Smartphone Building
Part · discovery

Drill bit stock

Selected material-specific bit blanks with replaceable retained cutting edges; discovery hypothesis, grade/quantity/capability unreviewed.

Discovered · unresearchedClosure: OpenInventory incomplete

Capability requirements and tolerances

Consumer-specific numerical targets, quantities and acceptance limits remain open or incompletely reviewed. No smartphone-grade suitability is claimed. Distinct capability tiers require their own making route and qualification.

Parts and Tools needed

No researched inventory yet. This is an unexpanded frontier; an empty list does not mean the item can be obtained directly from nature.

What remains unresolved

Canonical reuse assessment
{
  "checked": [
    "tool-steel",
    "cutting-tool-set"
  ],
  "decision": "Drilling cutting geometry/retention differs from general machine cutter set; grade and work range remain unknown."
}

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Used by

Items that directly require this item in their selected inventory.

Paths from Smartphone

These routes together include every item that can lead from Smartphone to this item. Repeated path combinations are collapsed; recipes are omitted.

Shortest route: Smartphone → Covers → Molding die set → Drill → Drill bit stock

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