this post was submitted on 26 Jan 2026
166 points (99.4% liked)

3DPrinting

21135 readers
37 users here now

3DPrinting is a place where makers of all skill levels and walks of life can learn about and discuss 3D printing and development of 3D printed parts and devices.

The r/functionalprint community is now located at: or !functionalprint@fedia.io

There are CAD communities available at: !cad@lemmy.world or !freecad@lemmy.ml

Rules

If you need an easy way to host pictures, https://catbox.moe/ may be an option. Be ethical about what you post and donate if you are able or use this a lot. It is just an individual hosting content, not a company. The image embedding syntax for Lemmy is ![](URL)

Moderation policy: Light, mostly invisible

founded 2 years ago
MODERATORS
 

Article: https://tg.la7.it/cronaca/bolzano-coltelli-stampante-3d-a-scuola-denunciato-minore-26-01-2026-251562

Local student arrested for 'manufacturing weapons.' In reality, he printed some PLA shivs that would probably shatter if they hit a piece of parmesan cheese. The police seized the printer like it was a meth lab. 10/10 for the dramatic crime scene photo, though.

(Backstory: a few weeks ago a student in another city/school was stabbed with a (iron) knife and died so now politicians need to show that zero tolerance policies are successful.)

top 50 comments
sorted by: hot top controversial new old
[–] entwine@programming.dev 62 points 2 days ago (4 children)

I don't get it, are knives illegal in Italy? What if I want to cut my spaghetti?

[–] NaibofTabr@infosec.pub 70 points 2 days ago

What if I want to cut my spaghetti?

[–] squaresinger@lemmy.world 63 points 2 days ago (2 children)

This is the really weird thing. If these knives were made of metal and in a kitchen drawer, nobody would think of them as being weapons. But since they are 3d printed, that's novel enough to warrant some panic or something...

[–] ExcessShiv@lemmy.dbzer0.com 11 points 2 days ago (1 children)

Not sure how rules are in Italy, but where I live "switchblades" and other one-hand operated collapsible knives are illegal.

[–] Jocarnail@lemmy.world 7 points 2 days ago (1 children)

Afaik, all single hand operation deployment knives are illegal in Italy. It's somewhat of a nonsensical rule when there are teenagers stabbing themselves with kitchen knives, but still...

[–] ExcessShiv@lemmy.dbzer0.com 2 points 2 days ago* (last edited 2 days ago) (2 children)

You can make surprisingly sharp objects, I once cut myself with my printed bed-scraper by accident.

These printed knives can absolutely also be used to hurt/kill someone, if you wanted to...like all type of knives and basic cutlery really...these being an illegal type is the trigger here I believe.

[–] Test_Tickles@lemmy.world 1 points 7 hours ago

Let's just hope that the politicians never realize the danger of sharpened sticks or they might ban trees and bushes too.

[–] Jocarnail@lemmy.world 1 points 2 days ago

Of course, I never intended to imply that a plastic knife would not be dangerous

[–] Jocarnail@lemmy.world 6 points 2 days ago

It's not because they are 3d printed. He was distributing them at school! That is the problem.

If he were to file down toothbrushes and do the same he would still be arrested and his files confiscated.

[–] JohnEdwa@sopuli.xyz 17 points 2 days ago* (last edited 2 days ago) (5 children)

Spring assisted switchblades are illegal in quite a few countries, so I imagine they are in Italy as well. Still completely ridiculous, as these are plastic toy replicas, and not actual knives.

[–] NauticalNoodle@lemmy.ml 7 points 2 days ago

most of those classic stiletto switchblades are manufactured in italy

[–] teft@piefed.social 3 points 2 days ago (2 children)

Often even unassisted switchblades are illegal. They're called gravity knives.

[–] FuglyDuck@lemmy.world 12 points 2 days ago (6 children)

Just to be pedantic, gravity knives aren’t switchblades.

They have a blade that slides freely (and under the force of gravity.) the grip is basically a hinged nutcracker that, when closed, traps the sliding blade either deployed or retracted.

In any case, they’re no more dangerous than your standard folding knives of the same general proportions.

The illegality of certain knives (switch blades, gravity knives, balisongs, etc) are largely not based on the danger or actual use of those knives as weapons.

In the US it’s usually reactionary and racism.

