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RV-9A: Project Entry

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Riveted on the access plate platenuts

As before, I used my hand squeezer with the no-hole yoke to squeeze the rivets on the platenuts. Then I countersinked the center hole with the same #40 countersink bit. Just like the tank platenuts, the #40 bit tip is smaller than the hole it goes in to. This time, I countersunk one of the center holes to the depth of a #6 screw, then using the setting of the full cut on the Micro Stop Countersink Cage, I started on the other platenut center holes on the spar. I used small bursts on the drill to get the hole to the full depth of the Microstop Countersink Cage. I noticed that if I went for one full burst without stopping, the #40 countersink bit wallered around and did not make a perfectly round countersink.

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