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topic 6818

Selective masking to survive Al anodising process


Need to confirm the existence and source for a masking paint to survive aluminium anodising.

Here's the process, proposed for an ALU extrusion

1. Iridite (Chem conversion)

2. Apply masking paint to selected area inside 0.08 in x 0.3 deep slots.

3. Anodise

4. Remove masking paint, leaving a conductive Iridite oxidation protective coating on an otherwise non conductive anodised part. (peel off mask? , chemical removal?)

looking forward to some confirmation

Drew Phillips
power systems - Penang, Malaysia


That's how ya do it! Seriously...that's how I do it, and as long as you have a clean, chromated surface, and a quality maskant, it will work great. Just allow plenty of cure time for your paint.

Marc Green
Marc Green
anodizer - Boise, Idaho


There are both peelable maskants and ones that do not peel available.

Tim Cornelius
- Texarkana, Arkansas USA

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