[–] Imgonnatrythis@sh.itjust.works 1 points 2 days ago (1 children)

In the US knives sales just cut into gun sales so best to put some limits on them. I don't doubt that it may somehow play a part, but I am curious how racism plays in here?

[–] FuglyDuck@lemmy.world 4 points 2 days ago

So, I'm going to preface this with a quick reminder that once deployed, a folding knife is going to cause the same kind of wounds as a fixed bladed of similar size and shape. and example for this is the Benchmade Adamas family. They have a folding knife, an auto-opening folding knife and a paracord wrapped skeleton-grip (with paracord,) fixed bladed knife.

Once deployed, the knives are all going to do about the same in a fight. And the two folding knives- the auto, and the manual knife- are going to function basically identically. In Minnesota, the only one of these that's illegal to carry is the auto. The only reason that's illegal to carry is because of perception. (the same perception as switchblades.) There's no practical reason that auto-opening knives are any more likely to be used in some kind of crime than manual-opening folders.

Back in the early fifties, switchblades were frequently used by youth gangs (west side story, for example,) or rough-and-tumble types (especially in cowboy or war movies,) as a sort of visual code to indicate they were of rather dubious character. eventually that became associated with black guys being villains, because hollywood never met a trope it didn't like. even when the villain was white, or whatever, that was broadly overlooked by popular culture.

It was outlawed in '58 largely because people perceived it at the weapon of choice by black men. it had nothing to do at all with knives themselves being particularly dangerous. or even all that common, really.

the same is true of asian martial arts movies and balisongs. (which is ridiculous. the only thing a bali should be used for is as a slightly more exciting fidgit spinner. Sorry.)

Or brass knuckles (relating to the italian mafia and irish mob. hollywood gave those to the enforcers.)

This isn't to say that maybe knives and brass knuckles and things shouldn't be regulated. But outside of "Knives larger than x length", and the occasional feature like double edges or spear points (Which are bad for general use, and usually purely for a weapon, not a tool); there's always some other reason for it being outlawed.... and generally that reason is that "the wrong people" are using them.

load more comments (5 replies)
[–] hector@lemmy.today 5 points 2 days ago

Like butterfly knives, many places in the us too. Ny for instance, cops are taught to flick knives open to be able to charge for knives no reasonable person would think fit the gravity description I read once.

[–] Fondots@lemmy.world 3 points 2 days ago

I don't know the knife laws in Italy, especially not for the specific part of Italy this occurred in

But often laws about switchblades and such have to do with carrying them, or occasionally selling them, but often just owning a switchblade and keeping it at home isn't really an issue

As far as manufacturing, I again don't know about the specific regulations, if there's maybe any kind of licensing or something needed, but I know for a fact that it is either not totally illegal to manufacture a switchblade in Italy, or they are *very * selectively enforcing those laws because there are some very well-known manufacturers of them based there (if I had more disposable income I've had my eye on a Frank Beltrame stiletto for a while)

load more comments (2 replies)
[–] turmacar@lemmy.world 8 points 2 days ago

Auto-translate is saying 'snap knife', but I'd imagine it's to do with it being deployable / spring loaded in some way.

[–] pineapplelover@lemmy.dbzer0.com 22 points 2 days ago (1 children)

But they didn't confiscate his kitchen knives?

[–] RagingRobot@lemmy.world 11 points 2 days ago (1 children)

Those probably have serial numbers and a whole tracking system lol

Did they take away his rocks too?

[–] Spesknight@lemmy.world 15 points 2 days ago (1 children)

Background: there was a student stabbed to death in Liguria (whole other place) and so media is going crazy about anything knife related.

[–] 100_kg_90_de_belin@feddit.it 11 points 2 days ago

The students were of Egyptian and Moroccan descent, so right-wing politicians are having a field day with the whole "culture war" shit

[–] Wispy2891@lemmy.world 33 points 2 days ago (1 children)

Poor guy even got his ams with four rolls of pla confiscated ☠️

I can't imagine getting a search warrant for toys in a teenager room.

[–] ExcessShiv@lemmy.dbzer0.com 3 points 2 days ago

3D printers are not really toys though, regardless of how ridiculous this arrest is. It's a tool, like a hammer or drill...nothing more, nothing less.

