![]() ![]() Ah, that's the primary limitation to this handy tool. A built-in adjustable margin stop allows holes to be punched in exact alignment along the edges of a part. It can accurately punch the correct size holes, and do it quicker. The Whitney punch is a small hand held lever type punch with interchangeable dies. Drill them or punch them out with a tool. This generally means that the drilled rivet hole will have to be either machine countersunk, or compression dimpled to provide the proper nest for the rivet head.īut, before we get into countersinking and dimpling procedures, a few important comments regarding the drilling of rivet holes may be useful. The additional work generated by the use of flush rivets stems from the requirement to modify the drilled rivet hole to accept the cone shaped head of the flush rivet. ![]() Still, it is well for the first time builder to be aware that extra, time consuming, preparatory steps will be required if he elects to go all the way with flush riveting.Īs in the installation of conventional protruding head rivets, flush riveting starts with the drilling of the correct size hole for the rivet selected. However, extra work for a good purpose doesn't seem to deter most builders as they are more apt to be freer with their time than with their money. While labor costs aren't ordinarily a matter of concern in the construction of a homebuilt, the extra work could be. This is understandable for the extra labor costs could outweigh, by far, the slight performance gain realized from the extensive use of flush riveting. Unfortunately, since flush riveting is an expensive process, most manufacturers of general aviation aircraft have long limited the use of flush rivets to as few components as possible. The sleek smoothness of flush riveted skins is considered to be an essential factor in obtaining the maximum performance expected of high performance aircraft. Rivet manufacturers typically list the tolerances for the weight a rivet can support on the back of the package.Flush rivets are used, primarily, on external metal surfaces where good appearance and the elimination of unnecessary aerodynamic drag are important. Standard blind rivets work well for securing metal pieces that won’t need to support a lot of weight. ![]() Having settled on using blind rivets, the next issue comes down to size, style, and material. The rivet gun pulls the mandrel through the body, expanding it to lock the material in place between the head of the body and the newly “mushroomed” end. Types of RivetsĪll blind rivets consist of a mandrel and body. ![]() The automatic tools really help when you tend to do a lot of riveting in the course of your work. Manual tools work great when you don’t have a ton of work to do. A battery-powered tool does the entire process when you pull the trigger. With a manual rivet gun, you often have to activate the handle several times to complete the work. The more expensive battery-powered tools save your hands and automatically collect spent posts after applying the rivet. Manual rivet guns and battery-powered tools accomplish the same work. These call for either a hand riveter or one of the more recent battery-powered tools. In this article, we’re more concerned with DIY applications. We also intend to avoid any applications that require pneumatic guns or heavy-duty riveting. These get their name since you can “blindly” fasten them from one side of the material without accessing (or even seeing) the other side. For the purposes of this article, we’re going to stick with blind rivets. First Thing’s First – What is a Rivet Gun?īoth rivets and rivet guns come in a variety of flavors. ![]()
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