Printing with the Makerbot Replicator 2

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presentation prepared by Susan Shelley from the Loughborough Design School

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Printing with the Makerbot Replicator 2

  1. 1. Printing with the
  2. 2. In this presentation ► FDM ► Material Properties of PLA ► Exporting a file ► Maximum Build Volume ► Support Structures ► Bridging ► Supporting Angles ► Minimum Features Size ► Layer height - Quality vs. Speed
  3. 3. FDM 0
  4. 4. Material Properties of PLA Thermoplastic Hard Brittle Can be sanded or machined Can be primed and painted Starch based – biodegradable • Lots of colour choice • A very good material for FDM • • • • • •
  5. 5. Exporting a file • • • • Save as an .stl file. Set angle as 0.5 degrees. Set deviation as 0.03. Lower numbers mean better quality but increased processing time
  6. 6. Maximum Build Volume 15cm 15cm 28cm • Larger parts can be split into sections and super glued. • Each section must be saved as a separate .stl files.
  7. 7. Support Structures • If your design does not have a flat base it will require supports. • Unsupported features e.g. overhangs require a support structure. • Supports are automatically generated by the software. • The support material is the same material as the part, with weaker bonds between the layers. • Supports can be difficult to remove and parts require extra finishing time. • Consider the orientation of your build carefully.
  8. 8. Bridging • Must be across the same layer – exactly horizontal. • Must be a straight line. No curves. • Maximum gap approximately 2.5cm. • When the gap is too large the bridge sags.
  9. 9. Supporting Angles Simple overhangs can support up to 60°. For more complex shapes 45° is better. 45° 50° 55° 60° Clip Design To avoid using auto generated supports. 1. Add a supporting angle to the CAD data. 2. File away excess material after
  10. 10. Minimum Feature Size • Minimum feature size is 0.8mm • Better detail can be achieved on the z axis due to smaller layer heights. 3mm 4mm 5mm 6mm 7mm
  11. 11. Layer Height - Quality vs. Speed • Prints in layer heights of 0.5mm to 0.4mm. • Usually prints at 0.2mm as it is fast, has a good level of detail and is reliable. 0.1mm 0.2mm 0.3mm 0.4mm
  12. 12. Any Questions? S.Shelley@lboro.ac.uk

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