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Hi,
I am currently replacing the lower firewall on my Ercoupe.  The larger rivets came out nicely.  I drilled out the heads with a number drill (forget what size) drilled and punched out the remainder of the rivet.  I am going to do the same thing with the smaller rivets on the firewall but if anyone knows the correct number size I would appreciate it.  The drill is approximately.096 (3/32). I know that number drills should be used for drilling out AV rivets but I am not sure what the proper number size is.
Any help would be appreciated - not expected.  Probably a long shot that someone knows this off the cuff.
Thanks again
Norm Decou
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