Organize filament by the next printing decision. A shelf sorted only by color makes it easy to confuse formulations, overlook preparation history or start a job with too little material.
Use one label per spool
| Field | Why you will use it |
|---|---|
| Brand and exact formulation | Select the right material profile |
| Diameter and color | Match hardware and appearance |
| Opened date | Track exposure history without assuming a fixed expiry |
| Preparation record | Know which documented drying cycle was last performed |
| Remaining amount | Decide whether the next job can finish |
| Storage location | Find the spool without opening every container |
Prusa’s drying documentation uses material- and spool-specific instructions. Keeping exact identities is more useful than a generic “dry filament” sticker.
How should I estimate remaining material?
Use a consistent method and label estimates as estimates. If weighing, account for the correct empty spool weight. The remaining-filament guide covers that calculation.
Does an old opened date mean the spool is unusable?
Not by itself. Check storage conditions, material condition and the supplier’s guidance. The date is a prompt to inspect and prepare, not an invented expiration rule.
If the inventory reveals a missing packing or organization step, the storage-kit and organizer shortlist separates those purchases. Buy for the missing task; a covered rack does not replace the moisture protection around individual rolls.
Make three physical groups
- Ready for a named job: identity, quantity and preparation checked.
- Needs preparation: known material with a clear next action.
- Unidentified or problematic: kept out of routine production until resolved.
Update the label when a spool changes state. The system succeeds when it prevents one wrong profile or interrupted print, not when it becomes a second hobby to maintain.
A five-minute shelf reset
Example inventory entry
S-014 · Brand/formulation from spool label · Blue · Profile filename/version · Opened date · Last documented preparation · Estimated remaining amount · Box B2 · Next action: confirm quantity for the queued job.
This is a record layout, not a real tested spool. Leave uncertain values marked unknown instead of filling them with guesses.
