3D Printer, SCARA 3D Printer, Sheet Metal

Front Facade

A bit more sheet metal work is in order. The front facade is necesary for both aesthetics and functionality. It helps to stiffen the frame in addition to enclosing the electronics. Made from the same 22 gauge mild steel used for the frame. Liberal use of machinist blue was needed for scribing the lines for the sheet metal brake.

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The front is then marked with a Sharpie for the area of material needing removal in order for the arms and platform to operate. Holes were drilled at each corner, then a nibbler was used to follow the lines.

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Finished with the sheet metal. The facade neatly encloses all the electronics.

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3D Printer, SCARA 3D Printer, Sheet Metal

Sheet Metal Frame

A large part of making this 3D printer portable is the ability to stow all the components in a protective shell. The frame also must be rigid enough to mount the components within. Starting with a sheet of 22 gauge mild steel, machinist blue was applied and the dimensions were scribed on the surface. A few minutes with the electric shears and the basic shape began to emerge.

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Using the sheetmetal brake to form the sides. The depth of each side is 2.5 inches.

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Holes for the arms to rotate through were cut into the back. This will give the arms a larger range of motion so that more of the platform can be utilized.

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Laying the all the parts in the sheetmetal frame to check the fit. The Arduino Mega and RAMPS 1.4 board will sit along side the power supply unit. In the picture below the platform is shown in its stowed position.

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Platform in printing position. The Z axis motor is sitting in its eventual orientation. The bracket holes have not yet been drilled for the stepper motor mount. The Z axis will ride on a 5/16″ x 18 allthread rod.

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Holes drilled throught the sheet metal and arms mounted to the frame.

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