I did a write-up as part of this post of why it’s so important to use the correct size countersinking pilot. To be consistent when countersinking, I use a Microstop Countersink drill guide and a 120 degree countersink pilot cutter. Some of the parts, such as the fiberglass tips or thicker metal pieces (from the EAA Sheet metal course I took, I learned the rule of thumb is metal ticker than 0.04 inches) need to be countersunk. It features the safe-lock locking collar for reliable joint integrity It meets the requirements of PS-CMR-3000. They meet and exceed strength requirements of Mil-N-25027 for torque-out and push-out of nut plates. PRODUCT DESCRIPTION CHERRYMAX® RIVET FEATURES The CherryMAX® rivet is a reliable, high strength structural fastener widely used in the aircraft industry. Since the project is using Pulled Rivets, the angle of the countersunk pulled rivets is 120 degrees, as opposed to solid aviation rivets, which use 100 degrees.įor that purpose, the factory has specific dimple dies for the thinner parts that are dimpled for flush riveting. Self-plugging rivet (SPR®) Cherry® 3/32 Self Plugging, locked spindle blind rivets are designed for the attachment of nut plates and other applications requiring the use of a 3/32 diameter, aluminum sleeve, self plugging rivet. ![]() Countersinking & Dimpling for flush riveting The factory has already drilled most of the holes, except for a few that need match drilling like the fiberglass tips.įor some minor alignment issues, I’m using some chucking reamer bits to correct the hole. I’ve also made myself a handy little reference block out of wood so I can quickly check sizing while I’m in the garage. ![]() The kit has a lot of different measurements, so I’ve compiled some information for drilling, countersinking and rivet sizing.
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