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  #1  
Old 07-04-2019, 09:14 PM
Jskyking Jskyking is offline
 
Join Date: Apr 2018
Location: Huntsville,AL
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Default Spar Primer

Getting ready to begin my spars and CH 13 mentions priming the countersink holes.
I was planning on applying using a small amount of primer and a q tip. At this time, I donít want to purchase a gallon of primer and prefer to use a rattle can.

Is there a brand that works? Eventually, I plan on using SWP60G2.
Thanks
Jt
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  #2  
Old 07-04-2019, 09:43 PM
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wirejock wirejock is offline
 
Join Date: Oct 2005
Location: Estes Park, CO
Posts: 3,451
Default Rattle can

Quote:
Originally Posted by Jskyking View Post
Getting ready to begin my spars and CH 13 mentions priming the countersink holes.
I was planning on applying using a small amount of primer and a q tip. At this time, I donít want to purchase a gallon of primer and prefer to use a rattle can.

Is there a brand that works? Eventually, I plan on using SWP60G2.
Thanks
Jt
For those tiny jobs I use NAPA 7220. SEM is also good. Spray into a cup and use a q-tip.
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  #3  
Old 07-05-2019, 07:09 AM
AlexC AlexC is offline
 
Join Date: May 2018
Location: Oviedo, FL
Posts: 29
Default spraying SEM

I used SEM #39683, which has a nice fan spray nozzle and is self-etching. However, instead of applying primer to each hole one at a time (there are a couple hundred per spar), I masked with a line of painter's tape down each side of the spar, and sprayed two light coats over all the holes.
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  #4  
Old 07-05-2019, 12:28 PM
rv7charlie rv7charlie is offline
 
Join Date: May 2006
Location: Pocahontas MS
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Default

Not cheap, but an alodine pen would be really fast for something like that, and protect at least as well as any paint/primer you can imagine.
https://www.amazon.com/s?k=alodine+p...l_1fu1vh11np_e
Can be used in a lot of other places, too.
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  #5  
Old 07-05-2019, 02:52 PM
Bsquared Bsquared is offline
 
Join Date: Mar 2018
Location: Valencia CA
Posts: 31
Default

Alodine (Bonderite) pen worked well for me. The conversion coating on the countersink and the cad plate on the screws should give all the protection you will need.
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