Ooh! My turn! A while back, Zhewei posted a Reuleaux Minx
, and some of the pictures show the raw sanding-down. I asked him about it, and he said that it was a QJ minx that gave him that amount of solid plastic to work with, leaving only a bit of filling to do. For those who have both a QJ minx and a Meffert's minx, do you think that a Meffert's minx has a similar amount of plastic?
This seems a bit off topic (more building than naming and history which was the original topic) but here is a quick reply: If the QJ minx you speak of is what I have heard called the "PVC Minx" (and from that thread it looks to be) then you can find information on it in my Megaminx puzzle and mechanism comparison
thread. The Mefferts is actually completely solid without the small holes in the edge pieces that you see in his pictures.