Perhaps going a bit off topic but this halftone image was produced with the electromagnet although it could equally have been done with the laser by using the same GCode and for anyone old enough to remember them, the process sounds exactly like the old ASR33 Teletype’s although just slightly faster.
The GCode was produced with ‘DotG’ (
http://dotg.weebly.com/index.html) and the image pre-processed with ‘Infanview’ (
http://www.irfanview.com/) and the ‘Ximagic Gray Dither plugin’ (
http://www.ximagic.com/) – All of these being free to download and use programs.
Like all halftones you need to be some distance from the image to get the best effect and the end result, shown here, is far from being perfect. It does, however, look exactly like the image shown in Infanview so now I have to experiment with different settings and gain some practical experience to produce an image and a group of settings that I am satisfied with. The final object of this exercise being an acrylic, edge lit display which contains a photographic image as well as text.
So far so good.
Tweakie.