VDI 3400 Surface VS Yick Sang Texture Comparison Chart
| VDI | Raum | Yick Sang Texture | Ra | Minimum Draft Angle | Recommended Draft Angle |
| 0 | 0.10 | YS20037 | 0.56 | 0.2 | 0-0.2 |
| 3 | 0.15 | YS20037 | 0.56 | 0.2 | 0.1-0.2 |
| 6 | 0.20 | YS20037 | 0.56 | 0.2 | 0.1-0.2 |
| 9 | 0.30 | YS20037 | 0.56 | 0.2 | 0.1-0.2 |
| 12 | 0.40 | YS20037 | 0.56 | 0.2 | 0.15-0.2 |
| 15 | 0.55 | YS20037 | 0.56 | 0.2 | 0.2 |
| 18 | 0.80 | YS20039 | 0.92 | 0.3 | 0.3 |
| 21 | 1.10 | YS20040 | 1.09 | 0.5 | 0.5 |
| 24 | 1.60 | YS20002 | 2.14 | 1.5 | 1-1.5 |
| 27 | 2.20 | YS20002 | 2.14 | 1.5 | 1.5 |
| 30 | 3.20 | YS20046 | 3.26 | 2 | 2 |
| 33 | 4.50 | YS20007 | 4.50 | 3 | 3 |
| 36 | 6.30 | YS20070 | 6.28 | 3 | 3 |
| 39 | 9.00 | YS20069 | 9.17 | 5 | 5 |
| 42 | 12.50 | YS20028 | 11.94 | 6 | 6 |
| 45 | 18.00 | 10 | 10 |
Why draft angle injection molding
- Reduces the chance of damage to the part due to friction during release
- Reduces wear and tear and chances of damage to the mold
- Ensures a uniform, smooth, unscratched finish when required
- Ensures the integrity and uniformity of other surface finishes and textures
- Reduces overall cooling time by lessening or eliminating the need for unconventional ejection setups
- Most, if not all, of these benefits offer either direct or indirect overall production cost reductions
