Watchly Safety Review

Playing Card Machine Gun- Card Throwing Trick Shots

10:36 · 29.5M views · November 1, 2018

Minor FlagsReviewed June 2026

4Minor Flags

This video is safe for most kids and delivers a genuinely fun mix of engineering, physics, and friendly competition — though parents should note that cards are used to slice fruit and break objects, which is presented as cool rather than dangerous. Mark Rober's signature style shines here: the build process is explained clearly, real science concepts are woven in naturally, and the playful rivalry with world-record card thrower Rick Smith Jr. keeps the energy positive throughout.

Content Breakdown · 4 Categories

Engagement Baiting & Manipulative CTAsA little

The phrase 'Place your bets in the comments below' is a mild, playful engagement prompt inviting viewers to predict an outcome — it is not guilt-tripping, superstition-based, or coercive, and falls well below the threshold for manipulative CTA behavior.

See evidence (1)

“'Place your bets in the comments below' — a lighthearted invitation to predict a trick shot outcome.”

Realistic Violence, Threats & WeaponsA little

The video features a DIY card-throwing machine gun device used for trick shots; while cards are projected at speed, this is a novelty/engineering demonstration rather than realistic weapon content or threats against people.

See evidence (1)

“A 'card machine gun' device is built and demonstrated for trick shots — cards are thrown at high velocity but in a playful, engineering context.”

Playful & Fantasy ViolenceA little

The card machine gun is used for trick shots in a clearly playful, consequence-free context — cards are thrown at targets for fun and spectacle, which qualifies as mild playful violence with no realistic harm framing.

See evidence (1)

“A DIY 'card machine gun' fires playing cards at high speed toward targets as part of trick shot demonstrations — stylized and playful in nature.”

Low-Quality, Extreme & Stunt ContentA little

While the video features trick shots and a novelty DIY device, it is grounded in genuine engineering and maker content rather than shock-value stunts or disposable-item destruction; the score reflects only the mildest stunt-adjacent framing.

See evidence (1)

“Card machine gun trick shots are inherently a novelty stunt concept, but the engineering focus elevates it beyond pure shock content.”

What Parents Need to Know

This Mark Rober video is largely wholesome and educational, blending mechanical engineering, physics (Newton's first law, aerodynamics), and a fun head-to-head challenge. Kids will learn how a homemade card-launching machine works, why spinning objects are more stable in flight, and get a glimpse of CAD design and aluminum machining. The main thing to be aware of is that playing cards are shown slicing through fruit, shattering light bulbs, and popping balloons — all framed as impressive tricks rather than anything harmful. There is no bad language, no inappropriate content, and no sponsored segments. The video ends with a plug for Rick Smith Jr.'s tutorial channel, which is a straightforward, non-manipulative call to action. Overall, this is a high-quality, curiosity-driven video that most parents will feel comfortable watching alongside their kids.

Talk to Your Kids About

1Mark explains that spinning makes the cards fly straighter — can you think of other sports or toys where spinning helps something travel farther or more accurately?
2The video shows a machine competing against a human. Do you think machines will always beat people at physical tasks? What are some things humans are still better at?
3Rick Smith Jr. holds three Guinness World Records. What skill would you want to practice enough to become the best in the world at?
4Mark built his card machine starting with a CAD design. What do you think CAD (computer-aided design) is, and why would engineers draw something on a computer before building it?

Playing Card Machine Gun- Card Throwing Trick Shots

Protected Viewing

What's This Video About?

Summary: Building a device like this has been something I've wanted to do for a really long time. MERCH- They are soft- https://teespring.com/stores/markrober PLEASE CONSIDER SUBSCRIBING: http://tinyurl.com/MarkRober-Sub **************************************** I make videos like this once a month all year long while supplies last: CHECK OUT MY CHANNEL: http://tinyurl.com/MarkRober-YouTube FACEBOOK: https://www.facebook.com/MarkRoberYouTube TWITTER: https://twitter.com/#!/MarkRober INSTAGRAM: https://www.instagram.com/markrober/

Frequently Asked Questions

What age is this video appropriate for?

We recommend this video for kids aged 7 and up. The content is fun and educational with no language, sexual content, or serious violence — the only mild concern is cards being used to slice fruit and break objects, which is unlikely to be distressing for school-age children.

Is there any dangerous behavior kids might try to copy?

Throwing playing cards at high speed is demonstrated, and a tutorial channel is recommended at the end. While card throwing is a real skill, it requires practice and the speeds shown are not easily replicated by hand, so the imitation risk is low — though parents of younger children may want to discuss not throwing objects at people.

Is this video educational?

Yes, it's genuinely educational. Mark Rober explains aerodynamics, Newton's first law of motion, and the engineering design process (CAD, machining, motor mechanics) in an accessible and engaging way that doesn't feel like a lesson.

Is there any advertising or sponsored content in this video?

No sponsored segments or paid promotions are present in this video. The only promotional element is a friendly shout-out to Rick Smith Jr.'s YouTube channel at the end, which is clearly organic and not a paid placement.

Is the violence in this video a concern for kids?

The 'violence' is very mild — playing cards slice through fruit, pop balloons, and break a light bulb as part of trick-shot challenges. It is entirely playful and consequence-free, with no people being harmed or threatened at any point.

Who is Mark Rober and is his content generally safe for kids?

Mark Rober is a former NASA engineer known for science and engineering YouTube videos aimed at a general audience. His content is widely regarded as family-friendly, curiosity-driven, and educational, making it a popular choice for parents looking for engaging STEM content for children.