[–] empireOfLove2@lemmy.dbzer0.com 21 points 2 days ago (1 children)

I'm sure they'll be introducing legislation that makes owning your own means of production onerous if not illegal within a week or two. Can't be having citizens realize they can make their own replacement parts or consumer items!

[–] Stampela@startrek.website 3 points 2 days ago (1 children)

There’s a little nuance here, the kid was dumb enough to bring one of those to school, so some worry is warranted… some. Now as you can imagine this is going to have consequences, but as we do have functional gun control laws, it’ll be something inane. Probably won’t impact 3D printing at all is the upside.

[–] empireOfLove2@lemmy.dbzer0.com 6 points 2 days ago (1 children)

Italy is fairly rightwing and has been drifting more right over time. Don't underestimate their ability to not let a crisis go to waste!

[–] Stampela@startrek.website 2 points 2 days ago

Yeah, but we seem to like hampering the right to manifest, so I’m sure it’ll get thrown in the mix.

[–] sj_zero@lotide.fbxl.net 10 points 2 days ago

Hopefully someday these places make murder illegal so people can't kill others without violating the law.

[–] artyom@piefed.social 13 points 2 days ago (1 children)

he printed some PLA shivs that would probably shatter if they hit a piece of parmesan cheese.

How big of a piece of parmesan are we talking? Ever tried to cut into a wheel of cold parmesan? It's pretty tough. Meatbags are a lot less tough.

That being said, we learned how to make knives by smashing 2 rocks together like a thousand years ago, this ain't stopping nobody.

[–] Agent641@lemmy.world 4 points 2 days ago (1 children)

I can confirm it's much harder to stab a wheel of parmesan cheese than a person, but at least the cheese doesn't scream

[–] Evil_Shrubbery@thelemmy.club 2 points 2 days ago

Ok, I'm stabbing the cheese wrong then I guess.

[–] DaddleDew@lemmy.world 16 points 2 days ago (1 children)

That's performative. Sucks to be the student who will have his life ruined to be made "an example" out of.

The just d took a shortcut to filing a toothbrush. Those don't do shit a kitchen knife wouldn't do.

Next we'll all see more legislation to make 3D printer software monitor everything you make and auto-report anything deemed dangerous to the elite

[–] Bazell@lemmy.zip 14 points 2 days ago* (last edited 1 day ago) (1 children)

People who 3D print anime weapons replicas:

[–] Kolanaki@pawb.social 4 points 2 days ago (1 children)

The swing speed on Guts' greatsword is so slow, the cops have plenty of time to unload 2 maybe even 3 magazines into them, so they're not as dangerous as the faster DPS weapons like daggers and shivs.

[–] SpikesOtherDog@ani.social 2 points 2 days ago

Yeah, but in this case it's less a sword and more a lump of plastic.

[–] escapeVelocity@lemmy.ca 6 points 2 days ago

This guy will go to jail and start making knives for other inmates lol

[–] foodandart@lemmy.zip 8 points 2 days ago (1 children)

Wow. Going after letter openers now, are they?

[–] Jocarnail@lemmy.world 2 points 2 days ago

If you were to bring a letter opener to school and sell it to your friends you would still get a nice meeting with the police. The existence of the journal article is more related to the fact that a kid was stabbed to death in school last week, than to the fact that a dumb kid did something stupid and marginally related to his 3d printer.

[–] fonix232@fedia.io 8 points 2 days ago

To be perfectly fair, a proper wheel of Parmigianino Reggiano IS quite hard...

[–] dual_sport_dork@lemmy.world 2 points 1 day ago

Well, I guess if I ever move to Italy I'll be screwed...

[–] BuboScandiacus@mander.xyz 2 points 2 days ago

Those knives sure are dangerous

Hope they will soon ban these too and put their manufacturer in jail:

[–] modus@lemmy.world 1 points 1 day ago (1 children)

Another murderbot off the streets. Italy is safe.

For now.

[–] spitfire@lemmy.world 0 points 1 day ago (1 children)

They need to ban printer sales

[–] lightnsfw@reddthat.com 3 points 1 day ago

This is fucking dumb. I made a better knife than that on the bench grinder in my high school shop class. The teacher watched me do it (and immediately took it away).

load more comments
view more: next ›