your project take the time to understand each process.

Although 3-d printing has become the big buzz over the past few years, the technology is over 30 years old. Given the limitations on quality and speed to make an individual part, 3d printing still lags behind in traditional methods such as injection molding and cnc machining.  However, when proving concept and fit with some functionality requirements, 3d printing can be a good choice.

Consider the following chart when deciding which Rapid Manufacturing service is best for your project;

Process Type                            Requirements

  Process Type     Function     Fit     Testing     Proof of  
concept
  Tolerance  
<.005 in
Visual
   Quality   
Plastic  Material  
  Selection  
Metal  Material  
  Selection  
  Per Piece  
Price
  Tooling  
Cost
Tooling Life
Expectancy
3d Printing

Limited

Yes

no

Yes

Limited

Limited

Limited

Limited

High

N/A N/A
Injection Molding  

Yes

Yes

Yes

Yes

Yes

Yes

Unlimited

Limited

Low

Low-

Mid

Unlimited

CNC Machining

Yes

Yes

Yes

Yes

Yes

Yes

Limited

Unlimited

High

N/A N/A
Cast Urethane

Yes

Yes

Yes

Yes

Limited

Limited

Limited

N/A

High

High

< 50

X