The forth of the RIPs I have made and I think the most difficult to solve! And it was also the most difficult (time-consuming) to make. I love a few of the rotations in this one. I think these RIPs are fun to solve even when you know the solution! It seems to me that whenever I write about Andrews puzzles, I use far too many exclamation points!!!!!!!! This one is really good, enough said. Second wood in the description is the spline.
Ships Unassembled
Designer: Andrew Crowell