The pictures below ilustrate the press-fit kit design and build process. And then, I had to delete repeted lines and make them continuous, on LaserCAD. To make the sketch to generate the dxf file to be exported I used the "Include 3D Geometry" Fusion feature. I also designed three bars, varying the thickness dimension, but it was so thin to be cutted in the laser. I designed eight types of joints, by varying the profile, the chamfer and the end stop. During the fabrication I noticed that I had to change the sequence of layers to raster and cut holes, and than cut the profile. To solve this issue we open the dxf file on Inkscape, and save it again with the same extention.Īfter being familiar with the machine and knowing the right dimensions to get a good press-fit joint, I design my own press-fit kit (in a parametric way, on Fusion 360), and repeated the process to fabricate it. We had problems oppening dfx file generated by PTC Creo, and no troubles with the dxf files generated by Fusion 360. Then, we just had to export the files with dxf extention to open on LaserCAD. We found taht the combination (50, 50) was the good enouth for our material. the minimum power requested to cut that cardboard thickness. We noticed thar the orientation of the cardboard has a huge influence on the part structure.īefore start cutting, Vitor Marchi, the Ryzos lab manager, explained us about the leaser bean, how to use the control panel of the machine and how to adjust the correct nozzle height.īefore use our models, we did a test to identify the best machine settings (speed, power), i.e. We did two types tests, as shown on the images below. We started by doing the some drawings to test laser settings and the best mesures for a good press-fit joint with cardboard. Modify > Our group working on Rhyzos space.
For this year they are planning to start a K12 school from scratch. Rhyzos is a makerspace that develop educational methods to K12 and train teachers to work with maker education. This week we had to come to other maker space nearby, called Rhyzos, because our laser cutter is broken. Log 2017 02 10 Making lasercutter test parts in group You can find all files used in this class in the Fab Academy repository in the button below or a backup in this Google Drive folder.
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