Product pillars
The leverWeighted, damped, mechanical, the personality of the product. 200g pull, hydraulic damper, brass detent.
Replaceable elementTool-free swap via rear hatch; the anti-disposable bet. Element is a $24 part, not a $165 landfill event.
A shell worth keeping1.2mm bent steel, two colorways, zero plastic visible. Closer to a hi-fi component than an appliance.
Architecture decisions · choice vs alternative
| Subsystem | Choice | Alternative considered | Why | Status |
|---|---|---|---|---|
| Heating | Quartz tube, replaceable cartridge | Nichrome mesh (cheaper) | Swappable + even browning | bench test |
| Timing | Bimetal + cam | Microcontroller | No firmware, no failure mode | locked |
| Enclosure | Bent steel, 4 fasteners | Die-cast aluminum | Repairable, tools-optional | CNC v3 queued |
| Lever | Damped rack + brass detent | Spring-only | The feel IS the product | study running |
| Finish | Powder coat | PVD | Cost + re-coatable | locked |
Prototype test results · v3 bench
| Test | Result | Target | Next step |
|---|---|---|---|
| Browning evenness | ±8% across slot | ±5% | Reflector geometry rev |
| Element swap time | 94 seconds | <120s | pass |
| Thermal cycling (120% duty) | 410 cycles, no drift | 1,000 | continue to Jul 11 |
| Lever feel panel (n=9) | 7/9 'premium' | 8/9 | Damper viscosity +10% |
| Cord pull tip-over | fails at 40° counter edge | no tip | Foot redesign, safety thread |
$58
BOM + assembly
31
Unique parts
9
Wearing parts, all orderable
v4
Next integrated proto
Scope, against the evidence for it
| Element | Traces to | Status |
|---|---|---|
| Replaceable element | Repairability, 11th to 4th purchase factor | evidenced |
| Two-slot format | Early sketch review, counter footprint | evidenced |
| Damped mechanical lever | Nine-person feel panel, 7 of 9 said premium | hypothesis |
| Bent steel, zero visible plastic | Design-led segment, 28% of premium dollars | evidenced |
| No screen, no app, no firmware | Revolution's firmware fatigue in returns data | evidenced |
| Two colorways at launch | Poll running, 41 votes, closes Jul 10 | hypothesis |
Deliberately excluded, and what would earn it back
Four-slot variantDilutes the design-led positioning. Re-entry if demand data flips or retail demands a family.excluded
Any connectivityRe-entry never. This is a positioning commitment, not a cost decision, and reversing it forfeits the argument.locked out
Toaster-oven formatA different product against a different substitute. Re-entry only as a second SKU after 10K units.excluded
Proprietary element cartridgeWould make the consumable line captive. Rejected in Business Model; re-entry would contradict the repair promise.locked out
Technology readiness
| Subsystem | Rung of 10 | What the next rung requires |
|---|---|---|
| Heating and browning | 7 · validated in relevant environment | 1,000 thermal cycles, currently 410 |
| Element swap mechanism | 8 · qualified | Nothing. 94 seconds against a 120 target |
| Lever feel | 5 · validated in lab | A panel larger than nine, at target damping |
| Enclosure and safety | 4 · component validation | Cord tip-over fix, then UL pre-review |
| Manufacturing at 5K | 3 · proof of concept | A locked element price and a signed capacity reservation |