There’s a thread over in Fishing Chitchat about a knot testing machine. Based on information that Walt posted I built one myself. Other than the digital scale and winch that I bought off eBay for $38.00 everything else was in my garage. I can now feel vindicated for keeping all that junk. Anyway I highly recommend for all who tinker with their own tackle to build one of these. I haven’t tested any knots yet but I stretched some jigs with startling results. Wolverine triple wrap split rings started to fail at 140 though they’re rated over 200. Also some of my brazed rings failed due to insufficient solder. Flush with the ring is no good. About a 30%+ diameter of the brace seems to be the sweet spot. This is what I put together on a rainy day.