How to make a 3D printed knife? Are 3D printed knife products illegal?

How to make a 3D printed knife? Are 3D printed knife products illegal?

Published May 10th, 2022 01:48

People need to collect 3d printed knives but are still worried about whether it's legal or not? This is information about owning a 3d printed knife.

A 3d printed knife is also one of the many ideas they choose because the products still have a highly collectible shape but are much safer than real knife products. However, because it has the shape of a knife, there have also been unfortunate cases where there were assassinations right in the classroom. The question is how the knife is 3D printed and whether it is illegal to own it.

I. How to make 3D printed knife?

Build design drawings.

The idea of 3D printed custom knives was inspired by a very different approach to custom cutlery. They will start with crafting the chef's knife with a stainless steel blade and a special handle with the chef's help. At the same time, AMRC engineers have pursued finely crafted knives, starting with the clay mold of a chef's hand.

The scanned shape and the resulting cloud mesh are converted to CAD and used as the basis for the external topology of the handle. To show the potential of metal 3D printing, the team removed material from the hull and created an open, twisted handle. After 3D printing the prototype with an FDM 3D printer for the look and feel, the AMRC team moved on to simulation preparation and design.

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Simulation before creating 3d printed knife.

Simulating the AM design is a recent move by the AMRC engineering team, but we've been doing a lot of research over the last year or so. The AM knife is designed to be 3D printed from titanium alloy on the system. Renishaw AM250 Selective Laser (SLM) combiner.

Construction simulations show that the titanium blade can flex during printing using the selected orientation and automatic helper geometry. Thin structures cool too quickly, leaving residual stresses leading to deformation and cracking.

To solve this problem, we had to rethink the design of the entire building. Another engineer on the AMRC project, Abdul Haque, created this solution by adding material to the design only on the sides and not on the blade itself. This thermal coating does not even come into contact with the blade and is separated from the blade at a distance of less than 1 mm, but the proximity slows down the cooling rate of the blade.

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Heat cover and support for 3d printed knife.

However, the housing installation also poses additional difficulties, as additional material is supported during construction and must be removed afterward. It more easily solved this second problem by using the enclosure approach to contain the fleas during handling. However, support strategies are more difficult.

Instead of using a suggested or manually optimized support strategy to support the blades and shrouds, the team used PTC's Creo Parametric CAD software to design their structure. The knife holder and sheath have been fine-tuned with this tool to resist warping and warping. When the team ran this new build through the simulation utility (with a high-fidelity simulation lasting about 5 hours), They showed the risk of distortion to be significantly lower.

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II. Is it legal to use 3D printed knife from a 3D printer?

Yes, it is legal to 3D print a 3D printer. No law prohibits 3D printing from 3D printers. You need to 3D print the individual parts and then glue them together using super glue or manual force to assemble the design.

There are downloadable files online to help you 3D print your 3D printer, and there are no legal restrictions on the download.

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III. Law of 3D printing

Intellectual property issues

One of the key issues in this area is copyright and design rights. To print a 3D object, you need an electronic blueprint (or blueprint) of the object and a 3D printer. Anyone can use these tools to make an exact copy of an object. This can create a thriving black market for counterfeit goods that seriously jeopardizes the intellectual property rights of many. In addition, the use of 3D printers can seriously undermine the patent owner's monopoly.

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Product Liability

We used it to create weapons. If the private citizen downloads the weapon design file, it prints it and fires, and the weapon incorrectly fires due to mechanical failure and damaged users. Who is responsible for the defects of this product? Electronic design distributor? Printer manufacturer? Do consumer protection principles apply, or do product liability require 3D printing? The location is not clear at this time.

Is 3D printed knife illegal?

No, 3D printed knives are not illegal, as knives are a legal commodity. Many 3D printer users perform 3D printing without legal problems, such as letter openers, jackknifes, and barison. Avoid patented or trademarked knives as they may violate trademarks. 

Be careful to take them out in public according to local laws. There are no laws against 3D printer knives, but several libraries with 3D printer access classify 3D printer knives as weapons. This is prohibited.

