5. Computer aspects of additive processes

Question 1

STL format

Answer 1

Standard Transform. Language

representation of parts surface
approximated by triangular facets

quality determined by the angle tolerance

Question 2

deviation height of an STL

Answer 2

h is proportional to C*A/R

C= 2/3*sqrt(3) if alphamin=60

Question 3

SLI

Answer 3

Slice layer interface stems from STL
cutting direction d
layer thickness e

Question 4

CLI

Answer 4

Common layer interface stems from SLI

slicing slices into sections with the hatching distance h

Question 5

Design for additive manufacturing (DFAM)

Answer 5

only put material where it is necessary

lighter, cheaper, more profitable

focus on topological optimisation and not construction constraints