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-   -   Paint in Composite Wing Hinge lines..how to remove?? (https://www.rcuniverse.com/forum/composites-fabrication-repair-97/11477557-paint-composite-wing-hinge-lines-how-remove.html)

EPR Ratio 04-14-2013 05:11 AM

Paint in Composite Wing Hinge lines..how to remove??
 
Hello Experts, Ineed your wisdom!

Irecently had an all-composite jet painted. When Igot it it was gelcoat white, and I had it primered and painted with PPG. My problem is, now, after painting, the paint settled in the "live" hinge lines that were cut by the fatory and now I have two issues:

1. The control surfaces are stiff.
2. The paint will eventually crack and peel from these hi-flex areas.

Question:What is the best way to carefully and accurately remove the paint from these areas?My idea was to set up a jig and use a straight edge and a Dremel tool with the router base to rout the paint out. However, I'm hesitant to get a Dremel tool so close to this wing, for fear of damage. Is there a better, SMARTERway?

Thanks in advance!!

SCALECRAFT 04-14-2013 06:08 AM

RE: Paint in Composite Wing Hinge lines..how to remove??
 
I would 600 wet sand it away. Very carefully.

If it is very thick use 400. And don't use that guy again.
Steve

dbsonic 04-14-2013 07:12 PM

RE: Paint in Composite Wing Hinge lines..how to remove??
 
You might try a triangle file with a fine tooth to it. And carefully file out the paint but dont cut into the kevlar/nylon hinge material. This is typically how you manually create live hinges in a diy kevlar live hinge layup.

wyowindworks 04-14-2013 07:25 PM

RE: Paint in Composite Wing Hinge lines..how to remove??
 
dbsonic has got it right.  Clean it out with a triangle file.


EPR Ratio 04-15-2013 03:12 AM

RE: Paint in Composite Wing Hinge lines..how to remove??
 
Thanks for the great ideas! I like the triangle file idea....

vicman 04-15-2013 04:39 AM

RE: Paint in Composite Wing Hinge lines..how to remove??
 
You might want to scribe a line before hitting it with the file.


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