Pin Grading System

Pin grading is an essential process to ensure the product’s quality. Every pin maker has his own grading system and his tolerance threshold, but it usually starts with a visual appreciation of the pin. I look for any potential defect, scratch, missing color area, spot, … Pins are categorized in three groups, the list below clarify the meaning of each grades. Please keep in mind that enamel pins are handmade item, they cannot be 100% perfect.

A grade pins (standard)

It’s the highest quality, some may have minor defects only visible during a thorough examination, but they still look very nice.

Some example of A grade defects:

  • Slight color/glitter overflow
  • Unnoticeable rubbles
  • Minor imperfections

B grade pins (second)

They are close to A grade, nevertheless they have noticeable flaws. Obviously, it involves a lower price.

  • Thicker metal lines
  • Slight oxidation of the metal
  • Minor air bubbles, scratches, dents
  • Small color overflow
  • Dark spots on glitter
  • Negligible glitter’s missing areas
  • Noticeable underfilled areas (color or polish)

C grades (bad)

Those pins are the most flawed. This are the mains flaws:

  • Oxidation (main cause)
  • Important scratches, spots
  • Lack of polish
  • Wrong color
  • Unfilled areas
  • Large glitter overflow
  • Air bubbles

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Pin grading is the most important thing about quality check!