[grownseed]

Fusion 360, which looks like is what is being used in the article, has a free license as long as you're a hobbyist or your business makes less than $100000. Fusion 360 has its quirks, but it remains my favourite tool for this type of work, and it's relatively simple to learn (though like any powerful tool it can also get pretty complex).

[benhoad]

yup, it's Fusion 360, I've got a background with SolidEdge and Autocad but Fusion is the best for quickly making decent parts with a 3d printer that need to be made-to-measure.