I am gonna guess this is the right board section for this. I wanted to make some guns for my Arcee WIP so I got on poser and played with some primitives for shapeways conversion. Mind you I have no way of scaling it (for the mechtech pegs and so on) So right now this is a WIP as well. Any feed back would be greatly appreciated as well as thoughts!
That's pretty good for just working with primitives. If you want to model for Shapeways you'll at least need the ability to measure and scale. I haven't touched Poser in at least 10 years so I don't know what it has to offer, but I don't think it has full modeling tools which are a must. I started 3D modeling much like this though and it is a good way to get started. Looking forward to more!