First, I used a straight edge to align the top and bottom halves of the stab and tack glue the brass tube in the stab with thin CA (Figure 1). Then inserted the steel rod to align the assembly.


Figure 1


Second, I smeared a liberal amount of vaseline on the exposed portions of the steel rod (Figure 2).


Figure 2


Third, I filled in both sides of the brass tube with a mix of 30 min epoxy and milled fiberglass (Figure 3). Then pinned the stab to a flat sure and let it dry.


Figure 3