RV7AJeremy
Well Known Member
Another embarrassing question that I should know the answer to.
I attempted to do my first countersinks today and I followed the plans in the manual and I know the results cannot be correct. Section 5E reads ?Use the appropriate rivet or screw as a gage when you machine countersink. When the rivet/screw is flush, you are done. If there is going to be a dimpled skin riveted onto the machine countersunk surface, adjust the machine countersink tool a few ?clicks? deeper than flush. This will make the rivet/screw sit about .005? below flush when dropped into the hole.?
I did all this, tried it on scrap material, measured with my caliper, made sure it was all correct, and when I place the dimpled piece over the countersink they do not lay flat against each-other. I am using a DRDT2 and Cleveland dies. What am I doing wrong, do I need to go deeper and how far is too deep?
Also, I realize that I need some local help and I have already contacted my local EAA buddy but Have not heard back yet. There are not too many local people in Columbus MS building RV?s
I also searched the forums but did not find anything this basic.
Thanks in advance.
I attempted to do my first countersinks today and I followed the plans in the manual and I know the results cannot be correct. Section 5E reads ?Use the appropriate rivet or screw as a gage when you machine countersink. When the rivet/screw is flush, you are done. If there is going to be a dimpled skin riveted onto the machine countersunk surface, adjust the machine countersink tool a few ?clicks? deeper than flush. This will make the rivet/screw sit about .005? below flush when dropped into the hole.?
I did all this, tried it on scrap material, measured with my caliper, made sure it was all correct, and when I place the dimpled piece over the countersink they do not lay flat against each-other. I am using a DRDT2 and Cleveland dies. What am I doing wrong, do I need to go deeper and how far is too deep?
Also, I realize that I need some local help and I have already contacted my local EAA buddy but Have not heard back yet. There are not too many local people in Columbus MS building RV?s
I also searched the forums but did not find anything this basic.
Thanks in advance.