well, it exists but it's for an old pda. If those are anywhere near as satisfying to use as an actual keyboard, I'd love to get one to use with my phone.

I don't think paper cups are quite that cheap. I know here's a retail markup but here's a link to Amazon-brand paper cups, 500 for ~$50, which would give more like $35k/day.

I think this one is the exact same as the gif. It's all aluminum. $66

Hi, my name's Gareth, I made the first one of those silly things. The other one was made by Moran Goldstein, a super talented artist and designer and actually a massive inspiration to me. In fact I'm pretty sure it was one of his designs that made me start learning 3D Design in the first place a few years ago. This will probably get buried, but I just wanted to say thank you. You put my work up alongside the work of someone I admire and respect and who was in fact a driving force behind my own creativity, not that he knows that.

You use what's called a spider die for your extruder.

It's not hugely dissimilar for how they extrude plastic.

Just a guess, but could it be used to sit on? It looks like it has little foot pegs/rests. Perhaps to sit a child on and pull them around the airport? Edit: [found it on amazon] https://www.amazon.com/dp/B07GRVPPTD/ref=cm_sw_r_cp_apa_i_Q894DbZNJ5H62)

I'm currently reading Command and Control: Nuclear Weapons, the Damascus Accident, and the Illusion of Safety, by Eric Schlosser, and I have NO idea how humanity made it out of the 1970s alive. Hoooly shit, what you think you know is just the tip of the terrifying ice berg.

A brand called "IWISS" on Amazon has fantastic crimpers like this for $20 - I have both their square (4 sided) one and their hexagonal (six sided) one and they are both work great and are comparable with much more expensive alternatives

I have a Palm foldable keyboard, and the way that thing works is amazing. It's one of the coolest things I own, and it's utterly useless because it only has an extremely proprietary Palm connector and nothing else.

Got $700? You can buy a real tourbillon from Amazon.

The watch in action: https://www.youtube.com/watch?v=JUverp4LggQ

For those of you curious, you can buy just the wafers on Amazon. You have to order a few kg at a time, but they are for sale. I think it's sold for people who make ice cream

Edit: link: https://www.amazon.com/Oreo-Wafer-23-1-Pound-each/dp/B00CHTYOKE

I would start by getting a receiver and downloading a simulation. It's a lot harder than most people may think. Once you're good at the simulator you can get a small quad for a low price. Personally I started with the Eachine Wizard . The receiver can be used on a PC using this

Actually, it appears to be this:

KitchenAid KSMSCA Vegetable Sheet Cutter, Metallic

https://www.amazon.com/Sunnytech-Stirling-Educational-Electricity-Generator/dp/B00LWWVNTW/ref=sr_1_20_sspa?crid=1KLYB9J6T6X89&keywords=stirling+engine+glass&qid=1570201877&sprefix=sterling+engines+gla%2Caps%2C256&sr=8-20-spons&...

Messy, yes, but $20.99 isn't that expensive. And you can always try to make your own.

Better start saving - you won't find a watch with a triple axis tourbillon for less than $100k. The Chinese company Seagull make the cheapest single axis tourbillon (i.e just rotation in one plane) for around 1k. If you want something a little more affordable then check out open heart watches or clocks - they're basically the central "beating heart" (hairspring and balance wheel) of this mechanism, without all the rotation gear, and they're usually less than $200. I think orient make the nicest ones, for example. Further, for less than $100, you can get one with a display caseback, which lets you see the whole mechanism - but that's far detached from this. People are working on 3d printing tourbillons, but due to tolerances they're basically just demonstration models atm, and run for a few minutes tops.

Nintendo started out making playing cards and still make cards that are completely unrelated to their video games

https://www.amazon.com/Nintendo-Japanese-Playing-Cards-Hanafuda/dp/B0009XJZFO/ref=asc_df_B0009XJZFO

Everyone who wants to know EXACTLY how and why this works needs to find a copy of Watchmaking by George Daniels, amazon.

This is THE book on watchmaking, the guy who wrote it invented the first new escapement in 100 years. The book is worth the read even if you will never cut a gear in your life, it's a lifetime of work distilled to 300 pages.

I think this *might* work, at least for face cleaning https://www.amazon.com/Compact-Engraver-Handheld-Engraving-Protective/dp/B07W8ZDNL6

Here's a similar bearing on Amazon, about $1k

FAG 1320K-M-C3 Self-Aligning Bearing, Double Row, Tapered Bore, Open, Brass Cage, C3 Clearance, Metric, 100mm ID, 215mm OD, 47mm Width, 4800rpm Maximum Rotaional Speed, 12900lbf Static Load Capacity, 32000lbf Dynamic Load Capacity https://www.amazon.com/dp/B007MFX7RO/ref=cm_sw_r_cp_apa_i_4yMfCbPG8TGDN

Looks like this: https://www.amazon.com/Cabinet-Invisible-Cabinets-Adhesive-Drilling/dp/B079MB62SB/ref=zg_bs_166865011_6?_encoding=UTF8&psc=1&refRID=QNJ7EZ7Z5RFDGYTQTJBV

~$1/ea, but I assume the guy in the video likes to make stuff anyway. Maybe he's making a secret drawer.

