The Shed – September-October 2019

After cutting two copies of the same
image I inverted the pieces and got a
good result.
Here’s the process:

1. Convert the image to duotone (black
   and white only) and simplify the
   image using Inkscape’s Trace Bitmap
   function.


2. Export the vector drawing in DXF
   format for the laser.


3. Decide what and how many colours
   are to be used.


4. Separate the design components
   depending on the number of colours
   to avoid cutting the same replica of the
   entire image for every colour sheet.
   5. Cut the Perspex pieces.
   6. Face up-down the pieces to recreate
   the design.
   7. Glue a support to the back with some
   vinylic (robust paper, cardboard, etc.).

Perfect for some artwork

We can create coloured graphic puzzle-

like surfaces using this process. As

the images need to be simple without

small pieces it is perfect for logos and

graphic brands.

Starting from a not-so-original colour

photograph, I have made a good two-

colour logo that I plan to use as the

Art-a-Tronic robotic project logo.

In this monochrome, minimalistic version of the drawing, some internal cut pieces have been used to mask the paper before spray painting the
entire surface, creating a metallic shadowed effect. Then, the painted plastic frame has been glued on the paper revealing the tracks of the
engraved drawing and the coloured, non-masked areas.

The parts are glued together on the support leaving the glue (which can also be coloured) visible along the lines

All processes described

in this article have

been achieved with a

cheap DIY laser cutter

and engraver, some

coloured acrylic sheet,

and drawing materials,

for less than $20

I cut copies of the same drawing

on different coloured sheets as an

experiment. Using a robust white f