Splicing bottles allows you to build bigger water rockets. This tutorial demonstrates how to splice 2L bottles. For more details see: www.AirCommandR...
@promethium144 PL is not available in Oz and needs to be imported from the US. It only costs about $5 per tube. If you have friends or family in the US you could try asking them to send you some. You may be also able to find online stores that will ship it to you.
A quick thank you to and the Air Command Rockets site for the tutorial. The hot water dip to shrink the bottle evenly to make a slip joint a pretty slick idea. Again thank you. I always enjoy learning something new. - chase -
@MrTomcarnahan I always use a thick nail that I insert into the cartridge nozzle. The diameter of the nail is slightly bigger than the hole I make in the nozzle, so that when you force it in it seals around the edges. You normally have to use pliers to remove it again, but the nail leaves a nice channel inside the nozzle for the PL to come out.
Generally it's only been available in the US. Most hardware stores carry it there. Have you tried looking on-line to see if they will deliver it? If you can't get a hold of PL, try looking for any other Polyurethane based glue as these are the best glues to use on PET. But you would need to test the strength yourself.
We use Sikaflex 11FC as the sealant and PL premium as the glue that actually holds the splice together. PL can be porous, and so we use the Sikaflex to prevent leaks.
Are you asking about which glue we use? We use PL premium to hold the bottles together. The sikaflex is only a sealant and doesn't really provide much strength. PL is about 3 times stronger than PL. Search for PL premium construction adhesive on line to find a source for it. What glue did you use?
Has been injected into the water and pressure in the rocket that put some water in the tank of the launch pad, pressurize. When a problem occurs, open the pressure switch of the launch pad, from the rocket by decompression To collect the water and pressure.
Force is measured in Newtons. Pressure is measured in the following: mm Hg (Millimetres of Mercury), in Hg (inches of Mercury), PSI, Bars, and Pascals/Kilo Pascals.....not sure of any more. In physics, a force is any influence that causes an object to undergo a certain change, either concerning its movement, direction, or geometrical construction. In other words, a force can cause an object with mass to change its velocity (which includes to begin moving from a state of rest), i.e., to accelerate, or a flexible object to deform, or both. Force can also be described by intuitive concepts such as a push or a pull. A force has both magnitude and direction, making it a vector quantity. It is measured in the SI unit of newtons and represented by the symbol F. The original form of Newton's second law states that the net force acting upon an object is equal to the rate at which its momentum changes with time. If the mass of the object is constant, this law implies that the acceleration of an object is directly proportional to the net force acting on the object, is in the direction of the net force, and is inversely proportional to the mass of the object. As a formula, this is expressed as: F=ma (Remember it is a vector as stated below, hence direction must follow the value) where the arrows imply a vector quantity possessing both magnitude and direction. Related concepts to force include: thrust, which increases the velocity of an object; drag, which decreases the velocity of an object; and torque which produces changes in rotational speed of an object. In an extended body, each part usually applies forces on the adjacent parts; the distribution of such forces through the body is the so-called mechanical stress. Pressure is a simple type of stress. Stress usually causes deformation of solid materials, or flow in fluids. The SI unit of force is the newton (symbol N), which is the force required to accelerate a one kilogram mass at a rate of one meter per second squared, or kg·m·s−2.[46] The corresponding CGS unit is the dyne, the force required to accelerate a one gram mass by one centimeter per second squared, or g·cm·s−2. A newton is thus equal to 100,000 dynes. The gravitational foot-pound-second English unit of force is the pound-force (lbf), defined as the force exerted by gravity on a pound-mass in the standard gravitational field of 9.80665 m·s−2.[46] The pound-force provides an alternative unit of mass: one slug is the mass that will accelerate by one foot per second squared when acted on by one pound-force.[46] An alternative unit of force in a different foot-pound-second system, the absolute fps system, is the poundal, defined as the force required to accelerate a one pound mass at a rate of one foot per second squared.[46] The units of slug and poundal are designed to avoid a constant of proportionality in Newton's Second Law. The pound-force has a metric counterpart, less commonly used than the newton: the kilogram-force (kgf) (sometimes kilopond), is the force exerted by standard gravity on one kilogram of mass.[46] The kilogram-force leads to an alternate, but rarely used unit of mass: the metric slug (sometimes mug or hyl) is that mass which accelerates at 1 m·s−2 when subjected to a force of 1 kgf. The kilogram-force is not a part of the modern SI system, and is generally deprecated; however it still sees use for some purposes as expressing jet thrust, bicycle spoke tension, torque wrench settings and engine output torque. Other arcane units of force include the sthène which is equivalent to 1000 N and the kip which is equivalent to 1000 lbf. Pressure (symbol: P or p) is the ratio of force to the area over which that force is distributed. Pressure is force per unit area applied in a direction perpendicular to the surface of an object. Gauge pressure (also spelled gage pressure)[a] is the pressure relative to the local atmospheric or ambient pressure. Pressure is measured in any unit of force divided by any unit of area. The SI unit of pressure is the newton per square metre, which is called the pascal (Pa) after the seventeenth-century philosopher and scientist Blaise Pascal. A pressure of 1 Pa is small; it approximately equals the pressure exerted by a dollar bill resting flat on a table. Everyday pressures are often stated in kilopascals (1 kPa = 1000 Pa).
