You can make them as composites that have some dummy brick in the corners to set the ratio when creating them, and then remove the dummy bricks from composite by shift+clicking then and clicking on unvonted parts.
@thalamic: Wow, dear Master! Your words are like a spring rain to me, you know I appreciate them so much. I'm so flattered by such super-positive comments. Thank you again!
@Awwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww Wwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww (lvqille)
Thanks. Much appreciated. ;¬)
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