Working with Mills: Bulk Submission Checklist
Bulk submission to a fabric mill — say, 30 prints for a fall collection — is fundamentally different from one-off submission. File naming, color organization, sampling plans, and approval gates all need to be set up before the first file uploads. A messy bulk submission costs the mill 5-10 hours of pre-press triage, and they pass that cost back to you. This 12-point checklist is the difference between a smooth bulk run and a billing dispute.
Step-by-Step Guide
Establish a project naming convention
Lock a naming convention before the first file uploads. Standard: 'PROJECT_DESIGN_COLORWAY_METHOD_VERSION.ext' — e.g., 'F25_Botanical01_Coral_Digital_v3.tiff'. Consistent naming lets the mill's pre-press team batch-process files without manual sorting. Inconsistent naming forces them to triage every file by hand.
- Lock convention before file 1 uploads
- Project + design + colorway + method + version
- Document the convention in the handoff doc
Build a master color book for the collection
Generate a single color book covering every color used across all designs in the collection, with a colour code and Lab values for each. Document each color's Delta-E from intent and the recommended dye recipe. Mills price collection-level color setup once if you give them the master book; they price per-design if you don't. The savings on a 30-design collection can be $500-$2000.
- One master color book per collection
- Document Delta-E + dye recipe per color
- Save on per-design color setup
Provide a sampling plan upfront
Tell the mill which designs need full strike-offs, which need digital proofs only, and which can ship to production without sampling. A typical collection might be: 20% full strike-off (high-stakes designs), 50% digital proof (mid-stakes), 30% direct-to-production (low-stakes basics). The plan affects the mill's scheduling and your final lead time.
- Strike-off = physical sample, $20-100 each
- Digital proof = soft proof, free
- Direct-to-production = trust the file, fastest
Set explicit approval gates and deadlines
Define approval gates with deadlines: 'All colour selections approved by [date]', 'All strike-offs reviewed within 5 business days', 'Production go-ahead by [date]'. Without explicit gates, the mill assumes you'll respond instantly and schedules accordingly — your delay becomes their idle press time, which they bill for.
- Gate 1: colour approval
- Gate 2: Strike-off review
- Gate 3: Production go-ahead
Bundle each design in a standardized folder structure
Each design folder should contain: production_ready.tiff, color_spec.pdf, rapport_spec.txt, halftone_spec.txt (if screen-printing), preview.png, source_files/ (the editable masters). Standardized structure lets the mill batch-process; every design works identically.
- Same folder structure per design
- Production file + 4 spec docs + preview
- Source files in a sub-folder
Coordinate fabric base allocation across designs
If multiple designs share a fabric base (e.g., 8 designs all on cotton-poplin-150gsm), submit them in a single batch — the mill can run them on a continuous press setup, saving setup time and cost. Designs on different bases run in separate setups; submitting them together doesn't help.
- Batch designs by fabric base
- Same-base designs share press setup
- Different-base designs are separate runs
Document any non-standard requirements
If a design needs a non-standard finish (water-repellent treatment, anti-microbial, fire-retardant, brushed back), document it in the handoff. Mills offer many add-on treatments; they need the specification to schedule the right post-print processing. Treatments add 1-3 days to lead time and 5-25% to cost.
- Document treatments explicitly
- 1-3 days added per treatment
- 5-25% cost premium typical
Confirm payment terms and incoterms before sending
Bulk submission triggers commercial commitments. Confirm payment terms (deposit %, payment milestones, currency), incoterms (FOB, CIF, DDP — who pays freight and import duty), and dispute-resolution path before files reach pre-press. A mid-production payment dispute can hold your inventory hostage for weeks.
- Lock payment terms in writing
- Incoterms decide who pays freight + duty
- Document the dispute path before disputes happen
Common Mistakes to Avoid
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