How Hole Punching Works

Reading the Fold Panels

Summary

One panel per fold

The fold panels are a strip of snapshots, read left to right, with an arrow pointing from each panel to the next. There is one panel per fold, and the first panel already shows the paper folded. The flat, unfolded sheet is never drawn. So an item with three panels put the paper through three folds, and the leftmost panel you see is the result of fold one, not the starting square.

The fold panels of a real item: three panels, one per fold, arrows between them. Each panel carries the same dashed square, and the punch is the open circle on the last panel.

That missing first panel is the most common early misreading. If you treat the leftmost panel as the starting sheet, you will be one fold short for the entire item.

The solid outline is the paper right now

The heavy solid line is the paper's actual edge after that panel's fold. Inside it there is paper; outside it there is none. The outline is exact — every corner and every slanted edge is an edge the folded sheet really has.

That is all the solid line tells you. It reports the paper's shape, not its thickness: a region covered by four stacked layers is drawn exactly like a region covered by one. Reading depth out of the outline is the subject of a later lesson; reading position is what you do here.

The dashed square is a fixed frame, not a memory

Each panel also carries a light dashed square. In the items you drill, that dashed square is the original full square, redrawn identically in every panel — same size, same place, from the first panel to the last. It never moves and never shrinks.

The official instructions describe the dashed outline as the position of the paper before it was folded. On a single-fold item those are the same square, so the two readings agree. On an item with two or three panels they do not, and what the panels actually draw is the original square every time. Read the dashed square as a fixed frame of reference: it shows you where the sheet started and how much of that starting area the paper still covers.

Flat sheet (never shown)
Fold 1
Fold 2
Fold 3
The same fold walk, panel by panel, drawn with the item's own convention: one dashed square — the original — plus the solid outline of the paper now. The flat sheet is added here for teaching; a real item starts at fold 1.

The practical rule follows directly. Never read the dashed square as "where the paper just was." The dashed square is identical in every panel, so it cannot tell you what changed between two panels. Only the solid outline changes, and only the solid outline carries the fold.

No crease is ever drawn

No panel marks the crease. There is no line, no arrow, and no shading to tell you where the paper bent — you recover each crease yourself by comparing outlines:

  • For the first panel, compare its solid outline against the dashed square. Wherever the solid outline has pulled in from the dashed edge, paper folded away from that side.
  • For every later panel, compare its solid outline against the previous panel's solid outline. The edge that moved is the fold; the edge that stayed put is the crease.

The figure below adds the previous panel's outline as a second dashed line so you can watch that comparison happen. Nothing like it appears on the test — there, the previous panel is simply the panel to the left, and you hold it in your eye.

Flat sheet (never shown)
Fold 1
Fold 2
Fold 3
Teaching overlay only: the same walk with each panel's PREVIOUS outline added as a second dashed line. Items never draw this — the comparison it makes visible is one you do by eye.

The punch: one open circle, on the last panel only

The punch is drawn as a small open circle — a ring with nothing inside it — and it appears on the final panel only. Earlier panels carry no punch mark at all, because the punch is made after the last fold. Its position on that panel is the one piece of information no answer grid can give you.

The same glyph means opposite things in the two halves

This is the trap worth memorizing. An open circle in the fold panels marks the punch. An open circle in an answer grid marks a position with no hole. Holes in the answer grids are dark, filled circles.

So the same drawing — a small empty ring — means "punched here" on the left of the item and "not punched here" on the right of it.

A
B ✓
C
D
E
The same item's answer grids. Here the open circles are the unpunched positions and the dark circles are the holes — the opposite reading from the fold panels.

The glyphs never mix: fold panels use the open circle for the punch, answer grids use filled circles for holes and open circles for everything else. Once you know which half of the item you are looking at, the meaning is unambiguous — the mistake only happens when you carry the reading habit across the gap.

The takeaway

Read left to right, one panel per fold, and remember the flat sheet is never shown. The solid outline is the paper as it is now; the dashed square is the original square, unchanged in every panel. No crease is drawn, so you find each one by comparing a panel's solid outline with the outline before it. The punch is a single open circle on the last panel — and an open circle in an answer grid means the opposite thing.

Practice Questions

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