Primer on Laser-Parts

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Primer on Laser-Parts

Post by Yorkshireman » Sat Nov 18, 2006 12:59 pm

Question please...
If I have laser-cut parts, then these will a black slag-like substance on the edges. This stuff is hard and brittle. Do I have to file/grind this material off, before I can apply primer for painting? Of is it safe to assume, that the oxide layer is OK as a base for paint?

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Post by Jacin » Sun Nov 19, 2006 8:59 am

At work - we used to have those parts painted without removal of the "slag" - never had any problems other than it did look a little goofy at times (thicker plates). Really looked bad when the parts were gold zinc plated - I never understood why we accepted them.

I suppose under certain circumstances the "slag" could be more easily chipped off than paint would be - about the only functional negative I can really think of.

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