After a break of more than a decade, a couple of years ago I got back into creating math-based art I call “The Beauty of Math”. Some of it involves drawing Bézier curves on graph paper, like this one I did back in 1994 during my Freshman year of college:
Others are drawn with just a compass and a ruler, combining circles, arcs, and lines in interesting ways. I have now taken those skills and applied them to creating coloring pages like this one, all of which can be found in my DeviantArt gallery:
That brings me to LibreCAD. I still start all of my designs with pencil and compass, with lots of erasing, trying something new, and starting over, but then move to LibreCAD to make a clean digital version to share.
LibreCAD is an open source 2D CAD program for Windows, Android, and Apple. It somehow manages to be very powerful, but also lean enough to run easily on our Asus Transformer netbook (Coloring Page #4, pictured above, was made almost entirely on the Asus while at Bojangles one afternoon). While it’s no AutoCAD, it’s also not hundreds of dollars a year.
Even if you don’t have an engineering degree or any interest in engineering at all, as you can see in my coloring pages, LibreCAD can also be useful for various other arts – I even used it to design the cards for my forthcoming game Spellslingers.
The DXF files I made with LibreCAD are available to my Patrons. The exported SVGs are available to the public exclusively on Patreon, but only Patrons can access the DXFs.