Sadie, the blades are 2 3/8"x1 1/4" and the knife is 5 1/4" oa.
VMB, I have used JBWeld before. I built up a handle area on a few bows years ago and onetime many years ago repaired a V-8 marine engine when a numb-nut(not me

) tightened down a long head bolt in the hole for a short head bolt.

It worked very well in all those situations.