Other scroll wrenches may put a round rod inside a round tube or or a round rod inside a square tube and this is a clear design mistake. The thread-bolt-handle of such a design will not hold the rod inside at the correct vertical angle necessary.
Another one piece forging I can't get the challenge out of my head. Used the old blacksmith split cross trick on this one. Start stock was of square. I have to try a full size one but I'm going to need a bigger forge. by phyreforge