I happen to have a naked speech synth board that used to be mated to a now defunct Rave Speech card, and I wanted to create an enclosure for it and 3D print it.
While I have printed many objects before, they were all designs I downloaded from Thingiverse and I had no experience with 3D design.
After some research, I decided to avoid the classic CAD programs which use the mouse to draw the design on the screen because I felt that they lacked flexibility when it came to making changes and that the mouse was not a great precision device to start with. I ended up settling on OpenScad, an open source CAD program with parametric input, i.e. you do not draw anything by hand, but rather describe your object by adding and subtracting geometric shapes using a very simple scripting language.
Here's my first try at the speech synth enclosure. There is the enclosure itself with 2 corner posts for the screws and one larger central one for support and 2 openings for the connectors. The lid was designed separately and simply press fits on top of the enclosure. Everything is angular for the moment for ease of design. The final dimensions are smaller than the original speech synth case. There is a lot of empty space in the case, and I suppose I could create a tight fitting slim enclosure with external feet to support it, and that might be the next iteration.
In the images below, the parametric code is in the left pane, and the 3D rendering is in the right one. Also attached are the STL files if anyone wants to print them. I will be printing them myself later this week once I receive my new printer. My old one is a first generation printer made of plywood and zip ties (no joke!) and it's becoming quite flaky...
Printrbot.jpg 952.8KB 5 downloads
Speech synthesizer enclosure 1.jpg 244.62KB 5 downloads
Speech synthesizer 2.jpg 211.25KB 5 downloads
Speech synthesizer lid.jpg 153.78KB 5 downloads