3D Printing

1 minute read

Theory of 3D Printing

There are three types of 3D printing

Fused Deposition Modelling (FDM)

This technology melts plastic then solidify it through cooling to extrude solid layer by layer. PLA and ABS are the two kinds of plastic commonly used for printing.

Stereo Lithography (SLA)

This printer has very high precision. The solid is created from a resin, which is cured and hardened by laser light.

Selective Laser Sintering (SLS)

Layers of powder spread over part and sintered by laser. The material can extends up to metals.

Note: the ECE department do not have one

Tinkerine FDM Printer

Advantages

  • Cheaper printer and material
  • Durable parts
  • Immediate access

Disadvantages

  • Low resolution
  • Low accuracy
  • Design constraints (poorer performance at support materials)

Objet SLA Printer

Advantages

  • Can make almost anything - even parts that are impossible to machine; parts can include:
    • Thin and fragile parts
    • Working assemblies
    • Overhangs
    • Different surface finish (glossy, matte, etc)
  • Professional firmware and software

Disadvantages

  • Expensive machine and material
  • No immediate access
  • Printed parts are very brittle

Part Ordering

To order parts, have the parts inspected and approved. Then email 3d@ece.ubc.ca. The subject should follow the format:

Course / Group / Printer

The body should contain:

  • Number of copies
  • Special material and other special instructions

Attach the quantized .STL files in the email.

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