I think I'll start with the 30 and see how that goesI'm planning on wrapping around a 1/16th" drill bit. Will that leave me a big enough hole for the cotton?
I'll be 64 in a few days. I had 20/10 vision till my early 40's when bam, overnight, I thought I was going blind. I was in school at the time with hours of reading to do daily. I see much better with my prescription readers, with no need for jeweler's magnification, that account for some slight astigmatism than the best store bought. I can do it with the cheap readers but I don't always hit the micro coil hole first time. Good lighting is essential if your sight is not fully corrected by readers. Good lighting, even with corrected vision, works better for me. It's not making the coil, shoot I can do that with my eyes closed, it's getting wire in holes fast and threading the cotton.
Feisty Alice