Ha ha, I didn't even think about the wooden ball angle when he asked about slivers.
Suffice it to say in the 3 Lee presses I own that came with wood ball handles, and the 2 or 3 cutter "with ball grip" Lee trim tools I have... the balls are finished VERY nicely and I don't think you could get a sliver from one without attacking it with some tools.
Attention Brass rats and other reloaders: I really need .327 Federal Magnum brass, no lot size too small. Tell me what caliber you need and I'll see what I have to swap. PM me and we'll discuss.