Computer-controlled machining

To learn how to use a 'shopbot', the assignment was to make a piece of furniture using the OBS material wich is made of recycled wood.



We learned how to make our design depending of if the tool will go inside the traces or outsides, and also the tricks to make a 90° angle with a round tool. Thus we could make some join to assembly differents parts together (without glue or screws)



Then there's a lot of step to remember to get the machine working. Nothing really complex but we should not forget them. One of them was to put bridges between the parts and the board for them to not fly around.



After I cutted all the parts, I had to sand most of them. I did calculate the right width for a 90° joint, but I did not calculate the lenght for putting two parts inside one. So it seems that for the milling machine, 5+5=10.5 (probably due to compression and extension of the material, or humidity or anything else). So a good idea for the future is to always work with a little bit of margin everywhere so even if the parts are not perfectly joint together, it will always be more precise than a hand sanding.



This is the way it should look like after painting it. And then some detailed of the actual furniture.









Files here : dxf file.