I'm torn between another 3d-printer and an iPad Pro. My robo is pissing me off royally, but on my budget there's no promise another machine would be any better. I tried out a demo iPad Pro today and was very impressed with 3d modeling with the apple pencil. It's different from what I'm used to, and won't replace my laptop, but it's definitely appealing. It would be nice to bring something with a full day of battery life around campus instead of my laptop too. What would sell me on this the ability to quickly sketch up some 3d models. My question: Has anyone ever used an iPad Pro and Apple Pencil for cad work before.