I am not skilled at 3D modeling. At least not yet. Luckily for me, we live in an age where many people far more talented than myself are creating things and sharing them online. This is where we will begin with the Master Sword.
I started by searching for existing models of the sword that I could print. Preferably, these models will be free as well. I managed to find a really great model of the hilt by Thingiverse user flameblade. It doesn’t have a blade though.
Back to searching I went, and I was finding sword models with good blades, but the handles just didn’t strike me as much as flameblade’s. So let’s take the more difficult route and combine two things that I like: flameblade’s hilt with the blade from this model by Thingiverse user davidlikes.
I didn’t capture enough screenshots of this process. I’ll get better at it, I swear. To make a long story short, I took the full sword model into blender and deleted the hilt to get just the blade. I exported that as an STL, then took that and the hilt into 123D Design. Finally, I scaled both the blade and the hilt based on dimensions that I found online, and exported them as a single STL file.