Machine for 3D printing (and laser engraving).
Some members of the FabLab Santander have committed themselves to build the machines of the lab in a co-creation process. This machine is a cubic shape 3D printer with option of laser engraving. This side size of the cube is more or less 500mm. The purpose of the design is to get a big size open source 3D printer, nice-looking, easy to build, robust with metal profiles and standart bearings (not the linear ones...). The main design software is openscad which allow a natural integration in CVS or github software repositories. The design is parametrized as much as possible. The elements choosen for the first version are:
- RatRig profiles
- 627 bearings
- wood/plexiglass plates
- complex pieces are 3D printed
- the XY movement follow the "coreXY" scheme (see www.corexy.com)
Coding conventions for openscad files:
- try to comment every decision in the design
- try to use parameters for all dimensions such we have not to redesign when changing one piece dimension.
- minimize the number of parameters
- put the parameters at the beginning of the file with explicit names and comments
- then put the modules to be 3D printed (commented)
- then put the module called "ensemble" that gather all the pieces
- then put eventually cut views
- then put the modules