Assumptions log
For planning, we assume all ordered parts have arrived and all machines work as expected. Each row below is something the design currently depends on but nobody has verified yet. When a test confirms or breaks an assumption, change its status and link the issue.
Status: Assumed (not verified) · Confirmed · Broken (design must change)
| ID | Assumption | Used in | Verify with | Status |
|---|---|---|---|---|
| A1 | Parts orders (holders, LEDs, resistors, multimeters, copper tape) arrive on time | Whole plan | Week 1, Day 1 order issue | Assumed |
| A2 | The Motorobit "CR2032 holder, cover and switch, transparent" is 24 × 34 × 6.2 mm, has wire leads, and the switch and cover are reachable from below | Base plate footprint, diffuser window | Holder sample on arrival | Assumed |
| A3 | A child cannot easily open the holder cover; the cell stays inside | Safety | Hand test with 5 samples | Assumed |
| A4 | The switch survives 100 on/off cycles | Electronics | Bench test | Assumed |
| A5 | The 5 mm copper tape has conductive adhesive (adhesive side to foil side reads as conductive) | Rails, patches | Copper tape check, Day 1 | Assumed |
| A6 | A CR2032 lights white and blue 5 mm LEDs well enough without resistors; 15–25 h of running time | LED set, resistor decision | Bench test, Day 3 | Assumed |
| A7 | Real plywood thickness is 3.0 mm | All slots | Caliper measurement | Assumed |
| A8 | SLOT_W 3.1 mm works as a child-friendly fit |
Base, panel, wing | Comb test, Day 1 | Assumed |
| A9 | Nose cone slotW 3.3 mm and diffuser pocketD 110.4 mm fit |
3D parts | 3D test prints, Day 2 | Assumed |
| A10 | Light from the LEDs under the plate reaches and visibly lights the nose cone | Dark-room look | Dark-room test, Day 4 | Assumed |
| A11 | A panel held by one 28 mm tab stands upright once the nose cone is on | Mechanics | Integrated prototype, Day 4 | Assumed |
| A12 | A wing held by one 20 mm tab does not lean or snap | Mechanics | Integrated prototype, Day 4 | Assumed |
| A13 | The GS-24 can feed a 50 mm wide conductive copper roll and thin rails can be weeded; otherwise rails are cut by hand with a jig | Copper band file | GS-24 test, Day 5 | Assumed |
| A14 | BN-20 stickers stick to bare birch plywood and peel cleanly | Sticker sheet | BN-20 test, Day 5 | Assumed |
| A15 | An adult builds a ship in 15–20 min; a child needs 35–45 min | Lesson plan | Integrated prototype, then pilot | Assumed |
| A16 | Filament use is about 45 g per kit (upper bound, 100% infill) | Kit list | First print | Assumed |
How to update this page
- Run the test and record it in a Test result issue.
- Change the status in this table and link the issue number.
- If an assumption is Broken, open a pull request that changes the design parameters, and add a line to
CHANGELOG.md.