Computer-Controlled Machining

1. Concept

Several I promise to my wife I would do a toilet cabinet. And I find a cool design on opendesk.

So I would design my own toilet cabinet according to Joni Steiner, Nick Ierodiaconou's design.

2. Machine and material

2.1 machine

I would use shopbot PRSalpha CNC to process my design.

The following is the basic parameter of the machine

2.2 Cutter

There are 3 kinds of end cutter for milling. I choice flat one.

The following picture show the detail information of end cutter,I use 52-910 end cutter and the diameter is 6.3mm

2.3 material

There are many different kinds of material in CNC.The following is some example

  • machinable Wax (reusable) Polystyrene Rigid Insulation Foam
  • Veneer Plywood
  • Medium Density Fiberboard (MDF)
  • Medium Density Overlay (MDO) High Density Polyethilene boards (HDPE)
  • Oriented Strand Board (OSB) Polycarbonate
  • Aluminium

In my project,I choice 1200 x2200x11 mm plywood to process my design.

3. Design

The following is some points we need to consider

  • The thickness of plywood is 11mm, so I design the hole 11mm.
  • The cutter has diameter, so it can't make 90 degree corner.

So we make a circuit at this corner as the following picture.

I design it in fusion 360 and following is the result of the design in Fusion 360

Then I output 2D drawing in AutoCAD , reference the detail in laser cutter:4.4 Press-fit construction kit(parameter design)

I relocation the model as the following

5. Machine software

The following is the guide in software

6. Processing

Before processing, We need to do the following step

6.1 Put material

Load plywood(1220x2440x11mm) and then use screw to fix on the platform

6.2 CHECK the home position

Click button to home position

6.3 Change cutter

This detail show in the following video

6.4 Open vacuum cleaner

Click green button to start it and red button to stop it

6.5 Spindle

click the Green button to start the spindle, and Vcarve to change the speed.

The following is the video about processing by shopbot

7. Assemble

After get all the material ,we use hammer to assemble them.

The result is the following picture.

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