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  #1  
Old 03-26-2011, 6:18 PM
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Default "Egged" a Hole on a AK Rear Trunnion

Is this usable or salvagable? The bit walked slightly to the right, then yawed towards the left and wiped out the counter sink. Very hard to do w/o a drill press.
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  #2  
Old 03-26-2011, 6:21 PM
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Don't worry about it.
You are ok.
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Old 03-26-2011, 7:31 PM
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its a ak you are gtg
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Old 03-26-2011, 7:43 PM
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...

Last edited by killathrilla; 01-06-2013 at 7:48 AM..
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Old 03-26-2011, 8:01 PM
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Quote:
Originally Posted by killathrilla View Post
If it was the front trunnion...issue...rear trunnion not so much imho....when in doubt buy a new one ask the AK Team....
Fixed for ya.
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Old 03-26-2011, 8:03 PM
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I was expecting to see a real problem, but that's nothing to worry about.
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Old 03-26-2011, 8:15 PM
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Cool, thanks for the input. Good to know it can still be used. I have a back-up rear trunnion with the rivets still in it. I am going to wait for the build party to get the rivets out as I`m not going to make the same mistake twice.
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Old 03-26-2011, 8:40 PM
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I actually did the same thing to my underfolder rear trunnion earlier today.
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Old 03-26-2011, 8:42 PM
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i wish i saw this thread before i drilled into my rear trunnion, way easier/faster than drilling and tapping out with a punch

Last edited by G lock; 03-26-2011 at 9:58 PM.. Reason: fixed link
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Old 03-26-2011, 8:55 PM
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Going to threadjack here...

Salvegable?




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Old 03-26-2011, 9:30 PM
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The more material u take out the trunnion, the smaller the rivet head gets because more of the rivet gets squished inside when u squeeze it.
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Old 03-26-2011, 9:35 PM
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Quote:
Originally Posted by G lock View Post
i wish i saw this thread before i drilled into my rear trunnion, way easier/faster than drilling and tapping out with a punch
Link doesnt work.
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  #13  
Old 03-26-2011, 9:53 PM
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Quote:
Originally Posted by Aspec5vz View Post
Going to threadjack here...

Salvegable?




On the first pic: the rivet hole on the bottom right looks like the counter sink is completely gone. I can`t tell you if it`s a go or no go, so I will leave that to the AK Team.
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Old 03-26-2011, 9:58 PM
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Build it ...........

GTG.
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Old 03-27-2011, 4:57 AM
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...

Last edited by killathrilla; 01-06-2013 at 7:48 AM..
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  #16  
Old 03-27-2011, 5:27 AM
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Quote:
Originally Posted by thedrickel View Post
The more material u take out the trunnion, the smaller the rivet head gets because more of the rivet gets squished inside when u squeeze it.
Shim it with some of that metal duct tape. Works great if you accidentally drill out to much material or if the rivet is an undersized shank. The heads turn out the correct size.
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  #17  
Old 03-27-2011, 8:55 AM
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Quote:
Originally Posted by thedrickel View Post
The more material u take out the trunnion, the smaller the rivet head gets because more of the rivet gets squished inside when u squeeze it.
This.

And, there is an increased likelihood that the rivet will squash to one side, becoming a bit oval as it is crushed. Only cosmetic, but it motivates me to be careful when demiling trunnions.
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  #18  
Old 03-27-2011, 10:39 AM
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The rivets go in from the inside of the trunnion though where no material is lost. At least that's how they were when I took them out.
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  #19  
Old 03-27-2011, 4:31 PM
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Quote:
Originally Posted by thedrickel View Post
The more material u take out the trunnion, the smaller the rivet head gets because more of the rivet gets squished inside when u squeeze it.
100% on the mark ^^^
Build em!
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