Calling /u/DeadlyRNG too

THIS IS A DROP SHIP SCAM ⚠️⚠️⚠️

The same figit spinner can be found on Amazon for $11 less with the exact same images. Do not order from this website. You will be paying almost double for a scam.

https://www.amazon.com/Anti-Anxiety-Spinner-Spinning-Relieving-Boredom/dp/B0774RJFC6/ref=zg_bs_17238450011_13?_encoding=UTF8&psc=1&refRID=9BKW6PFS6SW1P042Q84S

You're saying each drone costs $3. You cant even buy a tenth of a toy, remote controlled hover craft drone with that. For what you're talking about, it is at minimum what is known as the Switchblade, a kamikaze drone that crashes into enemy infantry and kill them. That costs $70,000 in 2016..

If you desire a drone F-35, with all the engine, sensors, stealth and weapon systems it would costs AT LEAST $50M. MQ-9 reaper costs $17M in 2013, and is not stealthy, not supersonic and cannot engage in air combat.

Bezos will send you one.

That was just a quick search. I want to use a high torque movement and 3d print my own.

If you would like one that will last a lifetime there are several like this: Apple Peeler and Corer by Cucina Pro - Long Lasting Chrome Cast Iron with Countertop Suction Cup https://www.amazon.com/dp/B0000DZ16W/ref=cm_sw_r_cp_api_i_UfzuFb070W4YV

Your link led me to an Amazon search for "Gaming Cockpit".

Result #8 was quite an eye opener!

Direct link to the item in question just in case the search changes.

I guess Amazon is so large they can't police all their listing properly.

As an unskilled user, this would take me a couple months to make using Blender if someone provided me the technical details and textures. It sounds like a more skilled person with commercial software like /u/Butler-of-Penises would take less time. I am not sure how much that is raw skill and how much of that is dealing with open source weirdness.

If you want to make something like this, try out Blender, its pretty fun and free.

The app on the iTunes app store: https://itunes.apple.com/ne/app/gun-disassembly-2/id436292998?mt=8

Here's an Android version of the app: https://play.google.com/store/apps/details?id=com.nobleempire.GunDisassembly2&hl=en

There's also a version of it that's a Steam game, called World of Guns: Gun Disassembly. But something to note with the Steam version (and the mobile versions might be the same way, but I don't know for sure) is that you either have to pay money to unlock the guns (except for the first one), or you have to go on every day to do the stupid "quiz" thing until you have enough points to buy all the models. (Also you get some points if you get as many achievements as you can on each gun)

There are also certain guns that can only be bought with "credits" which you need to pay money for, OR if you get the top score of the day with a certain gun in one of the "game" modes, you get one credit.

Not really a great model IMO, and for a long time you'll be stuck with very few guns, but if you enjoy doing the same thing over and over in one half of your screen while watching videos in the other half, then it isn't too bad. Or you could just pay money for it.

Lol, you just described the situation... counterweight and large pulley on motor. It requires relatively little power, just the amount to lift the weight of people inside plus overcome friction, plus the friction of the bearing with a ton of weight over the pulley. It is almost nothing compared to linear accel. You are taking a few tens of kW.

https://www.researchgate.net/publication/276949903_Lift_and_Escalator_Motor_Sizing_with_Calculations_and_Examples

A roller coaster is probably over kill, but close approx to having, say 6 cars with 6 people. Sure you aren't going to 60mph, but it is also straight up. Some of those are 10 to 100 times the power.

You can have a software version if you want guys for now.. go and download Algodoo for free, and download my Ball Control Modules Scene Infact I just recommend the program in general for people in this sub.

a mere duckduckgo: "!a spirited away bank" and bobs yer uncle

If you like stuff like this, you might like the book 507 Mechanical Movements

I think the online version of the book has animations like this

Here’s the link you lazy OP

USA Link: https://www.amazon.com/dp/B0774RJFC6/ref=cm_sw_r_cp_api_fabc_n3-SFb7N4KJ61

Canada Link: https://www.amazon.ca/dp/B08LBCH3V3/ref=cm_sw_r_cp_api_fabc_63-SFbJR2CDSB

Just search "large cabinet hinges" I'm finding a bunch.

Large concealed hinges can get expensive

Some others aren't so costly

Get a toothpaste key. It’s basically a thin metal tube with a slot cut down the length and a tab on the end. You slide it over the end of the toothpaste tube and roll the tube up around the key.

