Water Rocket Custom 3D Printed Gardena Nozzles
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- Опубліковано 29 сер 2024
- Full report and 3D Model Files: www.uswaterrock...
This week, we are demonstrating a new method for making Water Rocket components, which we have been perfecting over the past few years. We've recently completed testing on a custom high pressure nozzle, intended for use with garden hose quick release launchers. In this video we unveil our new manufacturing technique, as well as some features of our new nozzle design.
3D Printer: SeeMeCNC Rostock Max V2
Music Credit: Destructoid, by MK2, UA-cam Audio Library
Caution: You use this part at your own risk. We cannot guarantee the safety of this part due to the differences between printers and filaments. Always safety test parts like this and follow proper safety measures when dealing with Water Rockets. Use with adult supervision.
Hello, I am from the future,
We have 2 3d Printers in our classroom, YOUR prediction was right!
yup
I've been waiting to see 3d printers used in this hobby. Just seems to be so many custom parts needed that will never be mass produced.
You should see our 3D Printed Air-Start Mechanism! We've been tinkering with this for several years, we just got few up with paying Shapeways or i.Materialize to do the printing, and the long lead times it takes to get anything printed. We decided that when a good printer reached a certain price point, we would get our own. They can't do everything, but you learn to make models that the printer can print working around the limitations. It's a lot of fun.
USWaterRockets
Very nice nozzle design. That was some beautiful footage of your 3D printer in action. I can watch a 3D printer and totally lose track of time.
Thanks for the comment. It's amazing that this printer does such a good job on the threads. It was a risk taking on this project but it worked amazingly well. This printer is sweet, thanks for recommending it. We're doing some upgrades on the printer shortly. It's a great machine to tinker with.
Wow! You guys are really high tech water rocket scientists. Nice design :)
I've too have discovered a less tedious way for my gardena launchers; now I simply screw the gardena adapter on the bottle. Just find a suitable gardena adapter that you may barely screw a turn on your standard bottleneck. Then put the bottleneck in 70 - 90 degree water for a few seconds, repeteadly testing wheter the gardena adapter may be fully screwed on. A few minutes later, you'll easily be able to attach and deattach your gardena adapter on your water rocket!
Kevplaris - Do you have a video of this technique? I don't have a 3D printer and have been very frustrated trying other methods of mating Gardena nozzles to bottles.
@@tomcarnahan3898 No, but how I did it was that I used a pan/pot in the kitchen to heat some water, and put the bottle in. The plastic gets heated, and it gets possible to shape to the form of the PET-bottle to the Gardena adapter. Use your creativity, but don't get stuck doing it!
If you want it, I can make a video of it showing how to do it.
Wow, you nailed it. This video is absolutely stunning.
The shots from the 3D Printer are amazing, did you use a crane or a tripod?
Unfortunately we don't have a 3D Printer, but I'm sure many people who are interested in water rocketry have one.
Which material do you use for the nozzle? With how much pressure did you test it?
I would suggest you to make bigger nozzles with a diameter of 15mm as well,
because the thrust phase of a rocket with 15mm nozzle is much better.
Our own nozzles are made on a lathe by Batkiter (maybe you know him from the WRA2-Forum).
Another way to make an easy and reliable nozzle is to simply glue the bottle cap into the tap nut adaptor.
I hope you will continue to make awesome videos like this.
We're planning some new videos too, but they need some more time.
Cheers
Julian from Raketfued
Thanks for the comments on the video. We were so impressed by the printing technology that we thought it deserved a really special video for introduction. It is really exciting!
We don't expect that a lot of people will have a 3D printer, but we do know that a lot of schools have them so students can learn, and there are small shops called "MakerSpaces" or "HackerSpaces" popping up around the world where you pay a small fee to rent time on the tools in the shop, or donate to the shop in exchange for time. We did this to see various 3D printers in operation ourselves before making our purchase. To be honest, 3D printers will likely one day be as common as inkjet printers, and probably as inexpensive to purchase. We expect that you will see more and more people adopting them for water rockets and other hobbies in the coming months/years.
The nozzle in this video was printed with ABS plastic. We started with ABS because there are easy ways to remove the layered look (not shown in this video) to make perfectly smooth parts, if they are made from ABS. The parts look like they came out of a mold when polished this way. We also have made some from another filament called T-Glase, which is actually what they call PET plastic in the 3D printer community. So, we have PET bottles with PET nozzles, which seem even stronger than the ABS ones.
