Best method for removing rivets

[69a]

Ok, here is what I do. Get a short length of 1/2 " x 1" flat bar. Measure the head of the rivet and after drilling a 1/4" pilot hole in the bar, drill a recess in the bar deep enough so the bar neatly sits over the head of the rivet and flush with the surrounding metal. Clamp the bar with a couple of vise grips and drill a 1/4" hole right through the rivet. Remove the bar and gradually open up the hole until you just break through the side of the rivet. Only drill deep enough to just get past one thickness of the cross member. Now get the biggest punch, or a long bolt that will fit in the hole and bash the rivet apart.