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Message: [QUOTE="SpeedyManiac, post: 1172267, member: 19453"] Interesting. Pro/E isn't much better than Solidworks, and is worse in some cases. I haven't played with Cosmos (Solidworks' FEA program) or Algor (another solidworks FEA program) but I've heard good things. Personally, I find Pro/E is cumbersome for a lot of simple things, and only shines on extremely complex parts. As for your project, it looks pretty cool. One thing to watch out for is sharp corners and sudden changes in the cross-section of parts (like your crank) as these cause stress concentrations which can result in failure of the part. Also, why are you using two bolts on each side (4 total) for clamping the connecting rod? [/QUOTE]