Building chip trays... Page 3. Discuss Building chip trays..., on ChipTalk.net the place to go for your Poker chips and gambling tips. Read it in Poker Chip Cases.
Certainly do-able, but I'd suggest acquiring the racks before you plan the case. See if what you get is what you want to use. Some of the wood racks I've seen (locally) aren't too good, though I have no direct experience with this particular product from 5star.