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Access Hole Covers

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dvanlanen

Joined: 25 Jul 2006
Posts: 122
Location: Madison, WI

Posted: Sat Jan 05, 2008 10:53 am Post subject: Access Hole Covers

Here is a dumb question for the list.  I am priming my faying surfaces with zinc chromate.  I am planning to have my airplane professionally painted when complete.  Do I need to prime the faying surfaces between the removable access hole covers and the skin around the access holes, or do the professional paint shops remove the access covers before painting?   

Thanks,  

Dave Van Lanen  

601XL - Elevator     [quote][b]

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Tim Juhl

Joined: 21 Mar 2006
Posts: 488
Location: "Thumb" of Michigan

Posted: Sat Jan 05, 2008 12:24 pm Post subject: Re: Access Hole Covers

Depends on the paint shop and the wishes of the owner of the aircraft.  I would suggest removing the covers and having them painted separately.  That way the whole surface of the cover will be painted as well as the area on the skin under the screw heads.  You will also avoid the issue of having to break the paint around the cover/skin and screw head/skin interfaces.  I prefer stainless steel machine screws rather than painted heads because in use the paint on the heads will chip.



I did spray primer around the inside of the inspection holes cut in the skin.



Tim

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_________________
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CFII
Champ L16A flying
Zodiac XL - Jabiru 3300A
Almost done! It'll fly in spring!

larry(at)macsmachine.com
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Posted: Sat Jan 05, 2008 12:34 pm Post subject: Access Hole Covers

It's a good question Dave,

It's likely they'd be removed if you've got a good paint shop.  I masked 

behind the inspection hole surfaces and painted wings and covers 

separately.  I think this is

the only way a good paint job can be done.  Masking behind inspection 

holes begins by taping behind the edges, then taping the tape to close 

without touching any metal.

It's awkward but doable,

see link for painting solutions at www.macsmachine.com/html/Paint.htm



Larry McFarland 601HDS at www.macsmachine.com



Dave VanLanen wrote:

 	  Quote: 	
		  

 Here is a dumb question for the list.  I am priming my faying surfaces 

 with zinc chromate.  I am planning to have my airplane professionally 

 painted when complete.  Do I need to prime the faying surfaces between 

 the removable access hole covers and the skin around the access holes, 

 or do the professional paint shops remove the access covers before 

 painting?



 Thanks,



 Dave Van Lanen



 601XL - Elevator



 *

 *

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