I ordered some pieces by shapeways and I got this morning the black ones.

Has someone an idea and missed this things?

That's an odd collection of pieces there. Two of the pieces look identical to the Skewb corners for the inner shell of TomZ's Helicopter Skewb. Another two pieces look identical to pieces on Eitan's ETO. Perhaps you have pieces from more than one puzzle? I'd say you're looking at a Skewb + FTRD/ETO/HC.

I've had pieces to other people's orders in my prints before but never this many or this much variety.

I don't think Shapeways does adequate quality control. Issues like this have serious intellectual property implications. For the purposes of printing expensive toys it probably doesn't matter though.

These all appear to be from my Master FTO. They were not meant for me, I will try to work out whose they are.

Ah that's why I thought some of the pieces looked like they were similar to pieces from a Master Curvy Copter.

I placed an order for a Master FTO a few days ago. It was order number 124642, line item number #333717.

Perhaps they are mine

I'll chime in again when I get my order.