Alright, firstly, forgive me if this is the wrong place for this.
In blender whenever I (yes, I’m a newb!) cant figure out how to do something with just one object, and decide to use 2 modified objects to get the trick done, I always gotta spend a lot of time zooming wayyyy in and trying to get the edges/faces of them to meet PERFECTLY.
So, my question is… is there some way to snap two objects together? For instance I have a rectangle and half a sphere (well, actually sphere cut in half, horizontally and then again vertically… basically a umm… half circle… eh… just look at the picture.)
Sooo… is there anyway I can snap the two flat sides of the objects together without going through all my newb troubles of zooming and moving, repeat repeat repeat ?
Another way you can do it is to move the two objects as close together as you can, then join the two objects into one object ( CNTRL + J - in Object Mode with both selected), go into edit mode and box select (B) the two verticies you want joined and merge them (ALT + M). You’ll probably have to zoom in a little bit, but this should be way easier than trying to line it up exactly perfect :D.
Also, if you can get the vertices pretty close to each other, it doesn’t even have to be exact, you can select ALL of the vertices you want and use the ‘merge doubles’ tool. This takes any vertices within a certain threshhold that you specify and merges them together. If you can get the corresponding vertices all in range of each other at once then you can merge the two sections in just one click.
If the two faces you are trying to join are parallel to each other, I have a method you might try.
[1] In object mode, rightclick select the D shape on the right. Enter edit mode with tab key. Hit AKey until no vertices are selected. On the face you want to snap to the other object, select one of the four vertices. Shift-SKey to bring up the snap menu, select cursor->selection. The 3D cursor should move to the vertex.
[2] Hit tab key to enter object mode. Move cursor into button area and hit F9 to enter Editing context. In the Mesh pane, click the button Centre Cursor. The pink object center should snap to the cursor.
[3] Rightclick select the rectangle shape on the left. Repeat step [1], that is: Enter edit mode with tab key. Hit AKey until no vertices are selected. On the face you want to snap to the other object, select the vertex that corresponds to vertex you selected on the D shape. Shift-SKey to bring up the snap menu, select cursor->selection. The 3D cursor should move to the vertex.
[4] Hit tab key to enter object mode. Rightclick select the D shape. Make sure that the 3D cursor is still on the correct vertex on the rectangle shape. Shift-SKey to bring up the snap menu, select selection->cursor. The D shape should snap to the rectangle so that the two faces are flat on each other.
[5] With the D shape still selected, Shift rightclick on the rectangle so that both objects are selected. Ctrl-JKey to join the two objects into one.
[6] Hit tab key to enter edit mode. Hit AKey until all vertices are selected. In the F9 editing context, in the pane Mesh Tools, click the button Rem Doubles. A message should appear “Removed 4”.
Select a vertex and press N. This brings up a panel that shows the 3D coordinates… can be useful. You can also select 2 verticies and press f to create an edge between them. Selecting 3 or 4 allows you to make tris and quads.