It’s a figure 8 link, I open it up, put the hook in it, close the hook end, I then open the other end a little and sit it where the eye of the hook would go.
i used a file on the hook shaft area, was getting heavy flash, now it’s good.
i open the eye up after casting, powdercoat, slip the blade on, and then close the eye while powdercoat is still tacky, before curing, figure the powdercoat bonding with the eye might give it some more strength.