Waterjet cutter built with a cheap pressure washer 

Dude, do you have _any idea_ how refreshing it is to watch a video where the creator has a SOLID understanding of what they are doing AND can also articulate that information to the viewer in a highly effective manner without 10,000 "ummm's" and "uhhh's"? The bonus? No obnoxious distracting twinky urban electronica music. This should serve as a template for all other instructional/DIY videos. A++++++++

Other than getting the hose connector turned around (watch out for that one), the machine is simple to put together and use ru-vid.comUgkxfQauTxLT0JLSvqkq10rD79TU4k0Vz8zP . And very nice, too. I'm surprised at the power-it's more than we'll ever need, and we've not even used the most powerful setting yet.I've cleaned off a dirty concrete porch to get it ready for sealing, started to clean siding, and I know this pressure washer will be terrific for cleaning tools this fall.The only issue we had is we had turned around the hose connector, and it leaked. Once it was on correctly, though, we had no problems with the connection. Just remember that the end with the green knob goes towards the hose. It's obvious now what we did wrong, but not necessarily obvious at the time.

It's 4am and I just woke up from a dream where I had a 100m tower to pressurize water for water jet cutting. Did the math, turns out I'd need a 60km tower to reach industry level pressures, so that dream will stay a dream. Glad there is a diy proof of concept here, so at least I can get one now that I have the desire. Thanks for the video.

I bet you could put fine abrasive in the soap addition port and it’d give it a little more umph

Very well put together. Thanks for sharing sir.

if you turn your tip upside down and put it back in then a quick on off of the pump will clear the clogged tip. I run 2 water jets at work $380,000.00 for each machine.

That pressure washer looks like mike wazowski

Is the pressure relief valve really necessary at all if you no longer have a hand triggered wand that can shut off the flow? E.g. the open waterjet nozzle becomes the new pressure regulator. Unless, you need a pressure *regulator* to bleed off pump pressure because it would self destruct? If that's the case, is the nozzle "too small" or are we aiming for an intentionally small nozzle, say for a smaller kerf? Would it be easier / more efficient (especially for longer run times) to use a motor speed control to regulate pressure, assuming the pressure washer uses a universal motor?

That sunjoe looks like mike wazowski

What a smart cool guy

This is MARLON VITE. Thanks for sharing this high quality video. You have great skills, great narrative is one. it was hard locating your name. Normally normal people write it at the end lol. I thought that if I ever wanted to buy one would you guesstimate to customize one for me thus I know where to look for this genius in marketing as well. Lmk pls ; )

Almost better than sliced bread. XD

What do use your waterjet cutter for? This guy: i CUt BrEAd

Try cutting the bread with olive oil and use coarse salt for abrasive. Delish!

finally a way to slice bread for the modern man

"I wonder what would happen if I switched out the water with mercury"- Cody wonders aloud.

My present technique for producing soggy bread isn't nearly loud enough. This is perfect for me.

excellent! I bet that was a lot of fun to put together.

Am I the only one who things that pressure washer looks like Mike Wazowski from Monsters Inc?! @1:55

Its been too long. Good to see you back with a new video. Please don't leave us again.

You wouldn't catch my fingers anywhere near that!

Hi Cody, we have a waterjet at work that I have access to. If the tungsten carbide focusing tube gets clogged again, try removing it, and assembling it in UPSIDE down. Then run the waterjet without garnet. This can unblock the focusing tube sometimes. Thanks for sharing.

I've been pondering doing something like this myself, awesome to know it works! Someone could do well to make a conversion kit for this purpose. I'd like to see something with a narrower nozzle

High pressure butter jet for bread!!!! do it for the views!

"Yeah, we're running a bit over spec. Don't worry, though, I added a fan."

"Being behind a gun is typically safer than being in front of it"

No hmm's and ahh's.. Straight talk. And to the point. Great instructions and in depth information. Well put together. Thanks for the vid. Well done.

