QC Tutorial

QC Tutorial

Published: Updated:

Quality Control separates successful spreadsheet shopping from expensive disappointment. This comprehensive QC tutorial teaches UK buyers exactly what to request, how to evaluate photos like a professional authenticator, and when to Green Light or Red Light an order. From shoe stitching patterns to hoodie drawstring weights, we cover the specific details that matter most. Master these techniques and you will achieve a 95% satisfaction rate on your oopbuy spreadsheet orders.

Essential QC Photo Checklist

Never settle for fewer than six QC photos. The essential shots every buyer should request are: front full view, back full view, both side profiles, logo/print close-up, tag/label detail, and material texture close-up. For shoes specifically, add insole photos, sole tread pattern, box label, and lace tip detail. For clothing, add seam stitching, zipper/hardware detail, and interior lining photos. Premium sellers provide these automatically; budget sellers may need explicit requests.

CategoryMinimum PhotosCritical DetailCommon Flaw
Shoes8Logo alignmentOff-center logos, wrong colors
Hoodies6Print qualityCracked prints, wrong font
T-Shirts6Fabric weightToo thin, wrong texture
Jackets7Hardware qualityPlastic zips, weak snaps
Pants6Stitching patternLoose threads, uneven hems
Accessories5Engraving detailFaded stamps, wrong spacing

Reading QC Photos Like a Pro

Photo quality varies enormously between sellers. Good QC photos use natural lighting, neutral backgrounds, and proper focus. Red flags include: excessive shadow hiding details, filtered or color-altered images, photos shot at angles that obscure flaws, and suspiciously low resolution. Request retakes if any critical detail is unclear. Professional buyers maintain reference libraries of retail product photos for side-by-side comparison during QC review.

The GL/RL Decision Framework

Green Light means approve shipping; Red Light means request exchange or refund. Use this framework: GL if all critical details match reference photos within acceptable variance, materials feel correct based on photos, sizing aligns with measurements provided, and no visible defects exceed minor acceptable thresholds. RL immediately for logo placement errors exceeding 2mm, color shade mismatches obvious in photos, missing or broken hardware, obvious size discrepancies beyond 1cm, and any material substitutions. When uncertain, request an additional specific photo before deciding.

Communicating QC Issues with Sellers

Professional QC communication gets faster resolution. Include the photo number, specific flaw description, reference photo comparison, and desired resolution (exchange/refund/accept with discount). Most reputable sellers respond within 24 hours to well-documented RL requests. Budget sellers may resist exchanges; in these cases, partial refunds are often negotiable. Document all QC communication in writing through the platforms messaging system, not third-party chat apps, for dispute protection.

Common QC Flaws by Category

Shoes: heel cup shape errors, toe box proportions, midsole paint inconsistencies, lace tip metal quality. Hoodies/T-Shirts: print registration shifts, screen cracking under tension, neck tag font spacing, drawstring tip quality. Jackets: zipper slider branding, pocket alignment, cuff elasticity, lining color match. Accessories: engraving depth consistency, clasp mechanism smoothness, weight heft, stitching line straightness. Budget items under £20 should have lower expectations; premium tier items should be scrutinized aggressively.

Frequently Asked Questions

How many QC photos should I request?
Minimum 6 for clothing, 8 for shoes, 5 for accessories. Premium sellers provide these automatically. Budget sellers may charge small fees for extra photos.
What does GL and RL mean?
GL means Green Light (approve for shipping). RL means Red Light (reject and request exchange or refund).
Can I RL after approving?
No, once you GL, the item ships and you cannot return it for QC-related issues. Be absolutely certain before approving.
How long do sellers take to reship after RL?
Reputable sellers reship within 3-5 days. Budget sellers may take 7-10 days. Always confirm reship timelines before placing RL.

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