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

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