We tested the nozzle in the video to 200PSI. We didn't go any higher because the bottles we were using would swell up and burst at higher pressure. Yes, we tested them with exploding bottles several times too. One concern we had was that we had seen gardena connectors crack open when the bottle explodes. We exploded several bottles to see what would happen. The gardena connectors all survived with no damage.
Is there a standard 15mm gardena form factor? There are some larger size hose connectors we have found, but they are all incompatible with each other. Is there one that is common or widely available?
USWaterRockets
Yes, you're right.
3D Printers are not common yet, but there are a view water rocketeers who already have one. For example, we got a nice email with some pictures of a 3D-printed Phoenix 5 Parachute System in august 2014. I also have a 3D-printer at school. Which CAD programm did you use? Solidworks? It would be pretty nice if you would share the files for the nozzle. I have no experience with 3D printers yet, but I'm sure the school would let me try to print a nozzle.
The gardena "maxi-flow" system is common in Germany, it requires a 3/4" hose:
www.gardena.com/ca/en/water-management/hose-connectors/hose-connector-19-mm-3-4/
This is the fitting tap connector:
www.gardena.com/ca/en/water-management/hose-connectors/threaded-tap-connector-308246/
These components were also used in our latest tutorial.
Cheers
RaketfuedRockets we've been doing this since around 2006, mostly for small items, because we had to send the files away to 3D printer shops. back then a good parametric modeling package was thousands of dollars. We opted for a newcomer called "Alibre" because they had a free version that was nicely featured. In 2009, they cut the price of their "Personal" edition to $99 and we purchased that, to get some of the better features. Alibre was bought by 3D Systems in 2011 and they changed the name to GeoMagic. Alibre is sort of an Orphan because the "Personal" edition has not been upgraded, and it has such limited import/export options, that it is essentially only good for editing Alibre personal Edition files. But it does what we want, and we stick with it because we have a lot of time invested in developing strong bottle neck threads that print well on filament extrusion printers. The software does export STL files, which is all you need to print from, and as we stated in the comments above we plan on putting the files on our website once we come up with the right cautionary text (and probably some legal text saying people cannot mass produce our models and sell them to make money).
WWWWHHHHOOOOAAAAAAA!!!!!! You have got to sale these!!!
Interesting idea. Do you think there would be a market for these things? Maybe if enough people comment here showing interest, we'll try and get something going. Thanks for the suggestion.
how do you stop the water being forced out when the air goes in?
pj the air pump has a one way valve on it that is intended to prevent the air in the item you are inflating from escaping backwards through the pump. The same one way valve in the pump prevents not just air, but the water as well from going backwards in the pump. So when you connect up this system, some water will flow out of the bottle into the hose due to gravity, but cannot enter the pump. If this is something you want to prevent, all you need to do is lift the hose up so that the water level in the bottle is lower than the hose and since water does not flow uphill, it will stop right there.Once you start to put pressure in the rocket, the air pressure in the pump is usually enough to push the water back into the bottle and it will hold the water in the bottle.
I just took a normal one and added an extra hose gasket to the male end and screwed a normal coke bottle on it and it didn't leak at all.
The threads on gardena fittings don't mate to standard bottle threads properly, so if you use high pressure launches like we do, the gardena hose fittings will pop off when you fill it with pressure.
have you tried adding an extra hose gasket and screwing a coke bottle to it?
Good job!
Do you sell these items on EBAY? how much they cost 4 or 5 pieces of those already included with delivery to Portugal?
Hi, i am trying to do an experiment on how nozzle sizes affect the height of the rocket. Do you have any templates on nozzles with differing sizes?
Can you put a link to the STL file up now? no point in waiting until everybody in the world has gotten themselves a good 3d printer, some of us do, and I want to try this with my new carbon fiber filament.
David Gunnarsson If you go to the link in the video description you will see an article about the nozzle and the links to the STL file is at the end of the article. Have fun!
I live in Australia and I 3D printed one of your nozzles, but the thread doesn't seem to match Australian bottles. Can you make a program that fits Australian bottles?
+Algodude87 I was not aware that the threads were different in Australia. That seems contrary to what people have said because the "tornado tubes" people purchase online seem to work for all countries. Are you sure the problem is that the threads are different, or is it a calibration problem with your printer? If the nozzle is too tight, you can try increasing the scale by 0.05% increments in your slicer until it fits properly, or if the nozzle is too loose you can shrink it incrementally until it fits well. Another possibility is that the extruder is not calibrated and is over-extruding, causing all of the walls to be too thick, which can usually be solved by incrementally scaling up the print as well.