I love that you begin with a brief motivation, then show the results, and then go into a detailed explanation. Seeing the result at the start gets us up to speed and makes the explanation much easier to grasp. Cheers!

hey cool project couple of tips though. i used to work as a hydro-demolitions operator (18,000-20,000 psi handheld water jet for demolishing concrete) i noticed at the top of your jet assembly the hose from the pump comes in at a 90degree angle with the gauge above it. if you swap them around the water wont need to make a hard turn. in these types of systems reducing the number and angle of bends can greatly increase efficiency. i would also suggest a short hose (1meter or so) or at the least run the hose out in a straight line, if it needs to have a bend make it a nice wide radius. the result of bends etc causes friction in the movement of the water against the hose wall. in my experience when we operated our water blaster with a few too many bends, the water going into the pump would be ~10c(or average cold water temp) but the water coming out of the nozzle of the lance(gun) could be something in the order of 50c+ while at the same time having a noticeably lower pressure (and velocity). bare in mind most if the time we were operating the lance 80% of the hose would be submerged in the ocean. thus we went to considerable lengths to keep the 40meter hose as straight and bend free as practicable. cheers hope this can help obtain some improvement and efficiency

Miss your videos Ben! Thanks for still uploading even though life is crazy busy!

FOR REFERENCE: A ruby is just a sapphire. For whatever reason, red sapphires are called rubies. Signed - Former Sapphire Hunter

so i watched this whole thing and forgive me if i missed you mentioning this but: IF YOU MAKE THIS FOR THE LOVE OF GOD DO NOT PUT YOUR FLESH ANYWHERE NEAR THE CUTTING STREAM. not /just/ because it will cut you like it cut all that other stuff, which is obvious, but it will inject high pressure water and abrasives up into your hand and blood stream. At the local maker space here in SF they attach a medical warning card to the key used to turn on the machine because medical personnel are gonna need to know how fucked you are if you somehow end up putting your hand in the way of the stream. It was actually pretty worrying seeing your fingers so close to the cutting stream like that. you'd be so much better off if you only cut yourself with a regular blade or even a laser cutter but a water jet will fuck up your shit real bad.

Great video as always Ben! Had a good chuckle at the, "ups the pressure, pump starts to leak, pulls over 20 Amps part." LOL :^)

Really cool! What advantages are you shooting for out of a waterjet cutter vs. a laser? I was reading about the differences and was surprised at how nuanced they were.

This is awesome. I wonder what the cuts look like under your electron microscope.

The only channel where he tells and shows the end results within the first minute and *doesn’t do any sleazy dirty clickbait cliffhangers or titles like even our favorite channels like tech ingredients and practical engineering or medhi or NileRed do* . What a breath of fresh air this is. There’s nothing else like it. Except maybe AvE but that’s different lol

The water does play a very crucial role in itself actually. It serves as a coolant while simultaneously serving as a medium to accelerate the abrasive particles with. A friend of mine who works at a metal workshop that both had a laser cutter and a water jet cutter (heavy duty variant that they used to cut through stainless steel plates that were inches thick) has told me that you get more precise cuts at the microscopic level using the waterjet, because even a fine tuned laser cutter creates irregular burns in the cuts, that might not be noticeable to the naked eye, but will get noticed during quality control and assembly of the manufactured parts.

Loved seeing those high pressure fittings on something so commercial. At work, we call 3000psi "low pressure". Could have gotten away with SS NPT fittings. Also, take a look at Swagelok fittings for systems below 10ksi; really nice quality, no leak design, and no coning-and-threading the tubing.

Many _abrasive particles_ do damage to lung tissue, so using water to drive them also aids keeping them out of the air where they may be easily inhaled. *P.S., this is one of your very coolest projects ever. How I missed it is a bit of a mystery, considering I always eagerly watch all your videos.

"it would be nice not to have this thing rupture and spray water and shrapnel all over my garage..... and me" priorities XD

Hmm, what would happen if you cut bread with that water cutter, buu replaced the water with garlic olive oil 🤔

Imagine making this but reusing the original housing then forgetting about it and using it to wash your car

A new Applied Science video?! My day has been made!

Thank you for your time and effort in making this information available. I run a small fabrication shop and not even in a million years would I be able to afford a commercial machine. Thanks to you water-jet cutting seems within reach. I wonder if pressure could be increased by using a gasoline powered pressure washer?

