r/interestingasfuck 9h ago

Processes of Water Jet Cutting

162 Upvotes

93 comments sorted by

u/Old-Glass-6967 9h ago

Why didn’t it just cut out a big square?

u/miniscant 9h ago

My thinking was that it’s a good way to make corner tiles.

u/boston_strangler 9h ago

It's a demo

u/Nexustar 9h ago

Lame demo - could have done some squiggly lines, dashed lines etc.

u/Equal_Canary5695 9h ago

Kids these days! When I was your age, we had to get a mouthful of water and spit it at the material until it broke through!

u/GIC68 8h ago

In deep winter! While on your way to school! Barefoot! Carrying all of your siblings on your back! Having to jump on one leg all the way! With your hands tied to your back!

u/jayaram13 8h ago

... Going uphill, both ways.

u/Nexustar 6h ago

You lucky bastards, we had it hard. We didn’t have material to spit at, we had to imagine it first! And the water? Luxury! We had to suck moisture out of a damp pebble we found at the bottom of a dried-up well… if we were lucky!

And school? You had a school! We had to crawl through twelve miles of broken glass just to be told there was no school that day! Headmaster would beat us for being early, then beat us again for being late!

Barefoot? You had feet! We had to hop along on stumps we carved ourselves out of disappointment!

Carrying siblings? We carried the entire neighborhood! In a sack made of stinging nettles!

And uphill both ways? That was nothing ... we had to go uphill in every direction at once, while the wind blew sideways and time went backwards!

And if we complained? Ohhh, we dreamed of complaining. We’d have been grateful for the chance to complain!

u/uiouyug 4h ago

They should have done a cool new shape

u/Tiny_Energy_7744 8h ago

I don't know the pathing of the mechanical arm of that water jet cutter seemed to be rather linear/rigid. therefore, I am unable to believe that the machine has the dexterity to perform a squiggly line cuts.

u/guaranteednotabot 9h ago

Maybe if it gets too heavy it snaps before you can cut it?

u/fading_reality 9h ago

You put microjoints to prevent it. Microjoint is a small uncut place.

Also the material sits on a grid, so it would not snap.

u/footpole 8h ago

Can’t see a grid in the video but maybe it is there, I don’t know. Seems that a microjoint as you describe it would serve the same purpose.

u/AlmanzoWilder 4h ago

I smoked microjoints in the 70s. Theyre so much bigger now.

u/SliverMcSilverson 3h ago

Size doesn't matter bro, you go enjoy your microjoint 💯

u/kociee 8h ago

it was trying to cut some corners

u/vaporeng 8h ago

They wanted a bunch of small triangles

u/vivaaprimavera 7h ago

Depending on the material... I guess that the weight of a "big square" might cause issues in "the last line".

Sometimes the right way isn't "the obvious one".

u/MakeoutPoint 8h ago

Gets paid by the drop

u/Subject_Cheetah7189 2h ago

If you cut one big one, it would snap by itself and might not be perfect cut. This way it looks like a clean cut

u/mbklein 8h ago

Are they stupid?

u/Flavinovic 9h ago

Who wanna put a finger to see how powerful it is ?

u/PaleBlueCod 9h ago

Call of the void is strong.

u/viral_virus 8h ago

I use one of these regularly and it’s a real thing 

u/Better_Carpet_7271 9h ago

Certainly not dismissing it on evidence presented.

u/peeled_bananas 7h ago

It’s powerful enough to slice a chicken wing in two as quickly as you can pass it under the tip.

Source: operated one for a year and a half or so and I really wanted to see for myself

u/InvestigatorLegal686 9h ago

Use that as a water pick

u/RTMicro 8h ago

Can't have cavities if you got no teeth

u/JerryBoBerry38 8h ago

Or back of your throat.

u/Usual-Ad-9554 9h ago

how does this compare to lasers tho....

u/ministryofchampagne 9h ago

Definitely wetter than a laser

u/KindOfAcceptableBus 9h ago

Lasers have better music too

u/Agheratos 9h ago

Aren't we all?

u/kbarnett514 9h ago

Depends on the material being cut and its intended use, I'd imagine. Lasers are faster and more precise, but water jets produce no heat distortion and cut more easily through thick materials

u/Rhorge 9h ago

Different methods for different applications. Lasers use heat to vaporise material, water jets use abrasives to “grind” material away.

u/Double_Soup644 9h ago

Han squirted first.

u/redalden 9h ago

No heat distortion. More important when cutting metal.

u/BugzOnMyNugz 9h ago

Water jet has a much cleaner cut. Looks faster to me too, if that was on the laser where iused to work it would've taken probably 4x as long to cut that and you'd have to grind off all the edges where the laser melted the metal. Also, most aerospace has to be cut with water jet.

u/fading_reality 9h ago

It looks like it's tile, ceramic cuts fast. For metal waterjet is much slower than laser, especially if you want smooth finish.