Yes you can. We found that because the PL bubbles when it cures and becomes a little porous. We've had a few leaks with the 2L bottles when using PL premium only and so we started using the sikaflex as a sealant and haven't had a single leak since then. Even though the PL leaked it always held the splice together.
Hi, We use both commercial tornado tubes bought from CoolThings Australia (can't post link here) and ones we make ourselves from 3/4" BSP irrigation connectors. The BSP ones are used on the higher pressure rockets, and the commercial ones on the lower pressure rockets.
It helps to strengthen the edge as well as making the bottle nice and round at the cut. Without the curl you'll find that the cut bottle is a little wavy and uneven. The rounded shape also helps with forcing the glue into the join as you press the two halves together.
@MrTomcarnahan The fairing is just made of two bottle sections that overlap about 1cm. You don't need a lot of PL for this. I assemble them on a cardboard tube to keep them aligned. The length I worked out by trial and error. I just kept cutting sections off until it was the right size. We have different lengths depending on type of bottles and whether they have reinforcing or not. You want the fairing to be tight when you tighten the bottles in the coupling.
Psi stands for pounds per square inch. The units are essentially force applied to an area. (in this case force measured in pounds and the area being a square inch) F=ma only refers to the force. A pressure gauge is used to measure pressure in psi.
Good question. The tape is used as a masking tape to make the splice look neater when finished otherwise you get the glue all over the bottle and it is difficult to remove.
We bought ours from CoolThings Australia. There are lots of them available on line from different suppliers. Just google for "Tornado Tube" and you'll find them.
@MrTomcarnahan Hi Tom, going beyond 4 couplings makes the rocket quite long and starts to be too flexible. Unless you use fiberglass for the bottles and fairings then you could probably do a couple more. The fiberglass provides extra stiffness. Each of these spliced pairs holds about 3.15L. How much water to add depends on a number of factors but 1/4 to 1/3 is about right. As long as the coupling has a larger diameter than the nozzle then you can pass water through them.
Hey gorge I just thought of what would happen if u made the tornado coupler by to bottle caps and u weld them to gather then drill the insides out in please try this
Thanks. :) Yes we have tried a Sikaflex only splice but it burst at around 80psi IIRC. This means you could only use it for launch pressures of perhaps 50psi. Sikaflex is just too soft. PL premium is 3 x stronger than Sikaflex 11FC. if you can get your hands on PL it will be worth your while. Wear gloves when handling it as it is very difficult to get off skin.
@fatpeople249er This indeed has been tried before. Dan from British Water Rockets has had some good success heat welding the caps together to make Tornado tubes.
@thunderrockets Oh okay. I'm not sure what the thread is, as it is unique to bottles. It's a non-standard thread, and is why you can't find components to fit. You can't easily get taps or dies for this thread either.
@AnCRockets What glue are you using? With PL premium cure time is very dependent on atmospheric humidity. We live in fairly humid conditions so after 5 days our splices are pretty much as strong as they can be. With these splices the bottle bursts before the splice does.
@pudresful For these particular bottles, the unreinforced one is 102grams and the one with the reinforcing is 136 grams. The capacity is around 3.15 L.
Question ,what did you use to to join the completed set of 2 bottles together you screwed them together what did you use please ?...I did not get that part ...thanks
The sikaflex here is used as a seal, so pretty much any equivalent polyurethane based glue that doesn't bubble should be fine. If you are using PL premium you may be able to get away with just that instead of using the two glues. Where we live it is humid and the PL bubbles while it cures which makes some splices leak slightly. Hence why we are using the sikaflex which doesn't bubble as the seal.
@Abalancedproduction Go to Google "Shopping" and type in (with quotes) "tornado tube" -- you will get a dozen hits. Without shipping, they cost around $2 USD. You can find info on them here on RUclips.
can u please tell me the exact name of the material which u r using here for joining the two bottles? and please tell me from which kind of shop i will get it ... like somewhere from the mechanic shop or from an electric shop?? please tell me m really upset i have made 4 bottle rocket with hardwork n spend 4 days on it and at the end it burst while experiment it did'nt bear even 40psi pressure :(
Wow! Now I can make some neat rockets that go almost as high as some of my 1700 foot launches! You are very skilled at water rockets, try actual model rockets though. not very expensive, 1700 foot launches.
