Laying out the pieces the way they'll go
Okay. All your pieces are cut. You've got a stack of boards on your bench that used to be one board, or a few boards, and now you've got to figure out how they go back together into an actual shelf.
This is the dry fit. No glue, no nails, no screws. You're just laying everything out in the shape of the finished thing so you can look at it before it's permanent.
I've said this before but I'll say it again because it's the whole reason we're doing this lesson. I glued a joint upside down once. Didn't catch it until the next morning when the clamps came off and I sat there for a solid minute wondering why the shelf looked wrong before I figured out what I'd done. Now I dry fit every single time, no exceptions, even on something as simple as this shelf. I'd recommend it to anyone, beginner or not.
Laying it out
Find yourself some floor space or a big enough section of bench. Lay your pieces down roughly the way they'll go when the thing is standing up. Your sides, your shelf boards, your back piece if your plan has one.
Don't force anything together yet. Just look at it flat, the way it'll sit.
A few things to check while it's laid out:
Count your pieces against your plan. Sounds obvious, but it's the fastest way to catch a problem before it becomes a problem. If your plan calls for two side pieces and two shelf boards and you're only seeing three boards on the ground, better to know now.
Check which face is which. Wood has a good side and a not-as-good side, usually. Knots, a rough patch, maybe a little bit of grain that looks wild in one spot. Decide now which face is going to show and which face is going to hide against a wall or on the underside. Once you're assembling for real you don't want to be making that decision with glue already drying.
Check your orientation. This is the one that gets people, and it got me. It is very easy to lay a piece down thinking it goes one way and have it actually need to go the other way, especially if two pieces are close to the same size. Hold each piece up next to where it goes in the plan before you settle on it.
Putting it together loose
Once you've got everything laid out and it looks right, start bringing the joints together. No glue. If you're using screws or nails for this shelf, don't drive them yet either. You want to be able to pull it apart just as easily as you put it together.
Push the pieces together snug. Not hammered into place, just snug, the way they'd sit if everything's cut right.
Now step back and look at it standing up if you can manage that safely, or at least look at it from the end, sighting down the length of it. You're checking for:
- Gaps at the joints. A little gap tells you something's off in a cut, or a piece isn't seated right.
- Square. Pull out that square you've been using this whole class and check the corners. If it doesn't look square now, it's not going to get more square once there's glue in it.
- The overall shape matching what you pictured when you started this class.
If something's off, this is the moment to fix it. Maybe that means a piece needs to go back to the saw for a small trim. Maybe it means you swap which side is up. This is the cheap mistake to make. Everything gets more expensive to fix once there's glue involved.
I'll tell you, I've had people in this class get a little impatient at this stage because it feels like we're not doing anything. No cutting, no drilling, just looking at wood on the floor. I get it. But the thing is, this is the step that decides whether the rest of your build goes smooth or goes sideways. I'd rather you spend twenty extra minutes here than spend it un-gluing something tomorrow morning.
I built a bookcase for my friend Alexandria's kids a while back, and when we got to the last piece, I let her youngest hammer in the final nail himself. He was maybe seven. The nail went in crooked, bent over a little at the top, and everybody in the room could see it. We talked about pulling it and trying again, and in the end we just left it. That crooked nail is still in that bookcase as far as I know. Nobody remembers the shelf is a hair off level. Everybody remembers whose nail that is.
I bring that up here because a dry fit isn't about getting something perfect. It's about knowing what you're building before you commit to it, so that if something ends up a little crooked, it's crooked on purpose, or at least crooked with your eyes open. Not crooked because you didn't look.
Before next time
Leave your dry-fit shelf assembled, loose, right where it is if you've got the space for it. Walk past it a few times before our next class and see if anything still bothers you. Sometimes you don't spot the issue until you've looked at it standing there for a day.