This is the best thing since *dry* sliced bread

Perfect machine if you feel like you have just too many fingers

Great video. Actually, high pressure lines can be extremely dangerous. A pin hole leak could sever a limb or put an eye out! Remember you are cutting hard materials with this device.

Would love to see you create a CNC Setup, What do you think the chance of you doing that is?

hmm seems like a good summer project. I don't really have a need for one but the person with the most tools in the end wins...

A great deal of care is due around high pressure liquids. Around the cutting nozzle is obvious, but a pinhole leak in a hydraulic hose can be extremely dangerous. Don't ever search for leaks with your hands (or any other body part). Any injury from high pressure liquid systems warrant an immediate trip to the ER and likely emergency surgery. Jet injection injuries are no joke. Cool project idea, just worth the consideration in a safety arena that a lot of people aren't aware of.

I dont think the fan is doing anything for you. It could be causing a minor restriction of airflow. Other than that your project is pretty cool. Especially the part about the loader valve and cutting tip.

Why does the pressure washer look like mike wazowski?

Loved seeing those high pressure fittings on something so commercial. At work, we call 3000psi "low pressure". Could have gotten away with SS NPT fittings. Also, take a look at Swagelok fittings for systems below 10ksi; really nice quality, no leak design, and no coning-and-threading the tubing.

Awesome work. I could see that it work a treat for cutting tiles. A straight edge would be all that was required. Free forming could also be done for curves and holes etc. Tile cutting involves either the scratch and snap method or diamond wheels and heaps of dust. The pros use a water bath for the wheel but the machines are big and expensive. Good luck with your development.

Could you cut bricks and concrete slabs for a patio with this? Would save an aweful lot of dust getting in the lungs, I recently did this with an angle grinder and got covered in dust! Thanks!

I work for Hypertherm, which as you know owns Accustream. The beginning of this video had me cringing as I would never put my hands so close to the jet haha. In any case I really enjoyed this video and love what you did here.

As my old man used to say to me, (when I actually did something he liked).."your a smart F**K, you know that??" Laugh!! I haven't heard it in 17 years now..but I find it fitting for You after seeing this! Very cool you smart F**k, keep it up! Great video production as well...thank you!!😀

So basically the whole water jet industry is laying low so no one notices the technology they use is much cheaper than they claim. And their traditional customers don't mind paying a lot for production machinery so nothing changes. And reading the comments does a great job of keeping people away from experimenting with it.

Why does that pressure washer looks like Mike from Monsters, Inc...?

By outfitting your cutter to a CNC you've created a nice little business niche for yourself. Great job!

I'm curious how much that little computer fan is actually helping

Wooo, finally a new video! I'll watch it later, though. It *always* makes my day and brightens up the mood and since this one isn't ruined yet, no need to waste a perfectly good video. :D EDIT: Watched it anyway, I was too curious.

I keep thinking I should do this! I run a waterjet for a living so I have a surplus of discarded parts. Love the ingenuity, thanks for sharing.

I don't think the 12V PC fan helps cool a system which already has a 20A 120V motor with a fan system attached. If anything, it is blocking air flow.

Thanks for this video! For years I have wondered the specifics of waterjets, and also how low in pressure you can go. Your work answered so many questions. Thanks again!

“Compressed gasses are more dangerous than compressed liquids.” Tell the bread that.

Great work as always. You are a thorough and committed scientist and experimenter. Please be careful with that jet of water!

No one is gonna talk about how much that pressure washer looks like mike wazowski??

Awesome!!

"They only sell to existing customers, think about that statement for a second" laughed my ass off. That is so annoying though.

I have that same pressure washer. I might not build a water jet cutter but I sure as hell am stripping off the housing, what a bunch of wasted bulk to make it look cool!

Your SunJoe shopvac looks like a combo of Mike Wazowski a Minion and is pretty flippin' wild!

