Metal in sheets is known as sheet metal. These plates are thinner than plate metal (0.25 inches) but thicker than a foil (0.006 inches). These plates are available in steel and aluminium in various thickness, coatings for corrosion resistance or surface finish. A large cast of metal is taken and rolled into long ribbons of desired thickness. These long flat pieces are then rolled into a coil or cut to pieces before sending to the warehouses.
Sheet metal design is done by punching the approximately shaped mould onto the metal. The machines used for such design is capable of making specific designs which are very intricate. The moulds are punched into the sheet many times till the desired results are obtained. These punches could be hundreds or thousands in a minute.
Another method of designing on a metal sheet is by using Melbourne laser cutting tools. These laser tools are capable of vaporizing half-inch steel plate with 0.05 inch precision. The laser cutting machines also have auto loading capabilities and blazing cutting speed. The disadvantage of these machines is that only straight edges can be cut by them. All 3d features available on their counterparts cannot be obtained by these powerful cutters. Absence of tools makes the whole size limited and thus need proper attention. Painted and galvanized metals can produce gaseous cyanide or chlorine when come in contact with lasers, care should be taken while cutting such materials. Laser machines are quite expensive with a good cutting speed but cutting is limited to only straight lines.
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