Hi,
Learning to use the countersink cutter over here, and i've made up a dimpled token in the skin thickness (0.025") that i am using (on the airfoil practice kit part 1).
I initially countersunk until a rivet sat flush (-3 rivet). Then i tested the dimpled token in the hole and it didn't sit well (Large visible gap). So i followed Section 5 and went 0.007" (7 clicks) deeper on the cage, but the skin still felt wrong and had a large gap. It didn't seem right.
The question is; there is a table which specifies the CSK diameter for making the rivets flush in the Van's rivet specs (table VI https://www.vansaircraft.com/public/Specs.htm).
Is there a similar table for the countersunk diameters for differing hole sizes and differing skin thicknesses?
In the end, i used the calipers to measure the diameter of the underside of the dimple, and countersunk until i had the same diameter. The skin felt like it nested ok, but the hole was almost knife edge! (which i don't think is right), especially since the material was angle that was 0.080"!
So i don't know if i've done the right thing in measuring the dimple, or do i just do 0.007" (even though there is a gap between the sheet and the CSK material), and assume it will close up when riveted?
Thanks all for the advice. Sorry if the question doesn't make sense (it makes sense in my head )
Learning to use the countersink cutter over here, and i've made up a dimpled token in the skin thickness (0.025") that i am using (on the airfoil practice kit part 1).
I initially countersunk until a rivet sat flush (-3 rivet). Then i tested the dimpled token in the hole and it didn't sit well (Large visible gap). So i followed Section 5 and went 0.007" (7 clicks) deeper on the cage, but the skin still felt wrong and had a large gap. It didn't seem right.
The question is; there is a table which specifies the CSK diameter for making the rivets flush in the Van's rivet specs (table VI https://www.vansaircraft.com/public/Specs.htm).
Is there a similar table for the countersunk diameters for differing hole sizes and differing skin thicknesses?
In the end, i used the calipers to measure the diameter of the underside of the dimple, and countersunk until i had the same diameter. The skin felt like it nested ok, but the hole was almost knife edge! (which i don't think is right), especially since the material was angle that was 0.080"!
So i don't know if i've done the right thing in measuring the dimple, or do i just do 0.007" (even though there is a gap between the sheet and the CSK material), and assume it will close up when riveted?
Thanks all for the advice. Sorry if the question doesn't make sense (it makes sense in my head )
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