I used the hammer crimp tool as well, it works pretty good, maybe not as pretty as the fancy crimper, but once you apply the adhesive filled heat shrink tubing, its a bulletproof connection. Count on spending a good deal of time making up the cables, I forget how much time I spent but it was like 30 minutes to make up 2 ends of a cable by the time you cut it to length (I had a large enough wire cutter), strip the insulation, crimp, heat shrink and insert the lugs into the connectors. And as Norm Abrams says, "measure twice, cut once!".