I'm not in a position to try this, being more of a theoretical than a
practical person (still not started on my T41) but musing, I wonder if one was
to wind the wire loosely around a pencil or something of a slightly larger
diameter than the cross section of the toroid and then to screw the wire
onto the toroid and then fettle it to tighten the turns?
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On Sun, Feb 2, 2025 at 06:01 PM, jjpurdum wrote:
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.
Jack, W8TEE
jjpurdum