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8. Computer controlled machining

Instruction

group assignment

individual assignment

  • make (design+mill+assemble) something big (~meter-scale)
  • extra credit: don’t use fasteners or glue
  • extra credit: include curved surfaces

What I week this week

  • Learn how to use machine safely and test runout, alignment, fixturing, speeds, feeds, materials, and toolpaths for your machine → Group Assignment Page
  • Ideate and design something big → in this page
  • Milling by CNC machine → in this page
  • Varnish and assemble → in this page

Ideate and design something big

What I want to make : Just-Fit and Nesting Storage Concept

As Japanese house in Tokyo is generally small, many residents would like to and need to store livingwares orderly making the most of a small space. There are numerous kinds of storage box for storing things orderly in a house. For instance, Muji is famous.

muji.jpeg

However, in my opinion all of storage boxes have the problem:

  • being bulky when not in use
  • not just-fit to some corners

The making opportunity in this week is excellent timing to make just-fit to my house and nestable when not in use. Specifically, a storage at my kitchen is not fittable to the line so I decided to make just-fit and nestable storage boxes.

Moreover, I would like to challenge to make without using fasteners or glue

kitchen.jpg

Design sketch

take measurement of the space

sizing.png

Design in Fusion 360

finalized model

modeling_box.png

nesting version

modeling_box2.png

Designing Process

  • sketch the left-side shape

    1_sketch.png

  • extrude top and bottom board

    2_extrude.png

  • extrude side board

    3_boxes.png

  • making inner tabs between top and side board

    4_inner tabs.png

  • making tabs between prop and boxes

    5_prop_tabs.png

  • combine parts and cut off pockets projecting shape of tabs

    6_combine.png

  • create props

    7_prop.png

  • fillet the edge of prop to curved surfacing

    8_fillet.png

  • create boards which size is 1820 x 910 to lay out each parts

    9_layout.png

  • joint to the boards one by one

    10_joint.png

  • Making dogbones by using add-on of Nifty Dogbone for Autodesk® Fusion 360™

    11_dogbone.png

  • Done.

Reference : Fusion 360: Bookshelf Tutorial - Part 1

Move to Hamamatsu city where is 250km away from my lab

As Fablab Kannai I participate in dont have large CNC router, we asked another lab to lend it : Fablab Hamamatsu TAKE-SPACE where is about 250km away from our lab.

About Fablab Hamamatsu

  • is located in Hamamatsu citywhich has some headquaters of global manufacturing company such as YAMAHA, SUZUKI, Roland.
  • the list of facility is here
  • Lab owner Take-san is in Bhutan in order to make something..
  • huge cactus is infront of lab somehow

    cactus.jpg

  • famous words which all makers will empathize with is on the wall

    wall word.jpg

CNC Router and software I used

  • CNC router : ZN1325

    CNCmachine.jpg

  • Tool path maker : Vectric Cut2D Pro

  • G-code sender :Mach3

Prepare for CNC machining : procure materials

  • Choose the material in Cainz which is popular DIY store in Japan

    cainz.jpeg

  • There are variety of wooden materials such as OSB, MDF, lumber-core plywood, Pine laminated wood, and so on

    shopping.jpg

  • Structual Larch plywood seems to be adecuate as price is good and it has beautiful wood grain.

    carrying.jpg

  • Material Information

    • material: Structural Larch Plywood
    • size: 1820mm x 910 mm x 2sets
    • thickness : 12mm
    • price : 18 USD per one
  • measure actual thickness : 11.95mm

    scaling.jpg

Milling by CNC machine

Operating process in details refer to Group Assignment page

  • milling one parts for a test. create inside holes first and outside line secondly.

    testpart.jpg

  • after confirming that it was cut with no problem, milling the other parts and vacuuming is performed after cutting completely in accordance with lab policy. (it is x8 speed movie)

    milling.gif

  • milling completely

    milled_board.jpeg

Varnish and assemble

  • filing and polish all parts

    filing.jpg

  • Assemble test

    fin2.gif

    assembletest.jpg

  • Varnish over the wooden parts

    wax.jpeg

    varnish.jpeg

  • dry at my own very tiny private fablab in the balcony

    varnish2.jpeg

  • Finalize assembing

    finalize1.jpeg

  • transform to nesting version

    finalize2.jpeg

  • set up furniture at the place where I planned to be. Just-fit at the corner :)

    setposition.jpeg

  • 3d scaned by scaniverse

What I learned in this week

Individual and Group Assignment

  • Making something big may be dangerous so nothing is the more important than safety.
  • Parametric design is very important and useful. Setting parameter beforehand in Fusion360 enable me to make and mill smoothly.
  • I understood how to use CNC machine safely
  • Being able to make my own furniture which is just-fit for my house makes my life quite better.

Acknowledgement

Mr.Tamiya and Ms.Kamei as supportive instructors in Fablab Kannai

Shopbot tools who made the Youtube tutorial video of Fusion 360: Bookshelf Tutorial

and You!

File I used

fusion cloud

kitchen_box.f3d


Last update: June 3, 2022