The benchtop unit — a cutting head over a flat deck, with a pull-out drawer that catches the nibbled-out scraps.

A benchtop power tool that lets a small child cut cardboard by feeding it into a high-speed hole punch rather than past a blade. It is one of the rare kids’ products engineered from scratch around the danger it removes, not scaled down from an adult tool that still has the danger in it.

The ChompSaw is not a scaled-down bandsaw. Where a bandsaw or rotary cutter has an exposed edge that keeps cutting whatever touches it, the ChompSaw works “like a precision hole punch that runs at high speed”: a small punch oscillates up and down inside a metal safety guard, nibbling out tiny half-moon bites of cardboard while a pull-out drawer catches the confetti. The trick is that the mechanism only bites material thin and flexible enough to be pushed under the guard — a fingertip, a sleeve, or a lock of hair is too thick and too stiff to be drawn in, so the tool is safe to touch while it’s running. That single design decision is the whole product.

The problem it solves is specific and real: cardboard is the best free building material a kid has, and the tools for cutting it are all bad for a child’s hands. Scissors can’t turn a curve or cut a clean interior window, and box cutters are exactly what you don’t hand a five-year-old. The ChompSaw lets a child steer a sheet of corrugated freely in any direction — curves, notches, interior cutouts — at a bench, which is what turns a flat box into an actual 3D structure rather than a taped-together approximation. It ships with a hole-punch attachment and a scoring tool for clean folds, so the same station handles the three operations cardboard building actually needs: cut, pierce, crease.

What earns its place is that the safety is certified, not just claimed. It appeared on Shark Tank (Season 16) and is carried by the MoMA Design Store, but the load-bearing detail is the testing: the maker had it independently assessed against ASTM F963 and CPSIA in the US, CCPSA in Canada, EN71 and EN IEC 62115 in the UK and EU (CE and UKCA marked), and AS/NZS ISO 8124 in Australia. It cuts more than boxes, too — felt, craft foam, and thin fabric all go through it — while metal is explicitly off-limits.

The honest limits are worth stating plainly. First, the age rating: the find and the MoMA listing say ages 3+, and that is now correct — the maker recertified the tool from its original 8+, to 5+, and finally to 3+ after testing confirmed it met the youngest-child standard. The Amazon listing for the bundle still carries the older “Ages 5+” label, so ignore that number; the maker’s own current certification and MoMA both say 3+ (with adult setup and supervision, as with any power tool). Second, it is genuinely cardboard-scaled: it handles material up to roughly 3mm thick — about two stacked pennies — and thicker double-wall board has to be scored and packed down first, or it won’t feed. And third, the price is real: $249 at MoMA (members $224.10), which is a serious sum for a single-material craft tool. It is a lot to spend on something that eats boxes — but there is nothing else that lets a three-year-old do it safely, and that is the entire point.