I have chased this puzzle. I originally ordered it from Bits and Pieces, but they sent it to an old address that I haven't used in about 5 years. When I complained, I managed to get a voucher for the amount spent, but I really wanted the puzzle. One day on facebook Voltaire prime from TP told me this was available over at PuzzleMaster and I jumped at it. I lucked out and got it for a reasonable enough price. This was one in that box that I forgot I had ordered.
It's called, Knot Simple. I guess that means it should be considered a difficult puzzle. Mr. Prime warned me that it would be an easy one, and I really think this should be renamed, "knot hard". I brought it along for one of my testing dates and thought it would take me a while to disassemble and reassemble it. Not a chance. It literally fell apart in my hands. This puzzle is a great idea with a rather ungreat execution (much like any puzzle I make I'm sure). Putting it back together had me for a second. The bits are so loose it is easy to get it wrong. But, it's also very easy to see it's not right. So it was a very easy fix to open it back up again and reassemble it. Now this puzzle resides in a box of other rather heavy metal puzzles I have collected over the years. I'm glad I purchased it but at the same time, probably won't play with it again.
Nice puzzle-not so nice construction.