Like you, I use 3/64" for my micro coils for my PT2/Mini's...but I use a block of scrap wood for a jig -- one edge for 3/64", one for 1/16" (for my IGO drippers...). Using a set screw to hold one end of the wire while winding keeps my wraps tight - and touching!!Maybe I'm crazy, I don't use a jig or anything. I've wrapped nano coils on 1/32" bits, but 3/64" is my preferred micro coil size. My technique involves steady tension without trying to wrap them tight. Light, steady tension. Let the loose end of the wire slide into the next wrap as you go.
Then just wrap and keep them coils touching.
Takes some practice but I rarely ever mess a coil up. I just wrapped 3 micros in the past 30 minutes, and I'm wrapping 2 more in different sizes. Bits, jig, or blunt tip needle is really the way to go with micros.
Just started winding my own coils a couple of weeks ago when I got my first IGO-L...and have progressed to rebuilding PT2's and Mini's!!
Gotta be careful now....I'm likely to end up spending more time WINDING than vaping!!

Happy (vaping) Trails!