Sikaflex by itself isn't very strong at all. The splice would fail at perhaps 50-60psi. We only use it as a seal because PL premium (which holds the splice together) can be porous.
well thanks alot :) i will search for it in all hardware shops and also on Internet :) Thanku so much .. i will contact later if i would find any difficulty in making this rocket :)
I'm wondering if acetone wipe, then wipe off in one direction with dry cloth might be a better surface preparation than sanding. Adhesive bonds are chemical, not mechanical, bonds. The surfaces must be free of oil or any other contaminant, to avoid weak layers in the bond. I'm not sure the surface needs to be rough as much as it needs to be clean. I know in aerospace bonding, sanding is seen as more operator-dependent than acetone wipe, because different people will sand differently. I also think it's recommended you solvent clean after sanding. But whatever works, I guess.
I believe sanding to some extent also cleans the surface exposing fresh materia underneath. I'd imagine it also creates a greater surface area for the glue to bond with. We only sandy it fairly lightly as we don't want to weaken the plastic too much. But I agree solvent cleaning after sanding can only help.
George ... maybe I missed it but I thought somewhere you mentioned how you keep PL Premium from hardening in the nozzle. I used my tube of PL Premium once, covered the tip with aluminum foil using a rubber band to keep it tight. When I came back a month later, the PL Premium had formed a rock hard plug in the nozzle that I had to carefully drill out to use the remaining glue. Can you recommend a better way so that the glue does not harden in the tip?
George ... at 14:26, you show a fairing that goes between the two spliced pairs. I tried that using the longest section of a single 2L bottle and it was not long enough. In the video, it looked like you spliced two sections together for the fairing. Could give some more detail on how you did that and what measurement you used to determine the final length of the fairing? Thanks!
muy buenos sus tutoriales. Nos gustaría saber como se llama el pegamento o adhesivo que usa para pegar las botellas.Le agradeceríamos que nos contestara.Saludos desde Rio Negro Patagonia Argentina.
And I was just going to use some gaffa tape lol ! Thank you for that its an excellent tutorial. Where do you get the couplers from ??? I think you called them "Tornado" or something like that?
George -- disregard my comment on your other spliceing video and thanks for making this one. You have made a 2 bottle pair that connects to another 2 bottle pair using a Tornado Tube. Have you found a practical limit to how many pairs you can connect in this fashion? With a 2 bottle/2bottle section (total 8 liters), how much water is practical (1/3 of the total or ~ 2.5 liters of water)? Do you want to have the water go higher than the the T-tube connection?
Hello, I am Taiwanese, you will make a model of grain rocket? I want to learn, but my English is not good, I use a translator to translate see Please reply me?? Thank you very much ~
Master's hardware used to sell in here in Oz, but I don't think they are around anymore. I would just order it through e-bay or Amazon. The brandname is Locktite these days, but it is the same adhesive.
@gk123434534 the splice fail and i let the glue cure for 1 day i dont use the same glue than you use because i live in canada and i dont find the same glue i buy this glue does it correct: find on rona.com Construction adhesive LEPAGE
@promethium144 PL is not available in Oz and needs to be imported from the US. It only costs about $5 per tube. If you have friends or family in the US you could try asking them to send you some. You may be also able to find online stores that will ship it to you.
A quick thank you to and the Air Command Rockets site for the tutorial.
The hot water dip to shrink the bottle evenly to make a slip joint a pretty slick idea.
Again thank you. I always enjoy learning something new.
- chase -
Thanks but we can't take credit for that idea. That had been done for many years by water rocket pioneers. :)
@MrTomcarnahan I always use a thick nail that I insert into the cartridge nozzle. The diameter of the nail is slightly bigger than the hole I make in the nozzle, so that when you force it in it seals around the edges. You normally have to use pliers to remove it again, but the nail leaves a nice channel inside the nozzle for the PL to come out.
wow. my friends were so impressed by the rocket. thanks for the splicing tutorial! it helped me a lot.
Generally it's only been available in the US. Most hardware stores carry it there. Have you tried looking on-line to see if they will deliver it? If you can't get a hold of PL, try looking for any other Polyurethane based glue as these are the best glues to use on PET. But you would need to test the strength yourself.
We use Sikaflex 11FC as the sealant and PL premium as the glue that actually holds the splice together. PL can be porous, and so we use the Sikaflex to prevent leaks.
