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  #1  
Old 04-06-2011, 12:04 PM
mbetti mbetti is offline
 
Join Date: Feb 2007
Location: Iron Mountain, MI
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Default Wing spars

It says to prime the holes after countersinking the spar. What ideas are there out there on doing this with out making a mess.
Mike
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  #2  
Old 04-06-2011, 12:34 PM
datsclark datsclark is offline
 
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Location: Redwood City, CA
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Default

On pretty easy option: I put some primer in a cup, and used a q-tip to touch up each countersunk hole. No mess.
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  #3  
Old 04-06-2011, 06:40 PM
mbetti mbetti is offline
 
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Thanks, that works great.
Mike
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  #4  
Old 04-06-2011, 10:41 PM
mcencula mcencula is offline
 
Join Date: Jul 2007
Location: Delaware, OH
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Default Masking tape

Another idea is to apply a strip of that blue masking tape over the flange before countersinking. Then when you countersink through the tape, you end up with perfectly masked holes ready to be sprayed.

Don't forget to set your microstop cage a couple clicks deeper to compensate for the tape thickness.

Good luck,
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  #5  
Old 04-08-2011, 06:32 PM
Flying Scotsman Flying Scotsman is offline
 
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We alodined ours. Just take a little acid brush and dip it in Alodine, then put a drop in the countersink. Surface tension will hold the drop there, completely filling the hole/countersink...you can do a couple dozen, let them sit for a bit, then wipe down with a wet paper towel and blow dry. Looks nice, quick and easy, and no need to mess with paint (also avoids the loss of countersink depth due to paint thickness).

Just another option...

Steve
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  #6  
Old 04-08-2011, 07:46 PM
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Walt Walt is online now
 
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Alodine stick followed by Q tip with primer.
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