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Selective conductive areas in anodized extrusion

I need some localised areas they remain conductive in an aluminum extrusion after anodizing. Can I press-fit a "washer" into the extrusion that is plated with a material that is inert to the anodizing process in order to leave a conductive contact area within the anodized part?

Mike Stickelman
Product Design - Dayton, Ohio
2004

Yes, that's one way. Tapes, waxes, dipping compounds, caps and plugs are all possibilities. However, you may have a corrosion issue in that area, and unprotected aluminum will oxidize anyway, rendering it non-conductive. So the real answer is that you probably need to either chromate conversion coat or electroless nickel plate that area.

Ted Mooney, P.E.
Striving to live Aloha
(Ted can offer longterm or instant help)
finishing.com - Pine Beach, New Jersey
2004

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