In aerospace tooling, "close enough" isn't a tolerance band — it's a failure mode. Here's what tight-tolerance CNC machining actually protects against.
Aerospace tooling components — top plates, die blocks, punch holders, die housings — carry loads and cycle counts that ordinary industrial parts never see. A punch holder that's off by a fraction of a millimetre doesn't just wear faster; it can shift the alignment of every punch it carries, and that error compounds with every stroke of the press.
That's why our CNC machining process for this category starts before a single cut is made: reviewing the drawing for critical dimensions and datums, selecting alloy steel stock verified against the material certificate, and planning the operation sequence so that finishing cuts are made last, once the part has stabilised.
High-strength alloy steel is machined on our VMCs and turning centres under Fanuc and Siemens control, with flood coolant to manage heat and protect surface finish. Where a component needs it, we heat-treat and precision-grind after machining — the punch holder is a good example, where hardness and dimensional accuracy both have to hold at once.
Every finished component goes through 100% dimensional inspection before it's released. For aerospace and defence customers, that's not a courtesy — it's the baseline our AS9100D-scoped quality system requires, and it's the reason repeat customers keep sending us the parts they can't afford to get wrong.
