Filament Stock Management in Your Workshop: Lot/FIFO Tracking

Filament Stock Management in Your Workshop: Lot/FIFO Tracking In a 3D printing workshop, what usually stops production is not a shortage of orders but a shortage of material. The sentence "The filament for the job I planned to print tomorrow is finished" means the delivery date is delayed. Therefore, stock management is an operational necessity. Why Should Filament Be Recorded? Filament absorbs moisture over time. Moist filament shows itself as popping during printing, bubbles on the surface, and weak interlayer bonding. Additionally, each spool has a batch (lot); even the same color and type can exhibit different flow behavior in different batches. Therefore, both quantity and batch information should be tracked. What Are Lot and FIFO? - Lot: A filament group coming from the same production batch. When a problem occurs, it helps identify which orders are affected. - FIFO (First In, First Out): The rule that the first received material is used first. This way, older spools do not sit on the shelf and spoil. Why Is the Critical Level Alert Important? Knowing how much is left in stock is not enough; you also need the answer to whether it is sufficient for order production. For example, if you have 400 grams of filament and a job requiring 600 grams comes in, you need to know this before accepting the order. Critical level alerts prevent taking on delivery date risk. An Applicable Stock System 1. Label each spool: type, color, weight, lot, and purchase date. 2. Consider the remaining amount with the production record: When production is approved, consumable material should be automatically deducted from stock. 3. Standardize storage conditions: Dry and cool environment; for opened spools, use vacuum bags or drying boxes. 4. Set a reorder threshold: Get a warning before running out. 5. Perform periodic counting: The record in the system should be compared with physical stock at least once a month. The Hidden Cost of Stock Loss In workshops without stock records, material is reflected incorrectly or missing in order cost. Not knowing the actual amount of filament used in a job leaves profit margin to guesswork. Lot-based tracking improves both cost accuracy and quality consistency. PrintFlow TR offers stock tracking and critical level alerts with the lot/FIFO logic. When production is approved, consumable material is deducted from stock and accounted in cost; thus, both stock and profitability can be monitored from a single panel.