gudkatch, the info Tony gave you is great. I wish there had been someone around when I started, that could have explained it that well. If you want to do a little custom work on the blades, try using epoxy to build up the bulk after you have joined the hooks and blades with solder. Make sure you de-flux them with solvent just the way Tony expained and then use epoxy to form the depth like you want. You can paint them just like solder. By using more or less solder at one end or the other you can change the fall/drop characteristics of the bait. Try some 90 degree bend jig hooks with the eye coming up a half to a third of the waay to the front of the blade. You can change the vertical action of the teardrop into the horizontal action of a flutter bait. You can sandwich the 90 degree hook between to blades and make a very nice silhouette bait.
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