1 Lightning Crystal + 1 Boomerang == 1 Maple Lumber
I was kinda hoping to get back my cotton thread so I could make more, but oh well, take what you can I guess. My woodworking skill is 24.9 and I failed approx 7 times before I succeeded, but it was also darksday. On lightsday, watersday, or lightningday you can probably do the synth a lot lower in level.