Wynn's Purple Spiral Binding Coils

Choose coil diameter based on the thickness of the finished book, including covers. The Wynn’s Purple options include many coil sizes, from smaller 6mm coils through larger sizes for thicker books. A coil that is too small will make pages hard to turn and may distort the book. A coil that is too large can look loose and unfinished. Measure the full stack after adding front and back covers, then choose the closest suitable coil size. For frequent production, keep a range of sizes on hand instead of forcing all jobs into one diameter. Related spiral coil binding supplies can help complete the setup.

Choose coil length based on the binding edge and trimming workflow. A 12" coil is commonly used for standard letter-size documents bound on the 11" edge because it gives extra length for inserting and crimping. A 9" coil suits shorter-edge work, while 15" and 18" coils support larger books such as legal, tabloid, or 11" x 17" projects when the punched edge requires more length. A 36" coil is used when longer custom work or cutting down is needed. Do not choose length by page count; page count affects coil diameter. Length is about the edge being bound, while diameter is about the stack thickness.

Purple coil can work for both, as long as it fits the brand, department, or document purpose. The Wynn’s Purple color gives reports, manuals, presentations, and training materials a more distinctive finish than black or clear coil. It can be useful for color-coding departments, separating course levels, matching company colors, or making client packets easier to identify. The product is still a durable PVC plastic coil with flexible page turning, so the color does not make it less practical. Buyers comparing finish options by shade can use spiral coil binding supplies by color to keep color choices consistent across jobs.

Do not buy by color first. Confirm pitch, coil diameter, coil length, and document size before choosing Wynn’s Purple. The most common mismatch is buying a 4:1 coil for a machine that punches a different pattern. Another mistake is choosing coil size by guessing page count without measuring the full stack with covers. For larger documents, also confirm coil length so the coil extends beyond the punched edge before crimping. Once the fit is right, the purple color becomes the finishing choice. Buyers producing many books should keep matching coil crimpers available because coil binding needs clean ends after insertion.