How do I join these 2 parts. I am missing something and I feel dumb right now.

carlos_berdeal

https://cad.onshape.com/documents/9dcc286d549d2823289a216e/w/9753cb472039baafb14bfce7/e/9120c1cfe5af7f5fa7880418

I am missing something! Please send help!

lana

You don't have two parts here, you have a part and a surface. One way to get what you want is to delete the top face before the Fill , another - is to do replace face after 

carlos_berdeal

@lana Thank you so much!

robert_scott_jr_

Hello Carlos. I VERY seldom work with surfaces but I think the problem is that you can't join a surface and a part (solid).. I got around this by thickening the surface by .05mm thus making it a solid and using Add within the Thicken dialog box, I added it to part 1. Below is a link to more information on converting surfaces to solids. - Scotty

https://www.onshape.com/en/resource-center/tech-tips/tech-tip-converting-surfaces-to-solids