These are the "C" clamps I use to hold the beads on the bamboo skewers, one on each end. I find that pressing the beads in on themselves so they don't knock about is better than giving them any space in between.
An added bonus to keeping the beads on the skewer you make them on, cure them in, and now wet sand them on is NO SORTING loose beads everywhere. Also when you sand them together you get control over their diameter, an added bonus since I was just being lazy when I figured this out.
For 10 more tips on Sanding read the ramble: This is dedicated to the one I RUB.