Last updated 10 August 2026
Then there is no size you can machine that is in specification for every outcome, and the honest answer is that the job cannot be done as specified. Tighten the range with the plater, or open the tolerance with the customer.
Every ranged process takes its whole width out of the band upstream, because the part has to pass whichever value the process lands on. Stack enough of that, or use one process whose window is wider than the print tolerance, and the arithmetic returns a lower limit above the upper one.
That is not a rounding artifact and it is not the calculator failing. It is the correct answer to the question asked, and it is far cheaper to discover before the part is cut than at final inspection. Most tools would round it away or refuse to show it; this one reports it, and returns no limits at all, because a number handed over in that state will be held by somebody.
| On the print | .4990 / .5010 in |
|---|---|
| Process | Plating |
| Per side | 0.0002 to 0.002 in |
| The dimension gets | smaller at this operation |
| Pitch diameter shift per unit of per-side effect | 2 times |
| Hold before the process | no size holds |
Open this case in the calculator, and change the numbers.
Computed by ctrlPlanner. MIL-STD-870, Federal Screw Thread Specification H28.
This is one characteristic. A real part has forty of them through five operations, and every one needs the same walk when the drawing revises. That is what ctrlPlanner does from a ballooned print.
Open the demo · a print is already loaded, no sign up.