Meanwhile, on my old Inventor 2015, I had to download a plug-in called 'Mesh Analyzer for inventor'. Just google it. This tools gives you a model to work with, but it's all triangulated and you can t pick up edges etc.

I found it so annoying I dont bother changeing models anymore. On new 2017 version, I see now this is build in, and works better to some extend as in it recognizes the flat surfaces, meaning you can pick up eges etc.

Jan 31, 2016  By Clint Brown. Without the Mesh Enabler, STL files come into Inventor as mesh entities, which are not really much use to the user. You are unable to draw sketches on Mesh faces, or created 2D drawings of them, they are just graphical representations of geometry. Mesh Enabler​ will works with Inventor 2013, 2014 and 2015. May 27, 2014 - Trusted Members; 10; 8,107 posts; Inventor; 2015. Posted May 27, 2014. You will need to download and install the Autodesk Mesh Enabler to.

Still, circles are triangulated, so you can`t just pick it's centre. First thing i do is run them thru netfabb, some of the STLs you find online are not the best quality to say the least, Taking straight into inventor isnt possible although i believe there is a plugin called mesh enabler or similar. I then do 1 of 2 things • Import the stl into Sketch up and export as 3DS then import into Autocad ( 3DSIN) and export as a dwg. • Import into 3Dmax and export as a SAT file then into inventor repair environment and analise & heal errors The level of success is limited Often if its a simple part and refuses to convert to a solid i use the composite imported mesh or group of faces as a template to model a new part from scratch. Depending on the part complexity this can be time consuming but at least you have complete control. Id love to hear from other Inventor users who maybe would be willing to share their experiences in converting STL's.