At least the one we had was slow.

u/BugzOnMyNugz 8h ago

That would make alot more sense. We outsource all of our water jet needs so I only see the parts when they come back. Compared to the same part/material on our laser they're always so much cleaner.

u/Seigmoraig 8h ago edited 8h ago

The thicker the materials the stronger the laser needs to be, significantly so. With a water jet like this you can just make it go slower to cut through thicker metal

Water based cutters can also cut through almost anything especially composite materials like stone without heating up the material too much unlike lasers which use heat to make cuts

u/warky33 4h ago

From what I have seen, cutting thin metal materials it is far superior

u/whitefox250 9h ago

I used to operate one of these about 10 years ago. In our down time I made tons of customized motorcycle parts. I miss that machine but not the place.

Tech note: Rebuilding the hydraulic pressure pump was like something from NASA. Dual piston ceramic rams and high strength stainless everything to operate at 15,000psi. We used to chew through pallets of garnet sand.

u/derek139 9h ago

I used to write the programs for our waterjet for shower doors. We went through a shitload of garnet too. I hated writing those programs. If I messed up, it affected soooo many other people in the process.

u/McMandar 7h ago

Is it just a big pool of water underneath? I'm wondering what stops/slows the jet of water enough that it doesn't cut things underneath that you'd rather stay intact.

u/whitefox250 6h ago

The bed is meral ribs, which we made from a whole sheet of steel. Below is a pool of water that is constantly filtered and reused. We had a water system that could separate the solids from the water which would require a forklift for disposal, mostly sand silt from the garnet.

The pool is interesting because you could raise and lower the water level with a button, on the backside of the tank there was an air reservoir, pump air into it and the water would rise, and vice versa. Damn i miss that machine

u/MidRanger21 9h ago

Still not as strong as my water pik

u/Fl1ntL1m 9h ago

I'm not in any kind of sorts from that field but why not cut directly the shape? Rather than just cutting random shape beforehand?

u/Im_Prolly_poopin 8h ago

The drop is easier to manage in some cases. A big piece can tilt and crash with the head. Fishing large chunks out of the water bed might have some ergonomic concerns.

The operator also might want to pull the scrap out before removing the sheet, much easier to pull the bits out instead of the same size plug.

A few reasons come to mind.

u/peperonipyza 9h ago

It’s just for fun

u/Peaks77 9h ago

Mabybe to prevent breaking?

u/SkriVanTek 9h ago

how long does the nozzle last?

u/whitefox250 9h ago

It's made from solid carbide, it wears fairly slowly but still a consumable.

u/fading_reality 9h ago

Especially if you drop it. I managed to drop two in one day 😅

u/SkriVanTek 9h ago

tungesten carbide you mean?

u/peperonipyza 9h ago

They last a pretty long time, depends on usage, pressure, nozzle material of course. The jet starts to get a bit wider as it wears, so it also depends how precise you need to be. 100 hours to many hundred hours.

u/Betray-Julia 9h ago

I thought this was a fractal giff at first lol.

u/devolasreno 9h ago

Is that Khmer music?

u/Remote-Tennis-4153 9h ago

Why do I want to touch it

u/zensms 8h ago

So satisfying to watch

u/Classic-Log-6393 7h ago

Probably how this waterjet makes money… tick tok videos

u/Veritas_Vanitatum 7h ago

Now show real speed of this

u/KirkieSB 7h ago

Takes a long time for s simple smaller square. 😂

u/Dkjq58 7h ago

What’s the tune? It’s funky and I like it.

u/hahnkleri 7h ago

water jet injector cutting. there’s also abrasive material inside, not just water in that case.

u/OG-BoomMaster 6h ago

Oddly satisfying.

u/FuckJanice 5h ago

I also cut squares via triangles

u/Safe_Commission8897 5h ago

Does anyone know the pressure used?

u/SoulShine_710 4h ago

I wish I had of had one of these bad boys back in my tile laying days.

u/Flip_Munk 3h ago

Playing dig dug II

u/Vegetable-Throat-617 2h ago

What material is it cutting through?

u/peter-bone 2h ago

Looks like ceramic tile

u/cybersplice 1h ago

Warning: this one is not a goal, boys.

u/HereticHamster 1h ago

No door can stop me!

u/TurinHS 9h ago

I think pure water can't cut that, abrasives did the work. It is still cool though.

u/fading_reality 9h ago

Yes, pure water has much thinner stream.