Seems after several practices, I am starting to feel that space balls is more work than simply dry fit and use 2 brad nails? So far, with the space balls, I have to squeeze hard, use clamps, even band clamps too!
But, first, I should sit down and read the link David gave me (to learn about humidity with wood).
From top of my head, it appears that if I was doing raised panels during summer time (which it will mostly happen), I will have to struggle with the assembly with the space balls, to make it TIGHT, so that when humidity drops (winter), it's "OK"? In fact, I cut the space balls in halfs for the top/bottom.
Unless I get better instructions on cutting raised panel assemblies, I only have that Excel calculations, which seems good (still hard with space balls, even if I put down 1/2" for "Panel Expansion Allowance" (to fit the 1/4" space balls on each side).
I also think I need better bits since the ones I have (3-piece set) was $60 worth. I am looking into getting Freud (97-108 for $154.99) or MAYBE CMT (but they don't have a 3-piece set of roundover plus cove, will have to pay two separate prices).
I am not giving up, just want to know more or am I "worried" too much?
Chuck