I'm winding the toroids for a new LPF board. Because the filter might be used with Bill's 100W PA, the wire size is increased to #20 gauge for winding on T68 cores. Because of the thicker wire and relative small cores, the Crochet Hook method suggested in the QST article doesn't work very well and runs the risk of kinking the wire. Therefore, I'm back to "hand-winding" the toroids.
FWIW, I've found that after I've threaded the wire through the center of the core, placing the wire between my thumb and forefinger, with the forefinger "on top" of the wire and gripping tightly and pulling the wire taught with my thumb "under" the wire tends to curl the wire that makes threading it through the center for the next turn much easier.
The curl thus formed is in the direction of the next turn and makes kinking less likely.
jjpurdum