Growing up my mom always has one on the toothpaste. It worked really well with those older metal toothpaste tubes, not sure how well it would work with the modern plastic toothpaste tubes as they don’t retain their shape like the older metal ones did.

They’re cheap, so no harm in trying them ou.

Not sure if the link with be allowed, it’s to Amazon, but you can find them all over the place.

https://www.amazon.com/Sprocket-Fidgets-Stainless-Meditation-Gunmetal/dp/B08R717M3S/ref=sr_1_5?crid=2TZK8PZLDGVQ&keywords=chain+gear+spinner&qid=1654050122&sprefix=Chain+gear+%2Caps%2C98&sr=8-5

I found it and i am buying it

FXCOOLCT Hand Spinner Fidget Toy Novelty Nine Linkage Gear Spinner Fidget Toy Anxiety Relief Toy Gifts https://www.amazon.com/dp/B07142VD3H/ref=cm_sw_r_apan_i_WFJJAPA2410942DQ8KPR

You can buy it here for about $20.

Theres actually a fan that sits on top of a wood burning stove that uses heat convection to power the fan blades and push the warm air around a room. I always thought that was really clever.

Amazon...

Sakiyrmai Kids Race Track Car Adventure Toys, City Rescue Preschool Educational Toy Vehicles, Parent-Child Interactive Kids Puzzle Car Playsets for 3 4 5 6 7 8 Years Old Toddlers Boys Girls https://smile.amazon.com/dp/B0999NNQ9Y/ref=cm_sw_r_cp_api_i_3SR4JXFFPQM4SBDJZPD3?psc=1

I'm just a nerdy engineering enthusiast. A few years ago I actually bought an Atlas of the Four Bar Linkage, which catalogs the various movements possible with different bar length ratios and offsets.

This sort of thing (combined in interesting combinations is the basis of mechanisms such as the Theo Jansen walking linkage. I wanted to learn how to invent more mechanisms like that.

Sharing this purely for educational purposes. $30 on Amazon.

Here is a link for what looks to be the exact same in OP’s post

Newmind 1pc Magnetic Levitation Solar Motor Double-Sided Decor Gift https://www.amazon.com/dp/B09JZGRPMF/ref=cm_sw_r_cp_api_glt_i_HDYK3YE7F596VWE6PZRW

One of the problems Watt had and solved was copying the hand-drawn schemes so that the mechanics could them fabricate the parts. They developed blue-prints.

Ping playing robots have been made, but this isn't one of them. here's an article about it

The video was super well done, but these guys are animators, not engineers.

Relay gang

Play store link : Relay for reddit
Promo Video : Relay

Device information:

Relay Version: 10.0.398 Pro

Phone: Google Pixel 5 (redfin) Android Version: 11 (30) Device (product): redfin (redfin) Rom: RQ3A.211001.001

( ͡° ͜ʖ ͡°) ༼ つ ◕_◕ ༽つ ¯\_(ツ)_/¯ (╯°□°）╯︵ ┻━┻

it really does. If anyone else wants to know more about this check out 'the design of everyday things' by Don Norman, its a really neat book, and has pdfs floating around online too :)

Because mobile reddit sucks. I've been using relay for years.

Play store link : Relay for reddit
Promo Video : Relay

You can get some pretty cool mechanical engines from deal extreme, http://www.dx.com/s/steam+engine for example. I bought one of these for my nephew, but he was too heavy handed with it and it broke.

Chucks are more popular now because Nike has the ability to do things on the business and marketing side that converse just couldn't do. https://www.fool.com/investing/2016/07/29/why-buying-converse-was-one-of-nike-incs-greatest.aspx

Just getting more of the product or there in the public eye and a slight price increase will help with sales and popularity. I can tell you with certainty though, Chucks have always been popular, now they have a global push from a leading apparel company.

They use thermoelectric generators for driving a small electric fan

This almost looks like Algodoo actually, but might be something else.

Actually on second thought I don't think it is unless it's a different visual render (possible for saving CPU). Algodoo doesn't usually do too hot with this kind of particle count, still fun to play with though.

Simple math, or any set of dividers will do the same thing reliably for less money, and can scale better for longer uses.

Simple math, or any set of dividers will do the same thing reliably for less money, and can scale better for longer uses.

This is not a very good example of where it would be useful, but it's called a Tite-Reach and they really are super handy

When I was reading up for mine someone mentioned if there is one piece not to cheap out on, it's the crucible. The one I got is nice and still <$20. I have been far rougher on it than it should have taken and it is still fine. The smaller/thinner jeweler's crucibles are brittle AF.

