I had a small breakage during the build. Makes no sense that this part broke given there was a nut trap try to spread stress, but it broke anyway. E3D kindly offered to send a replacement with my next order and, as it wasn't a load bearing part, just carry on without it. So my dump bucket hangs by a single bracket. Then I thought, why not just print one ! That turned out to be not so simple, as the drawings for the acrylic laser cuts are larger than reality and presumably scaled automatically based on the part which is being cut. Whatever, there's a reduction factor. I've been trying to get to the reduction factor. Following these two, I have another printing which I think will be hopefully right on the mark. So, for anyone else doing this, you need to scale the dxf drawings by: 0.0387666459346046 I hope to post images of a fitted replacement soon.