For adults: box knife with a jig consisting of a fence and stop block

For children: auto-retract safety knife and add a second fence to keep the blade enclosed

A child learns nothing but dependance on stupid gadgets from the device in the OP.

Cutting carboard with scissors? It can be done, but it’s a chore amd the results are poor. I wouldn’t wish it on school children.

Your tools probably suck.

Any knife and straight edge is faster and easier. Any warehouse worker knows this. Any compost bin is better than cat scratchers. Any environmentalist knows this.

For scissors I recommend Fiskars titanium nitride. Just yesterday they gave me a nice curve in 1/16th aluminum. Cardboard cuts like a hot knife through butter. And, I bet they cost less than the materials used in the tool in the OP.

Box knife reco: any metal housing without an auto-retract safety feature but with a retractable blade

Knife reco: Morakniv Companion: cheap, sharp, extremely versatile.

Aviation snips reco: Klein J1102S will take 12" cheater bars and be fine

Fence: use a metal level instead of a metal ruler to prevent mistakes

Learn how to make a jig for speed and accuracy in any repetive cutting task.

I mean that’s kinda the whole deal with 3d printing, it’s useful for really niche applications where you can just add a small amount of convenience to your life.

Is it? All I ever request to be printed is the proprietary part that prematurely broke as it was designed to do.

Someone else commented about this being good for school kids

Instead of teaching them to use scissors? We’re raising a generation that can’t think or do for themselves. They’re reliant upon consumption.

as a cat owner with a constant pile of recycling I can see this being actually useful

As an adult you think it’s more useful than a box knife? It’s not even going to be faster than a box knife with straight edge. And, why do you need a product to pet your cat?

You’ve designed a niche solution to a problem that doesn’t exist.

Use a box knife. Or, for a more versatile tool, get a Morakniv Companion.

Seeing the ban coming, they financed and suffered alpha and beta of the Lemmy platform we all enjoy. Then, they chose to become the most GLBTQ+ friendly destination on the internet.

As it’s always been, they cope with the horrible events with satirical, sarcastic humor. And, in the middle of that will be a well-reasoned, nuanced, and quite serious post.

But, perhaps the part I like most is the struggle sessions. The entire community will heavily focus on a current topic, then hash it out with good faith discussion.

Their shit isn’t convenient or comfortable. It’s not easy to understand. And, I fucking love them for it.

edit: Lazy coders need choose a randomized target value and timing or be a moderator to avoid detection by the user. Perceiving is easy when your code is trash. Ask for help from an industrial engineer.