October 30, 2008 - Cowl Prep for Priming

Back to the cowl.  The task now is to get it ready for priming. 

I cleaned up the air inlet area.  Made the countersinkings a little deeper so the screw heads would be flush.
 
I scuffed the cowl up with 320 sandpaper to improve primer adhesion.  Then I applied Loehle WonderFil to the cowl and spinner.  The WonderFil is supposed to fill up pinholes and scratches. 
 
You wipe it on like car wax almost.  It dries to a chalky white after 15 minutes or so.  Then you just wipe it off.
 
Both cowl halves after applying the WonderFil.
 
The air inlet ramps on the top cowl.
 
The spinner after applying WonderFil.
 
The WonderFil is a chalky, white substance. 
 
You can see all the holes that are now filled with the dried white WonderFil.
 
I was surprised by how many holes and imperfections were in the cowl halves. 
 
The bottom cowl.
 
 
 
OK, now we're ready for priming.
 
 
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