This is a stunning piece. My fingers are a little raw from the wood. I would recommend using the wax liberally, don't be shy with it. I made an error somewhere and my butterfly doesn't flap, I know it was an error on my part, I can see where I messed up, but I can't take it all apart to correct it. Even without the flapping wings it's still a beautiful piece.
Right as I got to the end and was putting rubber band in place, I snapped the wood on the stand. I emailed the company and they are sending replacement parts to me.
I would recommend this to anyone who likes to build. I may gift one (or three) to friends in the future.