String ties still leave a lump where the knot is but it is less rigid, more rounded and has less tendency to snag. Cut ends of string offer no hazard to contacting body parts. One roll of string can handle ANY bundle tying situation ranging from a few 22AWG wires to a fist full of wires. Further, polyester flat-lace has excellent longevity characteristics under the cowl while nylon tye-wraps fall victim to ozone, hydrocarbons and ordinary embrittlememt due to lost of plasticizers.

String ties do take more time and some skill. I like to build a new wire bundle using the cheapest tye-wraps I can buy . . . every time a new wire goes into the bundle, tye-wraps go around it to keep the wire in place. Old tye-wraps are clipped off after they become covered with a few new wires. When the bundle is finished, you can put string ties on and clip ALL of the tye-wraps off.

If you're interested in considering this very old but venerable technology for forming wire bundles, an exemplar product can be viewed and purchased on Wicks Aircraft website by clicking here. The lacing tape I've suggested has a wax finish. This wax is just slick enough to let the tape strands slide over each other for uniform tightening and just sticky enough to keep the first tensioning of a knot snug while you throw another knot on top.

Here are some tips on how to use the stuff: