What type of punch is ideal for removing rivets?
If the shank is unusually tight after the rivet head is removed, drill the rivet about two-thirds through the thickness of the material and then drive the rest of it out with a drift punch. Figure 4-98 shows the preferred procedure for removing universal rivets.
What do Joggles in removed rivet shanks indicate?
Flush rivets that show head slippage within the countersink or dimple, indicating either sheet bearing failure or rivet shear failure, must be removed for inspection and replacement. Joggles in removed rivet shanks indicate partial shear failure. Replace these rivets with the next larger size.
What is the difference between solid shank rivet and special rivet?
Two of the major types of rivets used in the aircraft are the common solid shank type, which must be driven using a bucking bar, and the special (blind) rivets, which may be installed where it is impossible to use a bucking bar. Solid shank rivets are generally used in repair work.
What’s the best way to remove a rivet head?
Once you’ve removed as much of the rivet head as possible, take a pin, prick, or center punch and place it in the middle of the rivet. Use your hammer to knock a dent into the center so your drill can grip the metal to penetrate it. Make sure you knock a good divot into the metal.
How do you put a divot in a rivet?
Use a punch to put a divot in the head of the rivet. Take a pin, center, or prick punch and hold it against the top of the rivet. Using your hammer, strike the end of the punch to create a small dent in the head of the rivet. Be careful not to miss the end of the punch and strike your hand with the hammer.
How big of drill bit do I need to remove rivet?
The end of the bit should be thin enough to fit snugly into the divot created by the punch so it can grip it. The drill bit should be the same size as the rivet or smaller. For example, for a 1⁄4 inch (0.64 cm) rivet, use a 1⁄4 inch (0.64 cm) or a 3⁄16 inch (0.48 cm) drill bit.