Most enjoyable: building cool grips.
Least enjoyable: grinding guide feet.
Little tip on finish. Less is more. The more you play with it, the harder it is. What has given me the best results is to slop the finish on everywhere you need it, let the rod rest for a minute or so and take the excess drips off the bottom. Rotate the rod 180° and repeat. After two or three cycles of this, all the excess finish will be removed and you can set it back to turning on the dryer. Wavy finish is a result of too much finish applied. Typically my first coat looks really bad, and you can see threads. You just want enough to saturate the threads. The second coat will give you your depth.