I didn't follow the plans very closely (my bolts and dimensions were different) - I just used the general layout of the stepladder as a guide.
This was the first project I've made using a tablesaw. You could make this stepladder with a circular saw or even a handsaw, but I found the tablesaw made precision cuts really easy.
In this instructable I also describe how to use a router to make dado joints and consistent curved corners.
Step 1: Materials
You'll need a sufficient quantity of reasonable quality wood - I used about 7 planks of white pine, measuring 90 x 20 x 900 mm
8 x M8 carriage bolts, about 55 mm long
8 x M8 washers
8 x M8 lock washers
I used carriage bolts which have a large dome head, this means you only need a washer on the end with the nut.
The lock washers are needed because the bolt are inside a moving joint. Without the lock washers the nuts would gradually undo themselves.
M6 bolts would have worked fine too.
Step 2: Tools
Drill press (the bolts really need straight, 90 degree holes)
Router (not essential)
Jigsaw (not essential)
Sandpaper - I used grits 180 and 320.
Eye protection (essential)
This project uses several power tools. Respect these tools, never take shortcuts. Safety First. Remember hearing and eye protection.
Step 3: Overview
- Back support: Two sides with three joining pieces (stretchers). Joined by dowel-reinforced butt joints
- The steps: Two sides with three steps. Joined by dado joints.
- The top: Five slats with two supports. Joined by dado joints.
- Side supports: Two simple side pieces with rounded ends.
The stepladder folds up to form a compact unit for storage.