Doboz: Repstrap 3d printer made of Aluminium and plexiglass
Hello everyone ! Since this machine has just finished producing its first "offspring", i thought i would submit it here to commemorate.
This is my first generation "Repstrap" machine , on which i worked for many months.
- A repstrap is a derivative of a Reprap (open source 3d printer) , that is not created using 3d printed parts (sort of like "bootstraping" such a machine)
- as with most machines of this kind, it prints 3d object using thermoplastic filament that gets melted and extruded via the print head, depositing layer after layer
- The structure is made of L-Shaped aluminum : outer volume is 39*35*45 cm
- Total build volume ( maximum size of objects that can be printed inside of it) is 21*18*23 cms - I used a threaded rod approach for all axis of the cartesian bot (in hindsight, not the best idea, as low quality threaded rods make movement way too slow)
- Custom, low cost home made electronics to control all stepper motors , the print head heating , and the heated build platform (used to avoid warping in cooling objects)
- it also has a very limited 3d scanning ability, using a simple IR-Led/Photodiode combo , to generate 3d "height maps" of the objects in the machine .
- overall, a rather slow but rather reliable machine ( many 24/7 prints) It has already allowed me to experiment with different mechanical components, and has just finished printing its first offspring; a mini reprap!
The build process was spread out over about 8 months, with many prototypes, and experimentation, i had never worked on something this complex before, and even with the occasional tantrum etc, great experience :)
You can view more info and aspects of the build process on my site :http://www.kaosat.net/?tag=repstrap