How Can You Make This A Solid?

[ThePieMonster]

I am trying to make this into a solid as it has missing faces from past work. You can see the red sections should be enclosed as well as the long orange section is open as well. 

I tried using the Stitch Tool but nothing happened.

[SBix26]

Please attach the file, and also tell us which version of Inventor you're using.

Sam B

Inventor Professional 2017.4
Vault Workgroup 2017.0.3
Windows 7 Enterprise 64-bit, SP1
Inventor Certified Professional

[JDMather]

Why does it have missing faces?

Has someone who doesn't understand the Delete Face command had access to the file?

Can you add Boundary Patch and Stitch?

[johnsonshiue]

Hi! It looks like the side faces are missing. Stitch as is won't help because there is a big gap and Stitch would not create the side faces out of blue. Like JD mentioned, you can create surfaces to cover the gap. There are a few choices. For this case, you can use Boundary Patch or Loft. Or, you can use Ruled Surface or simply create a sketch outline and extrude as surface. Then stitch them together.

Many thanks!