The idea is to modify the vertex k8400 3d printer with this frame and mount the existing extruder's and stepper motors on to it. The reason for doing so is:
- To be able to use E3D hotends.
- For use of flexible filaments. (that needs to pull, not push the material)
- Nozzle distance approximately 36 mm (standard approx. 23.7 mm).
- There should not be any big change in distance from the nozzles and the printing platform,
but pleas be careful so you don´t damage them. Always measure after you made any changes.
- The motors may be to heavy for high printing speeds.
- The printing area Will become smaller
Extra parts needed
- 2 x M3 25mm bolts and nuts.
- 2 x M3 washers.
For PTFE-tube holders
- 8 x M3 12mm bolts and nuts.
- 8 x M3 washers
For circuit board
- 4 x M2.5 15mm bolts and nuts.
- 4 x 5mm plastic distances.
- The design was created by measuring the existing parts of the printer, and carefully think of how to best solve the problem.
- The frame needed to be as small as possible to not remove to much printing area and at the same time be lightweight and sturdy.
- The stepper motors are placed in the middle which sets the center off mass right over the fastenings.
- The design was aimed to be easy to print and assembled by most people.
- Some extra parts of the existing printer were modeled just to get a feeling for the design before printing it.
The extruder is a remake of gribouille´s original design and the original can be found here:
Disassemble the nozzle(s) and the extruders.
Fasten the frame with the same screws.
Fasten the circuit board. I used 4 M2.5 19mm screws and 4 5mm plastic distance. The important part is to use screws with small heads so the screws dont get in the way for the stepper motors.
Fasten the "tube-holders". I used 4 M3 12mm bolts with washers and nuts. Then put the ptfe-tube in place.
Assemble your E3D hotends and let about 17mm of ptfe tube go outside of the unit.
Let the ptfe-tube slide in to the extruder-hole. Fasten the hotends.
Add the fans and connect everything up.
Adjust the height of the printer-plattform and add something to the sensor so the frame dont hit the walls.
Start with low speeds and test your way to the best settings.
- Learn how to design there own parts.
- Learn how to take an existing design/product and modify it to their needs.
- Learn the basic process of making a design/product.
- Learn to take materials, weight and design in account when to build/modify a product/design
- This project is aimed for older students that have some sort of experience of either modeling, product design, or a technical background.
- The students need to know a modeling program and how to make there own models. Or they need to be able to draw 3d sketches that can be modeled by the teacher.
- The grades could be based on the Idea, the design and the level of functionality.
- The students needs to have some sort of experience of either modeling, product design, or a technical background.
- The students need to know a modeling program and how to make there own models. Or they need to be able to draw 3d sketches or blueprints that can be modeled by the teacher.
- The students need to have access to a 3d printer and appropriate filaments.
- The students should have access to the images, documentation and models of this project as an example on how to improve a product.
- First the students need to find a design/product that they think can be improved.
- Then they need to document what needs to be done and think of how to best do it. They should consider any extra parts they need that cant be printed, at what cost and how easy are they to get.
- They should then visualize there improvements, either by drawings or by modeling. The sketches should be properly scaled and be easy to understand.
- When the final concept is done, they print there models and try to implement them on the existing designs/products.
- The students should provide a documentation similar to the one in the example project above.
- Last they explain there process and result for the rest of the class. They show there improvement and gets feedback from the other students.
At the end of this project the students should be able to show up a design/product that they have improved and have a better understanding of how to produce their own printable models.
They should also have a good understanding of the limits and possibility's a 3d printer gives them.
The grades could be based on the Idea, the design and the level of functionality, how well they implemented there modifications on the existing design/product.