Here Xiaobian sorted out a set of PRUSA-based 3D printer DIY tutorials. This 3D printer maximum print size can reach 15.7x15.7x15.7 inches, pay attention to inches! It is equivalent to about 40 cm, which is created by a Portuguese, a Portuguese called Aldric Negrier.
Background introduction
Since the 2005 Mechanical Engineering Senior Lecturer ADRIAN BOWYER, Dr. ADRIAN BOWYER launched a RePrap Movement, a series of open source 3D printer, including Prusa Mendel, has been derived from the REPRAP movement. The large-size 3D printer made by Negrier is based on another version of Prusa Titan of Prusa i3 3D printer.
In fact, the concept of Titan first is the concept of BlueprinTed, but the company finally decided not to publicize its prUSA I3D printer design drawings. Despite this, Negrier is still obsessed with this, and named the 3D printer designed as "Mega Prusa I3 Rework", shared to the public. Mega Prusa i3 Rework basically is the enlarged version of Prusa I3 Rework, and the maximum print size support is 8 times the original Prusa I3 Rework, which is also more accurate in terms of printing accuracy.
Material list
Thread rod, smooth rod, screw / nut / gasket, acrylic border (a support structure, a supporting structure, a 12 straight bearing, 1 block 450x450x3mm aluminum plate, 1 piece 450x400x3mm glass plate, 1 RAMPS board, 4 Step in motors, etc. Of course, there are some parts that require 3D printing.
2.DIY tutorial (on)
It is understood that Most components of MEGA Prusa I3 Rework are 3D printing or laser cutting, all material cost is only 300 euros (approximately RMB 1900).
Step1: Cutting all tabby and threaded rod
Compared with Prusa I3 Rework, the overall structure of Mega Prusa I3 Rework is larger, and therefore heavily, there is a 12 mm slider with a higher strength of the original 8 mm slide. The rod to cut the rod with a pencil and a ruler mark, cut the slider according to the size of the grinding wheel, and finally use the grinding machine to be polished.
Step2: CNC laser cutting machine as an acrylic border
Cut the acrylic plate into a 600x600x100mm size with a CNC machine or a laser cutting machine, and an additional support rack.
Step3: Install X / Y axis rail and the entire drive system
Next, the level and vertical frame of MEGA Prusa I3 Rework is installed according to Skechup design, it should be noted that it has a sufficient support strength with a 12 mm light surface slider instead of the PRUSA I3 Rework.
Step4: Install the Z-axis rail and the entire drive system
Similarly, the Z-axis of the MEGA Prusa I3 Rework is installed according to the Skechup design, and the red part connected to the slider is 3D printing.
3.DIY tutorial (below)
STEP5: Installing circuit for 3D printer
According to the schematic, the line, extruder, and power supply such as the 3D printer are installed.
Step6: Install 3D Print Heating Platform
First, we have to connect 4 small aluminum plates in one. Use 4 10W resistors to obtain 4.7 ohm's ramp D8 connector, each resistance has 2 screw holes fixed on the aluminum plate, and finally A complete heating platform with a size of 450x450x3mm.
Step7: Contrast Mega Prusa i3 Rework and Normal Prusa i3 Rework
There is contrast to have contrast, as shown in the figure below, the print platform of Mega Prusa I3 Rework is nearly 4 times higher than Normal Prusa I3 Rework.
Mega Prusa i3 Rework (left), Normal Prusa i3 Rework (right)
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Step8: Final Achievement
Different colors of lights, let Mega Prusa i3 Rework look more cool. Currently, Negrier has previously passed the entire production process to the INSTRUCTABLES website, including all necessary 3D print design files, and a complete list of materials. In addition, Negrier also summarizes many very good experiences for the construction of Mega Prusa i3 Rework. Reference.
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