Make it right the first time

For CNC machining with only 2 pieces per order (prototypes, custom parts, low-volume aerospace/medical/R&D jobs), the best choice is clear: Make it right the first time.

Why? In tiny batches:
- One scrapped/reworked part = 50%+ defect rate whichk kills margin, wastes expensive material (e.g., titanium/Inconel), and requires costly re-setup.
- Setup (programming, fixturing, probing) dominates time (often 70-90%). Rushing risks chatter, poor finish, tolerance slips, or crashes.
- Rework loops destroy throughput more than conservative cuts ever could.
- Quality escapes hit hard: lost trust, rush replacements, overtime.

“Slow is smooth, smooth is fast.”  The pratice of make it right the first time delivers:
- Fewer interruptions : more machine time for real jobs.
- Reliable processes: faster future setups.
- Happy customers: repeat work.

Quick rule:
- FPY>95%?   Optimize speed (better tools, 5-axis, quick fixtures).
- FPY<90%?   Fix quality first (adaptive paths, probing, conservative params, checklists).

In CNC low-volume/high-mix, the shop that ships two perfect parts on time wins, not the one that rushes and remakes.