The 3D printing library prints a 3-inch 3-inch knife that can print a 3-inch teen with a 3-inch teen. If the boy's parents think it's an age- and knife-related issue, they'll inform them that there's no problem from the age groups and the weapons classified as weapons. You can also see the 3D weapon and knife policy if you want to print a knife.

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IV. Favorite and often collectible 3D printed knife model.

Butterfly Knife Model 3D printed

The Butterfly knife is a model that many collectors want to own because its appearance and use create many emotions for the user. Especially gamers at FPS games are so used to Butterfly knife, and owning it for gaming and showing off to friends is always their desire.

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And of course, 3D printers can also do this when creating a model of this knife. The blade can be printed in two parts and glued together afterward (but with a vertical seam in the middle) or in one part without a seam (but I'm not sure what the best modeling orientation would be since the blade is too steep to be printed on its side, but you do).

Lucifer Maze knives model in 3D

Get inspired by the weapons of the Fallen Angel and become the lord of hell. This knife has a length that is usually 3D printed with a length of about 22cm for collection and in Halloween costumes.

Because of the unique base and only needing to print a single part and cut the supports, you can get yourself this knife that makes it the choice of many collectors on their shelves.

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3D printed Zuko's knife model

This is Zuko's pearl dagger from the nickelodeon series "Avatar The Last Airbender." The special feature of the knife will have a special inscription engraved on it "Never Give Without A Fight."

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Survival knife Subnautica 3D printed model.

Knife from the video game SUBNAUTICA 3D printed model Survival knife from the game SUBNAUTICA, there are four variants Knife size: H ~ 274 mm L ~ 51 mm W ~ 24 mm Model volume ~ 90 cm3 Depth: H ~ 274 mm L ~ 51 mm W ~ 24 mm of logo - 0.25 mm Model fully ready for 3D Printing.

For another Subnautica knife made from scratch, you have several options for printing it:

  • Symmetric a color stl "one - color - full," print it twice (one color is duplicated) and paste it.

  • One-color with thinner asymmetrical blade (can be used as envelope cutter) prints and glues "one - color - full" and "one - color - handle" patterns.

  • Dual color symmetry "double - color - full" + reflection, "double - color - handle - part2" + reflection and two decorative rings.

  • Thinner blades "double - color - full", "double - color - handle - part1", "double - color - handle - part2" + double, two-tone with two decorative rings.

You don't need to set up a multicolor extruder. Just print sections with different colored filaments. Options 2 and 4 shift the focus towards the handle, allowing you to rotate the knife with your fingers easily. You should print one of these.

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Red Hood Knife model 3D printed.

This is the Red Hood knife from Injustice 2. If you are a fan of Red Hood, you cannot miss this knife model. You can print it in one or two pieces. It is usually printed with dimensions 

  • width – 450 mm

  • height - 100.053 mm

  • thickness – 11.1 mm

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Batman Arkham knight Batarang model 3D printed.

One more character of the D.C universe is also very popular, especially his weapon. Batman's weapons and equipment are always collectible by fans, and among them are Batman Arkham knight Batarang. It is usually designed and printed with model dimensions:

  • width – 190 mm

  • height - 168.5 mm

  • thickness – 10 mm

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V. Summary

The 3D printed knife is easy to own and much safer than conventional knives, so choosing 3D printed models will always be the first choice. There are many different tool model templates available, and it is easy to obtain an STL file of the model. Do your research, and you should be able to get the model you want. And don't forget to keep safety in mind when using it.

They use a traditional PLA, or ABS filament 3d printed knife for a conventional design. It will be interesting to see how powerful this knife can be if 3D printed with materials like colorFabb's copper, copper fill, or even Proto's new PLA iron or stainless steel filaments. - Pasta. There will be interesting results if you try to do so, but please do not harm anyone else or yourself.

See more: 10 EPIC SWORDS INSPIRE YOUR 3D PRINTS - INCLUDING DANCERS BLADES