EII-Mantodea 3D Printer

History

3D Printer Aluminum and PLA.


Although there is already, a version designed entirely in Aluminum, assembled we have only done it in the PLA version.


I have designed this printer for the School of Engineers of the University of Valladolid, for the department of Models and Models.


 It is a project currently underway, so some details are still to be finalized, such as the box with the electronics.


  The uploaded parts make up the base printer for a bowden. The version with the lower box, I will wait to have it physically done to upload it.


  Likewise different types of extruder or bowden supports will be uploaded later.


  The parts have been designed to be printed except for a few that are part of the structure. These are the bracket for the extruder, the carriage plate, the bracket,

the side plate and the extruder quick-change bracket, which are made of 5mm aluminum plate.

  The printer has a 300x300 bed and has a possible printing area (Hot movement) of X=330, y =430 and z =300.


  It has 8mm trapezoidal spindles, although we are studying in the final version to use 10mm spindles and 2mm pitch.   It is made entirely in V-slot profiles, 20x40 and 40x40®.


  The profiles are positioned and combined in a way that gives the printer absolute stability and rigidity. The number of printed parts is very small and therefore assembly is very simple. The All Metal version has all the printed parts made of folded sheet metal.


 The box with the electronics is located in the lower part under the Y carriage, serving as a reinforcement structure to the machine structure itself.


As you can see it is an improved Prusa made of aluminum profiles. Specifically by means of V-Slot profiles.


We have also eliminated the most critical points by removing the guides, the bushings and the sheet metal structure. The design is similar to Una Anet, but with design improvements.

Advantages of this project

 - Light and elegant line.


 - The cost of the structure is about 60€ including the bed base.


 -It has much more robustness than an Anet or a Tevo, due to the better position of the profiles and the use of a 40x40 perifl.


  -It is much lighter than the Black- Window, although it is just as robust.


 - All elements are easily accessible, for maintenance and adjustment.


  - The electronics are integrated in the printer, not in a separate box. The electronics are underneath, to increase stability.


  - It has a quick change on the X carriage, so it will allow a quick change of Hot or place double strippers on the carriage at any time. We can use the stripper on or off the carriage.


  - The position of the screws holding the bed is fixed at the bottom. They are threaded to the bed support. This allows the bed to be removed quickly, as neither the springs nor the screws will fall out.


  - It is on V-wheels, so it is silent. But the carriages are supported on a profile width of 40mm, so the robustness to torque is much greater than with the wheels spaced 20mm apart.


  - The X-Axis, goes inside the frame, not protruding, so the printer is sleeker and slimmer, with no protruding parts.


  -All profiles used are 500mm cuts. This makes it easier to order the peripherals, and saves costs by buying 1500mm sections.

Chassis Materials

Costs:


      4 Profiles 20x40 500mm (one of them cut to 480mm) 22.64€ ( http://openbuildspartstore.com/v-slot-20x40-linear-rail/)


      1 Profile 40x40 500mm 10.13 € (http://openbuildspartstore.com/c-beam-linear-rail/)


       12 V Wheel ™ 7,62€ at alliexpress


        4 V-Slot 6mm spacers ™ 2,42€ (http://openbuildspartstore.com/aluminum-spacers-10-pack/)


        4 V-Slot eccentric spacers £2 at alliexpres


        T-nuts 4€ 4


        2 corner connectors 3,22€ http://openbuildspartstore.com/inside-hidden-corner-bracket/

In total the structure comes out for 54€, to which must be added the hardware and aluminum coupling plates, trolley plate and the base of the bed. These parts can be made by laser cutting or manually cutting 5mm aluminum plate with a jigsaw.

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