computerized coiling control in which both pouring reel location and reel speed wobble pattern are preselected , whereby a moving product , such as bar , rod or wire , is continuously poured into a reel to form the densest product coils under a variety of coiling situations . a coiler operator presets independently adjustable parameters including coil o . d . and i . d ., reel speed wobble rate , and a reel speed wobble pattern selected from computer storage and having either a spiral , spiral with dwell , or triangular waveform . the computer is programmed to assimilate operator input data , and calculate reel motor speed reference and current reference signals for use by a reel motor controller which will form the densest coils having predetermined flat spirals stacked axially in alternate reverse - convolute layers . reel speed is modified to compensate coiler operation for effects due to variations in bar grade , temperature and / or shape .