- Oct 14, 2026
Cleaning Machined Copper for Vacuum: Degreasing and Bake-Out
Machining oil, fingerprints and surface oxide ruin a vacuum. The cleaning sequence for copper UHV parts, who does each step and what to write on the RFQ.
- Sep 26, 2026
Anti Tarnish for Bare Copper Parts: Options That Work
Copper goes brown in air and nothing stops it for good. Chromate free passivation, lacquers, inhibitor packaging and the acceptance wording that avoids rejects.
- Sep 26, 2026
How to Specify Plating Thickness on a Copper Part Drawing
Contact faces need full thickness and everything else needs the minimum. How to specify plating thickness by area on a copper drawing so quotes match.
- Sep 26, 2026
Tin vs Silver Plating on Copper: Contacts and Busbars
Tin is cheap, soft and fine indoors. Silver has the lowest contact resistance and needs a nickel barrier. Where each belongs on copper and how to spec it.
- Sep 26, 2026
Copper Busbar Plating: Tin vs Nickel vs Silver Guide
Which plating to specify on a copper busbar, what each costs in contact resistance, temperature and money, and how to write the spec so quotes are comparable.
- Sep 26, 2026
Copper Surface Finish: Ra Values, Smearing, Polishing
Realistic Ra values for machined copper, why a soft metal smears instead of shearing and what to specify when the surface carries current, heat or plating.
- Sep 26, 2026
Deburring Copper Parts: Methods and What to Specify
Copper burrs on almost every edge and most of the removal is hand work. The methods shops use, what each one does to your part and how to write the callout.
- Sep 21, 2026
Joining Machined Copper: Brazing, Soldering, Welding
Copper pulls heat out of a joint faster than most metals, which changes how it is welded. The options, where each one fits and what to put on the drawing.