You may freely link to this site, and use it for non-commercial use subject to our terms of use. What should I do? When it is dull red, it's easier to bend; bright red/yellow is optimal. Manual sheet metal brakes for hobbyists and small or mobile businesses are available at affordable prices at most hardware stores. Bending with precision is not. There are 11 references cited in this article, which can be found at the bottom of the page. To bend your sheet metal with a vise and hammer, you will need: 2 wooden or metal form blocks Block of hardwood and heavy-duty hammer or mallet (optional) Calculator or online bend calculator Marker Protractor Rubber, plastic, or rawhide mallet Ruler or tape measure Sheet metal Vise Then place a 2x2 inch strip across the sheet metal, so the edge is aligned with the line drawn on the sheet metal. We use cookies to make wikiHow great. However, an aluminum can could be cut into pie wedges and welded back together in the form of a segmented elbow (like those used for vent pipe) if you really, really need one. Even if the object you build with this thin metal sheet is as simple as a tray or as complicated as a sculpture, if you're going to bend the sheet metal, you'll need to know how to make a straight and even bend. Padding bending (pad with metal or casting polyurethane) 13. Be sure that all three edges—sheet metal, straight edge, and 2x2—are perfectly aligned. Cause Analysis: The machine runs fast during the bending process, and the upward bending speed during the workpiece deformation is greater than the speed at which the operator is holding the workpiece by hand. When it has reached the angle you're trying for, release your pressure, and remove the clamps. If you want to bend it, in an elbow like a piece of pipe, that isn't going to work as the wall of the can is too thin. If your sheet metal is too thick, you may need special machinery, like a brake or a torch, to bend your sheet into the desired shape. However, thicker sheets are more prone to cracking, and then there are different grades of aluminium, so you will need to buy the right grade for the job too. In some cases, as with thicker sheet of metal, you may need to use a sheet metal brake to apply your bend. Yup, easier said than done. For example: if your desire bend is 45°, you will subtract this number from 180°, which will give you a bend angle of 135°. Copyright© To bend sheet metal in a vice, start by marking a line on the metal where you want to bend it. All information is provided "AS IS." Very slowly close the clamp jaws. To ascertain your K-Factor, inside radius, and material thickness (expressed as a decimal), you should use an, As an example, if you want to bend 24 gauge sheet metal at a 90° angle, the calculation would be: 0.017453 x 90 x (0.020 + 0.33 x 0.024) = 0.0438558984 inch bend allowance. ", "It was very useful to recollect the basic theories.". Will heating the aluminum make it easier to bend without a break? The solution is to have a radius on the tool that you’ll be using to bend the metal. Did you size the sheet of metal to take into consideration the stretching of the metal at the bend? With a second wood clamp, clamp another 2x2 inch strip to your sheet metal. If you really can’t stand to see another ad again, then please consider supporting our work with a contribution to wikiHow. If you're working with a thick sheet of metal, apply heat from a blowtorch along the bend line to soften it. Having the right tools on hand will help this process go smoothly and quickly. For tips on how to calculate your bend allowance, read on! suggestions. Bending it is simple. The inside edge of the strip should be parallel with the line you made on the sheet metal. The chimney has a rain cover at the top made of sheet metal. Bending a brittle metal beyond its limits could cause the metal to snap and break. Clamping your sheet metal to the straightedge is a must. How do I take out a crease line in rolled sheet metal? That depends on how you want to bend it. When it has reached the angle you're trying for, release your pressure, and remove the clamps. I used a forklift once to flatten out a piece of sheet with mixed results. By using our site, you agree to our. Website operating Before attempting to make your bend, you'll need to measure and mark the place where you want to make your bend on your sheet metal. The area near the bend deformed after bending. Here's how you can bend your sheet metal like a pro. % of people told us that this article helped them. Your tapping should start at one end of the evolving bend. Next time I'd want to sandwich the sheet between some flat bar first. Please help us continue to provide you with our trusted how-to guides and videos for free by whitelisting wikiHow on your ad blocker. Keep in mind that many kinds of fabricated metal have extremely high melting points, and applying your torch injudiciously could cause damage or do harm to your sheet metal or equipment. Hello, They have always been interesting metal products made of nuts, bolts... Hello All, I'm working on 18 ga. sheet metal project where a stamped recess... Hi, I have a sheet metal panel roof and siding pole barn which has an enclo... Finishing basement- fresh air ducting and drywall questions. For tips on how to calculate your bend allowance, read on! wikiHow is a “wiki,” similar to Wikipedia, which means that many of our articles are co-written by multiple authors. http://sheetmetal.me/formulas-and-functions/bend-allowance/, http://www.thefabricator.com/article/bending/the-basics-of-applying-bend-functions, http://navyaviation.tpub.com/14018/css/14018_540.htm, http://www.thefabricator.com/article/bending/bending-basics-the-fundamentals-of-heavy-bending, http://navyaviation.tpub.com/14018/css/14018_541.htm, http://www.thelibraryofmanufacturing.com/sheetmetal_bending.html, http://navyaviation.tpub.com/14018/css/14018_542.htm, http://sheetmetal.me/sheet-metal-gauge-chart/, http://sheetmetal.me/formulas-and-functions/bend-angles/, consider supporting our work with a contribution to wikiHow, Block of hardwood and heavy-duty hammer or mallet (optional). Thanks for reading. Apply an equal amount of force used to create the crease in the opposite direction of the crease. 1995-2018 MH Sub I, LLC dba Internet Brands. wikiHow is where trusted research and expert knowledge come together. With both hands pushing downward on the outer 2x2, begin bending the metal sheet, applying equal downward pressure at both ends. With both hands pushing downward on the outer 2x2, begin bending the metal sheet, applying equal downward pressure at both ends. Most frequently, expensive sheet metal bending tools, called brakes, are used to bend sheet metal, but you can also complete this task without one. Most of the time, my sheet size is wrong when I bend it. All tip submissions are carefully reviewed before being published. Open the clamp jaws wide enough for them to fit over the straightedge, sheet metal, and 2x2. Bending sheet metal by hand is a manageable task if the piece of sheet metal is small and thin enough to handle. We welcome your comments and Using GOOGLE Sheets. Hydraulic, computer controlled sheet metal brakes are very expensive and used for high-volume industrial or construction use. To create this article, 16 people, some anonymous, worked to edit and improve it over time. Then, tap your metal along the bend line with a rubber or plastic mallet until the sheet bends to the angle you want.