I know I lamented 3Dstudio as 'inaccurate' for years. I think anyone 'mechanically' minded will find working in 3DCAD a dream, while workin in Rhino, 3dStudio, Truespace, Etc. When I first discovered 3DCAD as opposed to 3D NURBS modeling, it was like a revelation to me. The standard MCAD\3DCAD feature tree, etc, is very nice. If I had to purchase software for a commercial operation, and the equipment being controlled was DIY type stuff, even good DIY, I would def. Rhino is NURBS, it dosent have the built in dimensional ridigity of parametric modeling(dimensioned vectors, like in CAD, as opposed to splines in space. This is basically true, but the main difference is really parametric versus nurbs modeling. Someone else mentioend that rhino is good for surfaces, alibre good for solids. Rhino and Alibre are so drastically different it is strange to see them competing directly with one another for a purchase decision. That is enough reason for me to pass it up. None of these is fun as legos(like Solidworks is). Ive used inventor, alibre, proE, catia, and mechanical desktop. it is very difficult to claim there is a better solution for midrange 3DCAD. hwoever, the cost/benefit ratio is probably close. Whoever said alibre is as good as solidworks. They'll have to buy one and ~make~ it work - all the while wondering about the other options they weren't offered. It's too expensive and too time-consuming. But I'm not about to buy five packages, test them all for a year, then make a recommendation. There are supporters of every CAD/CAM package available (just read these forums), but truth be told, in blind taste tests, there has to be an all-around best package from among them. Right now, all you can do is gamble and buy one. Odds are that if that was allowed, informed decisions would be made and a few of the really big players would be eliminated. I've seen cracked versions of some big ones on sale on warez sites for under fifty bucks! You're right about everything being cracked! But if I had to guess, I'd say that with just a small handful of similar products being offered to machinists, it probably pays to NOT let them test drive each one. Maybe the lack of cooperation in offering demo's is why people want cracked versions. If it's the latter, it's a loosing battle. I'm not sure if the hesitation to offer demo's is because they are not confident about their product, or if they are worried about getting cracked.
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