Get a Merkur handle and Astra blades. For $.06 a blade, you"ll never use a dull one again. Also, you'll be buying & tossing a shit-ton less plastic.

Seriously. Make the change. You'll wish you'd done it sooner.

Can some recommend a good free CAD/CAM software that will allow me to create my own files for this:

2-in-1 5500mW Engraver CNC 3018pro-M Engravering Machine, GRBL Control 3 Axis DIY Mini CNC Machine Wood Router Engraving Machine with Offline Controll https://www.amazon.com/dp/B08312MSK2/ref=cm_sw_r_cp_apip_YysONoowfRRp7

I’m trying to engrave on aluminum and/or laser etch images onto aluminum and polymer plastic.

Isn’t something like this $9 on Amazon?

Maybe this is a super special axel or something, but it doesn’t seem worth someone’s time.

Got me one of these when rebuilding my fence since I was putting up every single picket not using shitty prefab panels.

https://www.amazon.com/Senco-DS332-AC-Corded-Auto-feed-Screwdriver/dp/B00IZ0573M

I use a PEX tube ratcheting cutter to cut electrical service wire. Makes a much cleaner cut, with a lot less effort. Like a perfect cut. This tool looks much harder to use.

Mine pivots Bar tilts up, roll goes on. Sure simple, easier than the spring tube, no tiny parts to break. Looks better than this plastic crap.

Moen DN4408CH Vale Pivoting Toilet Paper Holder, Chrome https://www.amazon.com/dp/B0053WTD30/ref=cm_sw_r_cp_apa_i_ftcbDbKK8JWNN

https://www.amazon.com/Dialogue-Concerning-Chief-World-Systems/dp/037575766X/ref=sr_1_4?keywords=galileo&qid=1557489385&s=gateway&sr=8-4

Discussion start with the most basic observations.

Caves of Mars (Falcon Gold Space Adventures, Vol 1) https://www.amazon.com/dp/0208021906/ref=cm_sw_r_cp_api_i_Kt-BCbGNK4C74

It’s $5, and was a little hard to find. I can’t find a digital copy, sorry.

I can't find the $60 watch I had in mind, but this one and several other Casio models feature the "atomic clock sync,":

Casio Men's WV58A-1AVCR Waveceptor Atomic Digital Watch https://www.amazon.com/dp/B001A5LKAS/ref=cm_sw_r_cp_apa_qNF6BbJQQT8QX

You might wanna try this:

Play store link: Relay for reddit

BTW I'm just a fan of the app, I didn't build it or whatever

On Android, Relay can change playback speed. Play store link: Relay for reddit

My laser has moly mirrors so I don't have any firsthand experience with copper. It might have something to do with the light wavelength, but I really haven't bothered to learn any more since my moly mirrors work great.

https://www.amazon.com/Copper-Reflection-Mirror-Engraver-40W-200W/dp/B01DP2HCW8

I had one of those. Had to sell it when we were taking care of my dad when he got terminal cancer.

I set it all up, put a piece of pine 2x4 in it and it was horrible. Fiddled with it, never got it working right. Moved on to other projects. Revisited it one day. Tried it on a piece of very hard oak. Cut like butter, clean & smooth surfaces inside the mortise. I was amazed. Sadly I didn't get to make anything with it before life happened.

Pro-tip from an amateur: cheap mortisers are like cheap beginners guitars. You'll spend forever setting it up, and it'll still be a piece of shit when you're done.

This is the one I had, and it was awesome: https://www.amazon.com/dp/B000J0UTL6/ref=cm_sw_r_cp_apa_-0u0Ab4TFF96B

looks like a variant of a Yeti or an Rtic cooler locking bracket.

> You could take multiple copies of this cube and connect them together to make bigger structures made out of cubes, Minecraft style.

I wonder how much more they could charge if other products were described as able to "tile 3D space".

Surprised at the number of "electricians" that use these things. For what you have to pay to get a mediocre quality pair you can get a much higher quality pair of these. They handle a bigger range wire gauge (both max at 22, anything above you should do by hand..) and do a better job.

http://www.amazon.com/gp/product/B0107H5FJ6/ref=as_li_qf_sp_asin_il_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B0107H5FJ6&linkCode=as2&tag=hobbwo-20&linkId=4JJA7NMIVCKK24WN

Reminds me of this clock we had growing up. And now finding it online and seeing how much it costs now makes me feel really bad about breaking it when I was a kid.

Better to kill the SawStop and blade than to lose a finger or worse. And the part of the StopSaw that gets destroyed is only $70.00 http://www.amazon.com/SawStop-TSBC-10R2-Cartridge-10-Inch-Blades/dp/B001G9MGZQ/ref=sr_1_1?ie=UTF8&qid=1436468314&sr=8-1&keywords=SawStop+TSBC-10R2

(I don't link well)