Is it possible that my drawing got corrupted in the cloud?

paul_kevill

Having created a scale model in Onshape last year and made a successful physical print of it, I was surprised to find on opening it again after about 8 months that it was full of errors. At first I thought I'd made a bad shell feature, which would propagate errors down the line, but after some nice tips in response to my question about shells, I found that other parts unrelated to the shell were full of errors too. There are sketches that have lost the plane they were drawn on, or lost all their external references, extrudes that have lost which faces to extrude, which faces or vertices to terminate at, what the merge scope is, and so on. Search for healthy moments finds none.

This is the state the history shows just before I created the STL.

https://cad.onshape.com/documents/5cf4898c7d0a78675574ac37/w/be9451398cece604d8079342/m/c5c02acb289fb5fc25d7f5b6/e/6c810e2ef7c37f60875b22cb?renderMode=0&uiState=698f5de57ed6f31420e5360f

To check I hadn't completely lost the plot, I re-imported the a couple of the STLs. The first one has errors but the shape is right. The other is as it should be, but the drawing as it is now would fail to produce it at all.

https://cad.onshape.com/documents/5cf4898c7d0a78675574ac37/w/be9451398cece604d8079342/e/3919d107048d9fa83afd4ad9?renderMode=0&uiState=698f5e897ed6f31420e53a31

https://cad.onshape.com/documents/5cf4898c7d0a78675574ac37/w/be9451398cece604d8079342/e/a603dac589b1c7d4bfc31932?renderMode=0&uiState=698f5ef57ed6f31420e5485f

What can have happened here? Have I dropped some enormous clanger or could there have been a corruption? I fear it looks a bit like what Freecad used to do before I stopped using it.

bryan_lagrange

Have you gone back in your history to the date of the last stable model. You can do that and hit restore to main.