Thanks for your help, Stobe. I got the red t-molding on my little X-Arcade trackball this weekend, using hot glue. It worked *almost* perfectly. There are a few spots where the t-molding isn't quite flush w/ the edge of the wood, especially around corners (even though I did trim away the inserted portion of the t-molding at corners).
Most parts took 2 tries: fill the slot w/ glue, jam the t-molding in, hold for a while, watch it pull back a little when I remove pressure, yank it out so that it makes a bunch of snot bridges when I pull it away, coat the t-molding, re-smush, hold, then it was usually ok.
Notes:
1 - It's tough to get dried hot glue out of textured vinyl laminate cover--wipe it off when it's still wet!
2 - The slots routed into the X-Arcade trackball are *much* wider than the barbs on the 5/8" t-molding from t-molding.com!
Pictures will follow, eventually, when my cabinet is farther along...
Thanks,
-Jason