Tolerance Guide
| A. | Dimensions one side of parting |
| 0" - 3" ±0.030" | |
| 3" - 6" ±0.040" | |
| 6" - 9" ±0.050" | |
| 9" - 12" ±0.060" | |
| 12" Plus ±0.060" ±0.002 in/in |
| B. | Dimensions across parting |
| 1 to 10 sq. in. add ±0.015" | |
| 10 to 100 sq. in. add ±0.030" | |
| 100 to 250 sq. in. add ±0.045" | |
| 250 to 500 sq. in. add ±0.065" |
| C. | Core dimensions Shell cores |
| 0" - 6" ±0.018 | |
| 6" - 12" ±0.025 | |
| 12" Plus ±0.040" ±0.001 in/in | |
| Add 0.015 across parting | |
| CO2, Oil Sand | |
| Same as A and B Dimensions |
| D. | Draft angles |
| D1 Outside 1º - 3º | |
| D2 Internal pockets | |
| Drag 1º - 5º | |
| Cope 3º - 7º | |
| D3 Core box oil sand 2º - 5º | |
| Core box shell 1/2º - 3º |
| E. | Dimensions between 2 cores |
| 0" - 6" ±0.045" | |
| 6" - 12" ±0.06" | |
| 12" - Plus ±0.06" ±0.002 in/in |
| F. | Dimensions between core and mold |
| Same as E |
| G. | Parting line fins |
| ±0.015 Grind finish required | |
| ±0.030 Commercial quality |
| H. | Gate and Riser connection |
| ±0.015 Special grinding required | |
| ±0.06" - 0.03" Commercial quality |
| I. | Wall thickness |
| Up to 3/8" +0.060" - 0.030" | |
| 3/8 Plus ±10% of wall thickness |
| J. | Mismatch or Mold and/or core shift |
| 0" - 8" ±0.030" | |
| 8" - 18" ±0.060" | |
| 18" Plus ±0.090" |
| K. | Core fins |
| ±0.015" - Special quality" | |
| ±0.030" - Commercial quality |