¡ Namaste 🙏🏽 ! :-) Stacie&i Hope You Are Having A Loving, Blessed, Happy, Healthy, And A "Live Long And Prosper"-Your-Selves Day... ¡ Happy 20-GrEighteen !
To Algodude87 The Viewer From Australia...To Be Clear, From A Earth-Physics Perspective, The Reason Their Threads Do NOT Fit-Work, Is Because They Are Using Threads That Are MADE FOR THE SOUTHERN HEMISPHERE...And, Every-One Knows, Due To The Coriolis Effect, That BOTH Threads And Water Are Reversed South Of The Earth's Equator...
{ Well, It Was Worth A Try ;-) } en.wikipedia.org/wiki/Coriolis_force#Draining_in_bathtubs_and_toilets
These Guys ALSO Seem To REALLY Know What They Are Doing...Down Under...Air Command Rockets
ua-cam.com/video/4r9gmLfpFTg/v-deo.html
Hope This Link Helps.
i Truly Re-Main,
j
ProtoRocketGeek
~€;-)
I have a proble, . who's the best, the gardena nozzle or the bottle hole?
Hi guys i have a problem.When i release the bottle from launcher the bottle doesn't fly up deviates left or right I think it's because of the center of gravity.Because the nozzle itself weighs and this moves the center of gravity upwards I haven't made a rocket yet, I'm just testing with a normal bottle how can I solve this problem ?
Very innovative to build your own water rocket nozzle(s) using a 3D printer, but cheap?
I don't know if you can by them in the US (probably you can), but recently I came across a very cheap commercially available nozzle for a Gardena launcher. These are (brown colored) nozzles, identical to the normal 9 mm male Gardena couplings, and are part of the 'Rockyman' water rocket sets. These are a lot cheaper (2 euros), and fit very well on homemade water rockets made from PET bottles (at least in Europe). If you replace the rubber O-ring on these nozzles, for instance with with a regular Gardena O-ring (1 euro), they work even better with a regular Gardena quick release.system.
However, I am really looking forward to the next couple of innovative projects. There a lot of other challenging aspects in building large high pressure water rockets, where a 3D printer can come to the rescue.
We're not calculating the 3D printer cost into the cost of the gardena connector, but we calculate the cost of each gardena nozzle that we print as slightly less than 25 cents (US). This is based on the price of a kilogram of high quality ABS filament, and the weight of the nozzle. If someone were to buy filament from a no-name supplier it can be 1/2 to 1/3 the cost we mentioned. Since we are still learning, we bought top shelf filament to make sure there were no problems as we learned. But the price we calculated with pricy filament still seems quite inexpensive.
Anyhow, we're really stoked about the forthcoming projects. We're pretty much convinced that 3D printers are going to be commonplace in a few years, and it is exciting to be conducting these experiments.
USWaterRockets The nozzles definitely look very very cool, especially with your own logo printed on it. How much time does it take to print one, a couple of hours?
AdeBruin We've played around with different slicers and different speeds. We found we get the best results in the threaded area by going very slowly (20mm/s or less extrusion speed, and 0.1mm layer thickness). It takes about 2.5 hours to print at that speed, but our printer has a nice display panel that will override the settings of the G-Code and so what we tend to do is print the threaded area slowly and then speed the printer up when it completes the threaded base. The top part has minimal overhangs, except for the upper edge of the small o-ring seat, which we then slow down the printer again and it gives better overhangs at the slower speed. Messing with the speed while printing can cut 30 minutes or so off the print time. Oh yeah, and we print with 100% infill for a totally solid part, for maximum strength. It might be possible to use less infill and still get the strength for most applications. That would speed it up considerably.
You should sell these bottle attachments. Seriously for those of us who do not have access to a 3D printer. You could supply us with our rocket needs. I'd for sure buy them. If you don't to make them and sell them than can you steer us in the right direction of where we can buy them?
Sincerely
A water bottle rocket Wanna be
I asked a friend to print this for me but the cap top was leaking. Probably the printing setting. Imma try again tommorow.
Are you selling the nozzles? I'm sure many people would buy them.
It would help you re-coup the cost of your 3d printer.
bobnoxious1983 We're working on a way to make these available to everyone. Please stay tuned for an announcement coming shortly. Thanks!
Doesn't the print leak due to imperfections in the filament?
WHY isn't there high pressure water Rockets on the market...I dislike that most water Rockets are made from scratch...
