Table 9.
Summary of the S/N effect of control factors and their optimum levels (layer thickness—A; infill density—B; infill Pattern—C; print speed—D; shell thickness—E).
| FDM Quality Characteristics | Highest Means S/N Effect | 2nd Highest Means S/N Effect | 3rd Highest Means S/N Effect | 4th Highest Means S/N Effect | Optimum Levels Combination of Control Factors |
|---|---|---|---|---|---|
| FDM energy consumption | Layer thickness | Print speed | Infill density | Infill pattern | A3/B1/C1/D3/E1 |
| FDM production time | Layer thickness | Print speed | Infill density | Infill pattern | A3/B1/C1/D3/E1 |
| FDM part weight | Infill density | Layer thickness | Shell thickness | Print speed | A3/B1/C1/D2/E1 |
| Dimensional tolerance | Shell thickness | Layer thickness | Infill density | Infill pattern | E1/A1/B2/C2/D2 |
| FDM hardness | Layer thickness | Shell thickness | Infill pattern | Infill density | A1/B2/C1/D2/E1 |
| FDM tensile strength | Infill density | Shell thickness | Layer thickness | Print speed | A2/B3/C3/D1/E3 |