Hermit: 3/8 Line...
I'm doing 3/8 line for my traveler control line. I'm gradually replacing the running rigging and the control line is a bit fuzzy. I'm color-coding as I go. I have also spliced a lot of 5/16 but nothing smaller. I use the Sampson fids, but have also cut up a lot for projects, finding them handy at times. They are getting expensive, so I doubt I'll be doing that again. 1/4 inch sounds small, but there is noting to lose by trying.
Anyhow, I guess I just had a mental dysfunction, or the wine made my eyes cross. I'll park it for a while and do it again later in the month when we go to Catalina following a trip to Alaska (...on a cruise ship).
I actually have one of Byron's videos somewhere. I didn't by his handy tool tho. I watched a couple of u-tube videos and they helped. I have my old Sampson guide with my notes scratched all over it, but I still screwed up this splice royally.
I'm going to have a glass of wine (or maybe whine..). Thanks for all the suggestions.