I have recently been told that knotting your ends and then using a crimp cover is better than crimping. Is this true? If so, what kind of stringing material is best? I currently use Accu-Flex® professional-quality beading wire.
You can finish your designs with a knot or a crimp bead depending on the stringing material. Crimp covers and bead tips are used to finish the ends by camouflaging the method you choose.
Stringing jewelry on thread, cord or Accu-Flex® beading wire then knotting the ends and using a bead tip to secure the material to your finding is certainly a good, traditional way to finish the ends of a strung design. Using this technique and either thread or cording also allows you to knot between beads, ensuring that if your piece breaks, you won't lose beads.
The benefits of using Accu-Flex include flexibility, strength, variety of colors and the ability to knot, if that is what your design calls for.
If you use knots to connect the beading wire to your finding, add a drop of G-S Hypo Cement to the knot before placing a crimp cover or bead tip over the knot for added security.