I started with a boolean cut to have a specific indent into my bottle. Now I’m trying to use the knife tool to connect vertices, but they either don’t connect, or they cut the other side of the bottle out.
I’m pretty sure it has to do with doubles from the boolean, but when I go to merge them, it compromises the specific shape I cut into the bottle, so I stopped attempting that.
What would be the best course of action? I’m totally stumped and can’t find any video with a solution.
Hm. Have you changed the file since you uploaded it? Because I have no problem with it at all after recalculating outside normals (I don’t usually flip unless there are just a couple bad faces because it all too easily flips something that was fine the other way; I select all and let Blender do the work).
I tend to do straight-forward knife cuts (especially when completing a loop cut) in ortho modes; here I used front ortho. Make sure cut-through is turned off (c).
Those options appear on the Status Bar – which is just out of my focus; I don’t know how many weeks I used Blender without even noticing there is always contextual information down there. It can even be scrolled (Knife has a lot of options)! I also read the manual for “fun” at times, even though most things don’t stick when I don’t have a specific context, I always learn something I didn’t know.
