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Ergonomic stools provide the combined benefit of being both good for your back and being a convenient spare due to the fact that you can fold them up when they are not in use. The stool is surprisingly easy to construct: there are no complicated joints to make and no special tools required. This stool is made out of 1 1/2" thick dowel, which can be difficult to find. However, if you cannot find this thickness you can get away with 1 1/4" wood.
Construction
Tools required: Drill, sander
Wood required: (beech)
| Description | Qty | Thickness | Width | Length |
| Base support | 2 | 1 1/2" (38 mm) | 1 1/2" (38 mm) | 16" (406 mm) |
| Back legs | 2 | 1 1/2" (38 mm) | 1 1/2" (38 mm) | 21 3/4" (552 mm) |
| Front legs | 2 | 1 1/2" (38 mm) | 1 1/2" (38 mm) | 19 1/2" (495 mm) |
| Cross support beam | 1 | 1 1/2" (38 mm) | 1 1/2" (38 mm) | 6" (152 mm) |
| Vertical support beam | 1 | 1 1/2" (38 mm) | 1 1/2" (38 mm) | 5" (127 mm) |
| Joining dowels | 4 | 7/8" (22 mm) | 7/8" (22 mm) | 1 3/4" (44 mm) |
| Seat rest dowels | 4 | 7/8" (22 mm) | 7/8" (22 mm) | 3/4" (19 mm) |
| Top seat (plywood) | 1 | 1/4" (6 mm) | 6 1/2" (165 mm) | 14" (356 mm) |
| Knee seat (plywood) | 1 | 1/4" (6 mm) | 9" (229 mm) | 13 1/2" (346 mm) |
| Stopper body | 4 | 1" (25 mm) | 1" (25 mm) | 1 1/2" (38 mm) |
| Stopper end | 4 | 1 1/2" (38 mm) | 1 1/2" (28 mm) | 3/8" (10 mm) |
First we need to construct the four stoppers. To make these, take four pieces of dowel 1" diameter and 1 1/2" long. On one end of each of these glue a narrow sliver of dowel that is 1 1/2" diameter and 3/8" long. The result is a small mushroom-shaped stopper.
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