Subtraction

Subtraction - Week 3: CAD CAM and CNC Skill builder

PREVIOUS POSTS:

WEEK 1: ROUTER SKILL BUILDER

WEEK 2: OTHERMILL SKILL BUILDER

TITLE: CAD, CAM and CNC Skill Builder

DATE: Feb 10th, 2017

INSTRUCTORS: Ben Light

 

INTRO

This week, I combined my homemade hardware assignment with subtraction skill builder, to make an interactive marquee letter E, which is still in progress.

In subtraction skill builder, I decided to make the shield of the letter, which needed to contour the outline and two holes for wires,  and pocket the E part.

Before drawing the blueprint of my shield, I tried vectorwork first.

For 2.5D design, the pros are: 

  1. It's powerful to draw accurately. 
  2. easy to draw polygons and lines.
  3. easy to combine shapes to make new shapes.
  4. has navi window to show data and positions.
  5. can load images, so that we can do tracing.
  6. has free student version.

The cons are:

  1. no tool to draw free curves or curves control tools. 
  2. can't load both Ai and SVG file. 
  3. it's hard to align and distribute shape with the shapes inside it.
     

THE PROCESS

Anyway, at the end, I used vectorwork to finish the outline of my shield.
Because the shield was supposed to fit the circuit board I made in othermill, I did measurement first.

 

THE FINAL

SOME THOUGHTS AND PROBLEMS

1. The setting on CAM needs time, CNC cutting doesn't need that much time. So before jumping to CAM, one can design how to set the contour and pocket first to save the time on CAM.

2. I'm thinking about how to make jigs for cutting both sides of one piece of wood. I saw Sebastian's work with CNC, which is awesome. He said he used 3D print to make the jig. I'm thinking about make we can leave some bleeding parts so it can hold the piece without a jig.

3. Poor quality plywood may have some damaged part after pocket.

4. New spoil board is awesoooooome.

5. I started to collect inspirations for CNC works on Pinterest, here is the link:

https://www.pinterest.com/bunkiri/cnc-is-awesome/