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HELP: winding a small coil

J

J.B.

Jan 1, 1970
0
Hello

I have a small coil whose wire is cut somewhere in the interior. I
believe that to fix it I should unwind the copper wire and wind again
the coil with new wire.

I have measured the wire diameter, and it seems to be about 0.07 mm. I
have purchased enough 0.071 mm wire (45 SWG) and am ready for
everything.

And here is where I would specially acknowledge any assistance: Do you
have any hints on how to wind so small a coil, with so thin a wire? Any
recommendation will be highly appreciated).

Thanks and best regards.

Jesus, in Spain
jbenajesATmotDOTupvDOTes
 
T

TimPerry

Jan 1, 1970
0
indago said:
041116 0718 - J.B. posted:


I can't see your coil form so this would be a suggestion. Use a drill motor
with a trigger control and fasten it in a vise or use a chain vise grip to
fasten it to a workbench somehow. Most coil forms have a hollow, and you
can fit a long screw -- maybe 1/4-20 x 4" -- into the hollow and fasten it
with some fender washers and a nut. You can fit the beginning of the wire
through a hole in the form and then start the motor turning slowly and feed
the wire with your other hand carefully onto the form. This is a tedious
process at best, but you can make the coil look professional with careful
attention to feeding the wire onto the form. Once you get going you can
even up the speed of the motor. Someone could even work the motor while you
feed the wire onto the form, and with careful attention by both of you the
job could be completed quite competently.

sometimes it is helpful to apply clear nail polish or a thin lacquer after
each layer. let dry then proceed. this holds the fine wire in place for the
next layer
 
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