Erase part of mesh beyond intersection I am trying to make a simple coffee (I'm a beginner but not using any tutorials, I like to explore things on my own), here's what I've got:


What I want to do now is erase the part of the torus mesh that is inside the cup, I tried joining the cylinder and torus but that didn't help much (Why would it help anyways). How can I delete that unwanted part? B-Selecting/Deleting vertices isn't very efficient and easy to work with.
Know all the mesh selection tools.

In your case the Lasso or Circle Select tool could help.



Other mentionworthy tools:

Expand Selection - &#9096; CtrlNumpad+
Reduce Selection - &#9096; CtrlNumpad-
Select Edge Loop - &#9095; Alt RMB

You could also use a boolean modifier.

Select the torus and apply a boolean modifier with the cup as Object and the Method to Difference. Apply the modifier. Now you can use the Select Linked Tool L to delete the unneeded vertices.