![]() ![]() #Openscad models downloadIf you're just interested in the exact OpenSCAD file itself, forward to the last step and download the final step file. It should be fairly simple to turn it in to a fully rounded box or add a few more non-rounded sides to it. Understanding the steps will probably help you to make your own custom design along the way. #Openscad models how toThis instructable shows you how to develop this box step by step. The OpenSCAD language is simple and concise, it took me half a day to get familiar with the basic concepts and another half day to turn our design into a fully parameterized model. So finally, we came to explore OpenSCAD, a free & open source tool which allows you create STL files for 3D printing and 3D models in general programmatically. #Openscad models fullWe initially used 123D for the creation of the STL files for 3D printing, but found this solution way to inflexible ( here's the full reasoning). However, keeping in mind that we are going to export this to an STL and then "slice" it so it can be built up by a 3D printer one layer at a time, it is better if we explicitly combine the shapes.At hybrislabs, we've explored IoT quite a lot and at some point our prototypes became so small and integrated, that we had the need to create custom boxes for these. This is OK because we are looking for a single solid piece. So far we haven't moved from the origin, so these two cylinders are rendered into exactly the same space. For the lip the size was somewhat arbitrary. I started with a simple cylinder that represents the solid part of the holder that fits into the base. Also, it needs to be deep enough to prevent the umbrella from moving around once it is installed. The piece then has to fit into the base, so that forms one outer diameter, but it also needs a wider lip to keep it from slipping too far inside the base. A chance to try out modeling skills and make something real! The piece has to hold the umbrella securely, so the pole forms an inner diameter. So I was almost happy to find that I lost a small plastic part needed to securely hold a patio umbrella in its base. Of course, this kind of thing is a lot more fun with a real example. Fortunately, the Edit-Compile-Test loop is very quick, since you can make a small change and immediately see results in the tool. OpenSCAD is feature-rich, so for new users like me, it is a little daunting. More complicated models use C-style blocks with curly braces to apply set transformations and groupings to objects. For example, a simple sphere: // radius=2, fragment angle=5, fragment size=0.1 Functions with parameters allow creation of 3D objects and "extrusion" of 2D outlines (applying a transformation to bring a 2D outline into three dimensions). OpenSCAD builds 3D models from a programming language description. Fortunately, there's OpenSCAD, a tool designed for programmers. Unfortunately, it's been 20 years since I did any substantial work in CAD. I spent a little time with SketchUp, but I'm a programmer, not an artist. Being restricted to models made by others feels more like observer status rather than a real participant. ![]() I was initially impressed with the wide array of models available from various sites, but that feeling wore off quickly. ![]() Like many others, I have recently acquired the hobby of maintaining and using a 3D printer (in my case from Printrbot). ![]()
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