Topic 3.5: Rapid prototyping

Question 1

rapid prototyping

Answer 1

production of physical model using cad data
fast & efficient –> saves time and costs
additive process (materia; is added/fused)
produces little to no waste

Question 2

FDM

Answer 2

fused deposition modelling
3d printing technique that places melted layers of material (usually plastic) on a bed to build up a 3d model. filament is heated by a nozzle and then drawn on layer by layer

Adv: affordable, consumer grade tech, prints functional prototypes
disadv: slow

Question 3

SLA

Answer 3

Stereolithography
creates 3d models layer by layer by hardening molecules of a liquid polymer (resin) using a laser beam

adv: functional prototypes, high resolution allows small objects, little cleaning up
disadv: high cost, some resins not ideal for functional prototypes

Question 4

LOM

Answer 4

Laminated object manufacturing
a system that virtually slices a 3d cad model into thin layers, then cuts out each layer from a roll of material using a laser or plotter cutter. the layers can then be glued in the correct order to create the 3d model

adv: allows large parts to be made

Question 5

SLS

Answer 5

Selective Laser sintering
additive manufacturing technique that uses a (CO2) laser to fuse small particles of a material into a mass that has the desired 3d shape. powder is laid down and burnt with laser. unburnt powder can be removed and reused.

adv: little waste, printing of metal alloys (only system capable), prints functional prototypes
disadv: high cost