Folding Tray / Lap Desk — board plan

What to buy, and which parts come off which board.

Buy 3 boards at 8 ft.

3/4" × 1 1/2" — 1x2

2 boards · 1.2 board feet (includes 15% for knots and defects) · 70% of the boards you buy used

Board 1 · 1 1/4" left over
24"24"12"12"10 1/2"10 1/2"
1. Frame sides — 24"
2. Frame sides — 24"
3. Frame ends — 12"
4. Frame ends — 12"
5. Leg cross rails — 10 1/2"
6. Leg cross rails — 10 1/2"
Board 2 · 55 1/2" left over
9 3/4"9 3/4"9 3/4"9 3/4"
1. Leg uprights — 9 3/4"
2. Leg uprights — 9 3/4"
3. Leg uprights — 9 3/4"
4. Leg uprights — 9 3/4"

1/4" × 13 1/2" — 1/4" plywood

1 board · 0.6 board feet (includes 15% for knots and defects) · 26% of the boards you buy used

Board 1 · 70 7/8" left over
24"
1. Top — 24"

Cuts are listed longest-first, which is how they should be made: the awkward pieces get placed while there is still board to place them on. The layout assumes one end of each board is squared off (1") and that every cut costs 1/8" of kerf — the reason six 16″ parts do not fit on a 96″ board.

3/4" × 1 1/2" — 1x2

Board 1 · 1 1/4" left over

Board 2 · 55 1/2" left over

1/4" × 13 1/2" — 1/4" plywood

Board 1 · 70 7/8" left over