I LOVE this project and intend to copy you to some extent (if I document it - and I plan to - I'll definitely give you credit). I can't help but to be confused by the different prices for ruby and sapphire cutting heads, as they're the same material - corundum (which I doubt is new info to you, being FAR beyond me in terms of scientific knowledge. I only know that as a result of being a graduate gemologist in the jewelry industry). Sapphire is just the name given to every color besides red. I'd be curious if some of my old contacts for synthetic corundum could be a viable source. As you said, the material is surprisingly cheap. It's just a crazy durable material (only diamond is harder but corundum doesn't have the cleavage plane that diamond has. Sorry for the novel ADHD thought-vomit

What do you think about a tesla valve sand hose? I am wondering IF it clogs up really bad overcomplicating operation.. or it works and it's a genius solution for keeping the water out.

"Catches the bullet" Honestly officer we were just playing catch.

“Waiter my sandwich is soggy” “Dammit, Applied Science is in the kitchen again!”

Why would that dealer say that "We only sell to existing customers." So what is that supposed to mean? Do they plan to die with their last customer and be buried together? The statement is as much creepypasta as it makes any sense, if they sell to existing customers only, then how did they ever got the first customer? or the second customer, even?

Have you tried to cut steel? Particularly hard steel, speed is not a question, but cutting something that will loose it's properties if heated is?

Wow... This is the coolest things I've seen in a long time. I need to cut 1/2" to 3/4" thick glass sheets. Do you know if this machine can cut glass, even if really slowly?

that pressure washer be looking like Mike Wazowski from monsters Inc

awesome, you've just made accessible a 150k technology for under 500 bucks!

"This tool can cut hardwood... it can also cut bread!"

Hahahha the pressure washer machine looks like mike wazowski from monster inc.

building my new bread slicer now, thanks for the idea. :)

please make a follow up on this video 🙏

in the first shot the pressure washer looks like a one-eyed alien waving to you

1:51 damn mike wazowski really let himself go since i last saw him

Have you found the used abrasive material to be recoverable?

100% Mike Wazowski 1:53 You'll never unsee it!

1.7 gallons per minute = 0.028 gallons per second = 3.78×10^-3 ft^3 per second (0.018in/2)^2×pi = 2.54×10^-4 in^2 = 1.76×10^-6 ft^2 3.78×10^-3/1.76×10^-6 = 2140 ft per second 2140 ft per second = mach 1.9

I have seen hydraulic lines rupture and cut through a persons hand. Be careful around the hose

You could use that soap dispenser hose to keep that pan dry/empty!

That pressure washer looks like Mike Wazowsky

A great video, thank you for taking the extended time to put it together for all of us!

Am I the only one that sees Mike Wazowski in the pressure washer?

Whatever happened to people being reasonable? Using logic to see dangerous situations, weigh the risk, and then proceed accordingly? Why does everyone demand safety warnings on such obvious things now? Here we have an adult (with deep understanding of the operation and physics behind this process, not to mention the dangers) doing as he sees fit. Instead of being a clipboard warrior (as we call them in the industry) why don't you worry about your own safety instead of his. A huge amount of highly interesting and highly educational topics are continually being ruined for everyone else because some idiots cant keep themselves from pointing out a small amount of danger, or idiots misusing the information, or idiots trying to replicate the information and injuring themselves and then starting litigation because they did something stupid. Bring back the Darwin awards. Good job on your waterjet project, looking forward to seeing it evolve!

1:33 is that mike from monsters inc ??

And the water prevents dry sand from turning to a cloud of dust, making a cleaner work space and it creates a more parallel jet of abrasive. Thanks for sharing your research and experience in this. it is very interesting. It's great you have the interest to nut it all out and build a working model. I have often considered using one of the four cylinder pump unit for spraying various chemical mixtures on farms which are driven by a power take off from the tractor. Sadly the few units I was lucky in finding for me to have, got nicked out of my shed. Used for poisons or fertilized water mixes from a big plastic tank .. but what you covered is a real treasure to the guy that is going to do this build. Or buy an entry model. Much appreciated 👍

all i can think is how unsafe this is and how much i love it.

Garnet is much harder than the composition an average handful of sand you'd pick up off the beach.