When working over a rigid form, this technique is called "flow forming." With an auto body hammer, lightly tap the metal that is … Years back I bought a shrinking hammer, also a shrinking dolly. Any time you hit sheet metal with steel hammer against a steel dolly, it stretches. When using this shrinking technique, it is common to use a pattern that groups five spots (four of them around one in the center). And even then, they have limited applications where they'll work at all. DO: 1. Get the panel reasonably flat w/ a hammer and dolley first 2. See all 25 photos If an area you are working gets weak and starts "oil canning" (meaning it's wavy and moves around when you push it) you'll need to use a shrinking hammer. Modern shrinking discs are effective, easy to use, and fairly economical. This method takes some practice, but works well. Do not use a “so called” shrinking hammer or rough-faced hammer for this procedure. Using the planishing hammer in conjunction with this process helps finalise things. My experience is that if you use it off dolly it acts pretty much as a regular hammer. I thought I would provide some pointers for anyone that is new to shrinking discs. I've been using this disc for years, and I am increasingly amazed by is effectiveness. The best is to use heat, a wood hammer, and a dolly. Working with 1mm sheet, it’s important to take your time with the hammer work. Shrinking metal is a special technique, and there are many ways to do it. For heavier sheet metal it is possible to use a heavier dolly. Using wood, you eliminate one of those hard points, so the metal can move without stretching. They do work, but you need an aluminum dolly, and a aluminum hammer to get them to work right. Q. Hammer on Dolly Technique. another hammer for the auto body tool drawer...I hope it works out. Heel, toe or other dolly that has a … It did an unbelivable job on my hood (I wish I took before pictures). If you are on dolly or very near on dolly, then you get the wrinkling, or shrinking … This month's column discusses the details of hammer and dolly use. You’ll damage the surface and defeat your purpose. ... You can use a shrinking disc, or to do some off-dolly hammering after heating a … That stops the shrinking, and controls the result of the operation. You can do a lot of forming with a handheld planishing hammer. In this technique, place the dolly precisely behind the affected area. While knocking down the panel with the metal-file can look like the easier option, you don’t really want to remove too much material and end up with something that’s paper-thin. Thanks for watching! There are two techniques of using an auto body hammer and dolly. Other methods of shrinking include serrated spinning discs mounted in body sanders or grinders. A. If I knew what I was doing I'd be better at it. The idea is that the soft hammer/dolly works with the corresponding metal waffle to gather the excess sheet metal.
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