Take that, pattern!
Mods: My sewing machine was state-of-the-art fancy schmancy when I bought it, and since the invisible thread hadn't arrived yet, I used one of the bazillion computer chip decorative stitches to attach the hexes to each other with black thread. If you can't go invisible, might as well go very visible. That worked really well- I just pinned the hexes to the batting and sewed them directly to it and each other. I arbitrarily decided that the pincushion didn't need to be 4" tall (partly because: duh, but partly also because I didn't have enough safflower seeds to fill another tall one and The Farm Store was closed by then). I just used 1 row of squares for the side, which makes for a nice, compact pincushion, though turning it through the side opening was a little like birthin' babies.
Otherwise, I made it to the pattern specs (still using the 6" circle, because 6" is plenty big for a pincushion), and this one wins!
p.s. my husband still laughed out loud