1. Before placing a wooden hive top feeder on your hive, fill it with water and wait for it to leak.
2. After the cracks have formed, dump the water out, dry the feeder and shove glue into the cracks.
3. Repeat steps 1 and 2.
4. Repeat steps 1 and 2.
5. Once all the cracks are glued and re-glued, coat the entire feeder with waterproof urethane.*
6. Coat with urethane again, inside and out, until the entire feeder is glossy even if you've purchased satin finish.
You are now ready to use the feeder. Whether your bees will use it is an entirely different story. Stay tuned for more on the Warré hive in the picture above.
BTW, this is an Ashforth-type feeder, which you can read about on Dave Cushman's site.
*We used Titebond III Ultimate Wood Glue and Minwax Helmsman Spar Urethane, both recommended by the manufacturer of the hivetop feeder. At least he got one thing right. The glue and urethane are top-notch.