It's almost certainly because of the risk of explosion. There is a long list of compressed air powered toys that have been recalled or taken off the market because of safety regulations which were created in response to someone defeating the pressure limit on the you and getting hurt when it bursts.
wont water go down the barrel so you have to be quick?
What size o-rings did you use?
The bottle seal is a #213 O-ring, and the gardena seal is a #111 O-ring.
Where can I buy these water rocket gardens nozzles? Likely in a batch
Where can I buy these water rocket gardena nozzles? Likely in a batch
Does it match all bottles threads ?
+Emilio lazcano In the U.S. we have one thread type for 22mm opening bottles for carbonated beverages. There was a short period where small capacity 22mm opening bottles had a different thread size, but those bottles did not stay on the market long (2009-2010) . The best way to know if a particular bottle is compatible is to find out if it works with the common "Tornado Tubes" that are available for schools to use in science experiments. These nozzles have the same thread size as a tornado tube. Other than that, we cannot reliably know what size bottle threads are used in every country, so we always suggest checking the tornado tube and using that as a confirmation these will fit.
where can i get the orings
Hello USWaterRockets. This is quite interesting as we have recently bought a 3D printer at school and I have been creating some parts for my D&T project with it! Our 3D printer uses .stl files. Do you happen to have a copy that I could try out for the nozzle? It would be quite cool to 3D print the same component on the other side of the world! Awesome work and I can't wait for more!
Yes, we're going to set up something where people can download the STL files and use them. We've got to write some cautionary text about how 3D printers are not all created equal, plus printer setup and calibration and configuration all can change the quality of a print, so "your results may vary". We need that just so we don't get a lot of people with really crappy printers or using cheap filament and having failures due to delamination or other issues and blaming the models. This is really experimental technology at this point, but it is rapidly getting better. In the not too distant future, there will probably be much tighter tolerance between printers.
USWaterRockets I see, that is a very good point. This type of project will revolutionise practical hobbies as we can all design parts for each other when the technology gets more popular and simply print them out! What CAD software did you design the nozzle in? That really is a great skill.
JSB Rocketry We mentioned in a comment thread in this video to Raketfued that we use a program called "Alibre" for our models. If you look at that comment you will see how we came to use this software and some discussion points about it.
One day, all the online tutorials for making things will go away and be replaced by links to STL file downloads. :-)
A lathe is an expensive tool. Of course a 3D printer isn't
3D printer £150, Lathe with thread cutting £500 upwards.
@@mfx1 But, will a cheap printer do anything but waste your 150 L's?
@@mikemakuh5319 No, An Ender 3 can be had for £150 in the UK and is an excellent printer.
must ask: I have not the way andor skill to make nozzles, like 5mm,and or 9mm noz, can you make ans sell?
I've done product manufacturing and distribution in the past, and found it financially rewarding, but very taxing on my limited time, so in situations like this I supply the model for free and anyone can download it and print it themselves or send it to one of the services that will print things for you. There are many printing shops that will do that, so it lets me enjoy designing and sharing and not worry about selling and taxes and all that.
Good nozzle design, but the 3D printer must be expensive I guess.
It all depends on your perspective. There are some small 3D printers available that cost $300-$400US. There are kits for them that are even less, and less yet if you buy the materials and make it all yourself. It depends on how big the printable area is, really. Some people have made small ones that would still be large enough for these nozzles from spare computer parts (taking motors and bearings from CD drives) and that would be super inexpensive. Contrast that with the price of a lathe, or try and build a lathe yourself and see what that involves.
But this is today. Remember at one time a laser printer was $3000 and a 10MB (yes, megabyte) Hard Drive was $1000, and a 40" LCD HDTV was $1600. 3D printers will follow the same cost curve as the technology is perfected and mass produced. Lathes have been around for over 2500 years and are so limited in comparison that they are never going to sell to a mass market, so they will always be overpriced. Unless you know of another way to make a nozzle with the correct threads that is less expensive, you're going to have to choose between a lathe or a 3D printer. For our projects, it's a no brainer, because a lathe can only make things that are round (except for a few hyper expensive ones) and we need to make rocket parts that are not round.
We're okay with eating the cost of something we know will come down in the future, so we can learn and share what we discover.
?????? you can buy an adapter from bottle to ntf for 1 dollar
Now I just have to try to find $1000 and I am set!!! Anyone got some old couches I can rifle through?
also whats this music, pretty dam cool
3d Model file?
can i get a few of those :)
***** If you click on the link in the description of the video you will find the directions and files you can download and print as many as you want. :-)