08_COMPUTER-CONTROLLED MACHINING

josefinaPETRINI

_MAKE SOMETHING BIG

Living in Barcelona with four other people requires a lot of storage space and extra sitting space for visits. So the idea was making something that could work out for different functionalities and try to maximize the use of the board by doing the least number of cuts.

For the MAKE SOMETHING BIG assignament required:

  • Getting started with the Shopbot CNC Router.
  • Using either Plywood or OSB (Strand board). I chose OSB wood: 2.5m x 1.25m.
  • Learning how to design on a new software: in this case SolidWorks.
    •     Assembled parts in SolidWorks.   Following the premise of doing the least cuts possible was only useful for the design but not for the cutting as the 6mm drill path runs on a inner line, so anyway I would have two lines.   When the archive was ready I took the following steps:
  • Open it in Rhino4 and setted one layer with holes, for fixing the two boards with screws, another layer with the inside pieces to be cutted first and a final third layer with the outlines with tabs for the pieces to be fixed while being cut.
  • Set the x,y,z, drill the holes and fixing the board.
  • Send the Gcode from Rhino to the ShopBot.

    •        

    As OSB is made by compressed pieces of wood, a 10000 speed value is fine. I first tried 12000 and the wood was breaking easily. Before sending the code, make sure that the outlines are correct, otherwise this is the result:

     

    The space I left for the pieces to fit was 0.2mm but it still needed some sanding for them to fit perfectly.

     

    After the assembly

     

    Seat/Storage

     

    FILES

  • .dxf file for seat.
  • .SLDASM Assembly file in SolidWorks.

  • 50 Digital Wood Joints: this is a very useful open design source for joinning wood pieces.