In article ,
"N_Cook" wrote:

N_Cook wrote in message
...
Does anyone know of a source of data for the traverse spacing, turns per
mm
or mil, for the smallest wire gauges of say 45 to 50 SWG or 40 to 45 AWG.

If wire is 0.05 mm thick, say, then the traverse should lay down at
something marginally wider than that. I appreciate it is dependent on
drawing die imperfections/ enamel thickness/ chaffing etc but at least a
starting value and then suck it and see with a trial run or 2 with the
actual wire. Or a formula for the general case.

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/




from the table at the top of
http://136.159.225.44/AlliedData2.pdf
then it would seem that for
35 AWG = 5.715 mil = 0.14mm ~= 38.5 SWG
increase is 17 percent
40 AWG = 3.145 mil = 0.8mm ~= 44.2 SWG
increase is 13 percent

46 AWG = 1.57 mil = 0.04 mm ~= 48.1 SWG
increase would be ?
that table only goes up to 40 AWG.
I would have expected the percentage increase would increase with finer
gauge wire. And there does not seem to be a straightforward AWG to SWG
conversion either


We buy coil wire from MWS. Lots of good technical data on their website.
Note that the Allied table you linked is for bare copper. Coil wire is
insulated, which adds to the diameter.

http://www.mwswire.com/