Imho a drill or power screwdriver fitted with an adjustable slip clutch is the
way to go. A proper winder built with steppers (as shown in CC but also as
proposed by me in the past century on this list) is better. It is expected that
the winding stepper will 'slip', this slip provides the tension. Some of the
best bobbin holders are self made using wooden dowels split down the length and
sprained with a long screw and cones into the bobbin. They also center it 
perfectly.

Peter





-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist