Autodesk Inventor

[#1]

I knew this is not a new problem, and I do search some people's solution. Even I followed up their way as

http://forums.autodesk.com/t5/Autodesk-Inventor/Surface-Models-Convert-to-Solids/m-p/3452492/highlig...)

, but still I cannot get correct solid model when I try to convert attached STEP model to IPT. I just can get surface model, but I do not solid one.

Could somebody help me to convert it to solid model (ipt)?

Your help will be much appreciated.

[#2]

There are many surfaces missing.
As this is simple geomtry - it might be fastest to simply redraw it using the original only for reference.

Why would you need it as a solid body - isn't this an off-the-shelf purchased item?

[#3]

looks like a lot of your holes thru the part need to be patched, you can either patch the surface hole and lose them in the solid, or you can draw a surface cylinder wetween each face where the holes occur...

Turning composite non transluccent might help you spot these problems

[#4]

Thanks lot for your suggestion.

Unfortunately, this 3D model is provided by vendor.

Looks like I have to use surface model.