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How does that work?

Ah, I saw your post too late. I just placed an order for these earlier: http://www.amazon.com/dp/B00M4VNAPA

Edit: Nevermind, don't get what I got. "Estimated delivery date: Thursday, February 12,...

Here's an interesting set of couplers I just found: http://amazon.com/gp/product/B00P8WBRJS. They have both the split *and* set screws. I wonder how well they would work?

Don't get the couplers from MakerFarm. They have two screws which tighten or loosen a split through the coupler, which is how it clamps onto the motor shaft and the threaded rods. The problem is the...

One problem I had with the i3, was the Y axis rods would bend if I put feet on my printer only on the front and back panels. I have not had that problem with the i3v, so in that case it is more rigid.