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Spar waffle nick

Posted: Wed May 10, 2006 11:28 pm
by cjensen
Opps! :o I managed to nick the spar waffle reinforcement while trying to buck a rivet by myself tonight. That's the exact damn reason I don't do it by myself. Anyway, here's the pic.

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The worst one is to the southwest of the nutplate where you can see a very small chunk has been moved. The other is to the south/southeast of the nutplate where I managed to make a few minor scratches.

What can I do about this? Should I do anything since it's the waffle webbing? It's just not very accessible between those inboard ribs. Suggestions???

Here's a cutie!!

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Posted: Thu May 11, 2006 12:12 am
by tshort
Not sure how you're doing those, but a couple things I do:
1. Lots of tape around there to protect from misplaced bucking bars / rivet sets. A layer of duct tape will prevent a small nick as long as you realize you're off and stop quickly.

2. You can back rivet those rivets - use a heavy bucking bar on the front of the spar and the back rivet set inside - less likely to slip off that way.

I bet van's will tell you to buff it out and move on...

Thomas
-8 wings (we're in the same place...)

Posted: Thu May 11, 2006 2:08 am
by prestwich
Jeez, Chad, your daughter's gorgeous. Uh, I mean, I wouldn't worry about little tiny dings like that.

Posted: Thu May 11, 2006 8:56 am
by cjensen
prestwich wrote:Jeez, Chad, your daughter's gorgeous. Uh, I mean, I wouldn't worry about little tiny dings like that.
Daughter??? :o :o :o I know my wife looks young, but....sheesh! :lol:

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Posted: Thu May 11, 2006 8:59 am
by cjensen
tshort wrote:Not sure how you're doing those, but a couple things I do:
1. Lots of tape around there to protect from misplaced bucking bars / rivet sets. A layer of duct tape will prevent a small nick as long as you realize you're off and stop quickly.

2. You can back rivet those rivets - use a heavy bucking bar on the front of the spar and the back rivet set inside - less likely to slip off that way.

I bet van's will tell you to buff it out and move on...

Thomas
-8 wings (we're in the same place...)
DUH!! :bang: Backrivet!!! Man!! Now why didn't I even TRY to think of a better way! Bonehead. I'll backrivet the left side.

I started using tape AFTER I did that. :bang: Bonehead.

Now, since I'm clearly NOT thinking properly here...since it's nice and tight in there, what would be the best way of getting in there to buff and smooth it? I don't want to damage it further, or worse yet, damage the spar web...

Posted: Thu May 11, 2006 9:07 am
by Wicked Stick
How about a dremel tool with a very fine sandpaper bit on the end ?

Or do it by hand, polish with scotchbrite, and prime the areas where the annodizing was removed.

Posted: Thu May 11, 2006 9:45 am
by prestwich
cjensen wrote: Daughter??? :o :o :o I know my wife looks young, but....sheesh! :lol:
Ah, a couple of kids. I thought this hobby was just for old men. She looks about 15 in that first pic.

The advantage to maturity is, if I can't see the ding, scratch, clubbed head, crooked hole, etc., without my high-powered reading glasses, it doesn't need "fixing!" Seriously, I wouldn't spend two seconds thinking about a little tiny blemish like that.

Posted: Thu May 11, 2006 9:59 am
by cjensen
Yeah, she get's that a lot...don't tell her I told you this, but she'll be 27 in two weeks! She says "I'm getting soooo OLD!!!" :lol:

Anyway, back to the subject at hand. I think the dremel would work best, but I'm afraid I'll slip with that thing. I guess if I tape around the area, if it slips, I'd have some protection. 'Nuff said, I'll do that...

THANK YA!! :good job: