How to Use a Comb Binding Machine

Comb binding is one of the most widely used document finishing methods in offices and schools — fast, affordable, fully editable, and professional in appearance. This step-by-step guide takes you through the complete binding process: setting up your machine, selecting the correct comb size, punching, threading, and closing the finished book. Whether you are producing your first bound document or training a new team member, this guide covers everything needed for consistent, professional-quality results every time.

Before you start, make sure you have the right machine for your volume. Our buying guide on what features to look for in a comb binding machine covers every specification worth knowing.

What Is Comb Binding?

Comb binding uses a plastic spine with curved tines — the "comb" — that thread through a row of rectangular holes punched along the binding edge of a document. A machine opens the comb, the punched pages are threaded onto the open rings, and the comb is released to close — locking all pages in place. The finished document opens completely flat to 360 degrees and can be edited at any time by re-opening the comb and adjusting pages.

Plastic combs are available from 3/16 inch (approximately 10 pages) to 2 inches (approximately 425 pages) and in over 16 colors — more size and color options than any other binding spine system. For the full range of sizes and colors and guidance on color-coding strategies, see our guide on what colors of plastic combs are available. For a complete supply checklist, see our article on what comb binding supplies you need.

Why Comb Binding Remains the Most Popular Office Binding Method

Fully Editable After Binding

Pages can be added, removed, or reordered at any time by re-opening the comb. This is comb binding's biggest practical advantage over Fastback, thermal, wire, or coil binding. For organizations that update training manuals, price lists, or policy documents regularly, editability eliminates reprinting entire documents when only a few pages change.

Lowest Per-Document Supply Cost

Plastic combs are among the least expensive binding spines per unit of any system. A box of 100 combs in a standard size typically costs less than other spine formats at equivalent page capacity.

Widest Color and Size Selection

19 or more standard colors and sizes from 3/16 inch to 2 inches make comb binding uniquely suited to color-coding systems across large organizations. No other binding method offers a comparable combination of color range and size range. For a full case for the system, see our overview on why you should choose plastic comb binding.

How to Use a Comb Binding Machine — Step-by-Step

Step 1 — Collate and Square Your Document

Assemble all pages in final order with the front cover on top and back cover on the bottom. Jog the stack firmly on a flat surface to align all four edges. Clean, aligned edges produce clean, consistent holes — misaligned pages produce off-center holes that make the finished book look unprofessional and make threading more difficult.

Step 2 — Select the Correct Comb Size

Use the quick reference table below to select a comb that closes with a slight snap and holds pages snugly. When in doubt, go one size up — a slightly oversized comb is better than one too small to close fully over your page count.

Step 3 — Set Up the Machine

Set the paper stop to the correct spine length for your paper size. If binding non-letter-size documents, disengage the outer punch pins so only the pins matching your paper width are active. Empty the chip tray before starting a long binding run.

Step 4 — Punch the Document

Insert a batch of pages into the punch slot against the paper stop. Press the punch handle firmly in one smooth stroke (manual) or press the activation button (electric). Do not exceed the machine's rated punch capacity per stroke — overpunching tears holes and weakens the paper around each punch point. Work in consistent batch sizes throughout the entire document for uniform hole position on every page.

Step 5 — Open the Comb on the Machine

Place the plastic comb in the comb-opening section with the tines facing down into the opening slots. Activate the opener. The machine spreads the tines wide enough for pages to be threaded onto each ring. Use the machine's opener only — manually forcing the comb open by hand over-stretches the rings and causes premature ring fatigue.

Step 6 — Thread the Pages and Close

Position the punched document over the open comb with one punched hole per tine, working from one end to the other. Confirm every hole is fully seated on a tine before releasing the opener. Release the comb — the tines snap closed, securing all pages. Run your fingers along the full spine to confirm every tine is fully closed. For project ideas that benefit from this system, see our guide on 25 comb binding project ideas.

Quick Reference — Comb Size by Page Count

Troubleshooting

Video — How to Use a Comb Binding Machine

Frequently Asked Questions

How do I add pages to a finished comb-bound document?
Re-open the comb using the machine's opener, remove the document, insert the new pages in the correct position, re-thread onto the comb, and close. This full editability is comb binding's most important practical advantage over non-editable systems.

Can I use a comb binding machine for wire binding?
Standard comb machines punch rectangular slots for comb spines. Wire binding requires round holes at a different pitch — the two systems use separate machines and are not compatible without a different punch die.

What types of documents is comb binding best suited for?
Training manuals, proposals, school workbooks, price lists, cookbooks, catalogs — any document that benefits from lying flat when open and may need to be updated after initial binding.

How many times can a comb be opened and closed?
Most combs can be opened and closed dozens of times before the tines lose sufficient spring tension to close cleanly. Avoid over-opening the comb beyond what is needed to thread pages — this is the main cause of premature ring fatigue.

What is the maximum page count I can bind with a comb?
A 2-inch plastic comb holds approximately 425 sheets of 20 lb paper. For capacity details across all sizes, see our FAQ article on frequently asked questions about comb binding machines.