For laying in the hinge wires which are free formed to fit the bait. I put one side of a section on a sponge then position a hinge wire where I want it to be and using the edge of a 16 penny nail press down hard on the hinge wire and rub back and forth along the wire. this will leave a print of the wire on the pvc. I then use the dremel with a small bit to deepen the groove about half the thickness of the wire and its wraps If you make this groove to deep, you will not be able to get an impression on the other half. After doing this, I put a couple drops of super glue on the wire to hold it in place. Next place the other half of the segment on top of the first. Line up all the edges and press down firmly and you will get an impression for the other side. Again, do the same to this side with the dremel. Place it back on the first half and if you made your grooves deep enough the bait halves should fit nicely together with no gaps between them.