Board Thread:Questions and Answers/@comment-86.141.100.10-20130310154635/@comment-6294495-20130310202303

The Windmill treats items placed in a 9 x 9 x 7 area as obstructions. Said another way, blocks or items within 4 blocks to the side and top, and within 2 blocks below are counted as obstructions. Page was updated, thanks for pointing it out.