Re Booleans : I used to have big difficulties with Booleans. But now I think I have cracked it.
I’ll show you examples with simple objects - you should be able to follow along with your more complex meshes :
Red Cube & Green Cylinder - Seperate Meshes.
Objects modelled individually - Red Cube & Green Cylinder.
Position the objects in the correct positions
SELECTION ORDER CAN BE IMPORTANT FOR SOME OPERATIONS.
I tend to select the object that is being cut first, then the “cutter”.
So in Object mode, select the Red Cube first, then hold shift , and select the Green Cylinder.
Next select Boolean Operations from the object menu, then the particular type of Boolean required.
Now this is the part that confuses most people.
Boolean Operations creates a NEW object at the same location as the 2 chosen objects. The problem is that Blender makes no indication of this - and it’s often quite easy to assume that nothing has happened.
So what you need to do is straightaway after hitting your chosen Boolean operation, press (G) to Grab and just move the existing selection out of the way. What you are doing here is moving the original “cutter” mesh and the original mesh being cut out of the way: .
TA-DAAAAAA - you are left with the resultant Boolean Mesh. Easy Eh ?
Now all there is to do is to delete the original meshes.
All of the Boolean Operations work in the same way :
UNION - the resultant mesh is a single mesh copy of the originals.
Difference - the resultant mesh is the difference between the meshes :
Does that help in any way ?
I know that Booleans can be problematic. Try doing the above with smoothed objects - not really brilliant.
Sometimes faces get lost somehow, don’t ask me why I don’t know but it’s worth doing a quick render to check.