October 17, 2026
Dear [Hiring manager's name],
For the past eight years I've programmed and run 5-axis CNC cells at Kestrel Precision Machining, holding aerospace structural parts to +/-0.0002 inches across more than 20,000 pieces at a 99.5% first-pass inspection rate. I'm applying for the Machinist opening at [Shop name] because that kind of tight-tolerance, high-consequence work is what I've built my whole career around.
Two changes I led still hold up months later. I built standardized tool libraries and proved programs offline in Mastercam before they reached the floor, cutting average changeover time from 95 to 58 minutes. Adding in-process checks tied to tool-change intervals drove our cell's scrap rate from 3.9% down to 1.5% within eight months, with zero customer rejections across three years of AS9100 first article submissions.
I completed a state-registered machinist apprenticeship before moving into 5-axis programming, and I still run first article inspection packages myself using CMM and surface-plate methods on titanium, Inconel and stainless parts. I hold NIMS Machining Level II, a Mastercam Certified Professional credential and an ASME GD&T Professional certification.
I'd welcome the chance to talk through a recent first article package or changeover sheet with your team at [Shop name]. Thank you for your time and consideration.
Respectfully,
Yuki Jackson