Are you asking about which glue we use? We use PL premium to hold the bottles together. The sikaflex is only a sealant and doesn't really provide much strength. PL is about 3 times stronger than PL. Search for PL premium construction adhesive on line to find a source for it. What glue did you use?
@thunderrockets The commercial tornado tube threads match standard PET soda bottles, as that is what they are designed for.
Wow that was really cool, I wouldn't be surprised if this guy helped build the Space Shuttle.
Very professional filming and explaining. Awesome video.
This was a well done and informative video and I want to say thanks for that. I will be building my first rocket using this method.
Has been injected into the water and pressure in the rocket that put some water in the tank of the launch pad, pressurize.
When a problem occurs, open the pressure switch of the launch pad, from the rocket by decompression
To collect the water and pressure.
You could try alternatives like Tornado tubes or Robinson couplings.
is it just me or is this guy a perfectionist
Force is measured in Newtons. Pressure is measured in the following: mm Hg (Millimetres of Mercury), in Hg (inches of Mercury), PSI, Bars, and Pascals/Kilo Pascals.....not sure of any more.
In physics, a force is any influence that causes an object to undergo a certain change, either concerning its movement, direction, or geometrical construction. In other words, a force can cause an object with mass to change its velocity (which includes to begin moving from a state of rest), i.e., to accelerate, or a flexible object to deform, or both. Force can also be described by intuitive concepts such as a push or a pull. A force has both magnitude and direction, making it a vector quantity. It is measured in the SI unit of newtons and represented by the symbol F.
The original form of Newton's second law states that the net force acting upon an object is equal to the rate at which its momentum changes with time. If the mass of the object is constant, this law implies that the acceleration of an object is directly proportional to the net force acting on the object, is in the direction of the net force, and is inversely proportional to the mass of the object. As a formula, this is expressed as:
F=ma (Remember it is a vector as stated below, hence direction must follow the value)
where the arrows imply a vector quantity possessing both magnitude and direction.
Related concepts to force include: thrust, which increases the velocity of an object; drag, which decreases the velocity of an object; and torque which produces changes in rotational speed of an object. In an extended body, each part usually applies forces on the adjacent parts; the distribution of such forces through the body is the so-called mechanical stress. Pressure is a simple type of stress. Stress usually causes deformation of solid materials, or flow in fluids.
The SI unit of force is the newton (symbol N), which is the force required to accelerate a one kilogram mass at a rate of one meter per second squared, or kg·m·s−2.[46] The corresponding CGS unit is the dyne, the force required to accelerate a one gram mass by one centimeter per second squared, or g·cm·s−2. A newton is thus equal to 100,000 dynes.
The gravitational foot-pound-second English unit of force is the pound-force (lbf), defined as the force exerted by gravity on a pound-mass in the standard gravitational field of 9.80665 m·s−2.[46] The pound-force provides an alternative unit of mass: one slug is the mass that will accelerate by one foot per second squared when acted on by one pound-force.[46]
An alternative unit of force in a different foot-pound-second system, the absolute fps system, is the poundal, defined as the force required to accelerate a one pound mass at a rate of one foot per second squared.[46] The units of slug and poundal are designed to avoid a constant of proportionality in Newton's Second Law.
The pound-force has a metric counterpart, less commonly used than the newton: the kilogram-force (kgf) (sometimes kilopond), is the force exerted by standard gravity on one kilogram of mass.[46] The kilogram-force leads to an alternate, but rarely used unit of mass: the metric slug (sometimes mug or hyl) is that mass which accelerates at 1 m·s−2 when subjected to a force of 1 kgf. The kilogram-force is not a part of the modern SI system, and is generally deprecated; however it still sees use for some purposes as expressing jet thrust, bicycle spoke tension, torque wrench settings and engine output torque. Other arcane units of force include the sthène which is equivalent to 1000 N and the kip which is equivalent to 1000 lbf.
Pressure (symbol: P or p) is the ratio of force to the area over which that force is distributed.
Pressure is force per unit area applied in a direction perpendicular to the surface of an object. Gauge pressure (also spelled gage pressure)[a] is the pressure relative to the local atmospheric or ambient pressure. Pressure is measured in any unit of force divided by any unit of area. The SI unit of pressure is the newton per square metre, which is called the pascal (Pa) after the seventeenth-century philosopher and scientist Blaise Pascal. A pressure of 1 Pa is small; it approximately equals the pressure exerted by a dollar bill resting flat on a table. Everyday pressures are often stated in kilopascals (1 kPa = 1000 Pa).
Yes you can. We found that because the PL bubbles when it cures and becomes a little porous. We've had a few leaks with the 2L bottles when using PL premium only and so we started using the sikaflex as a sealant and haven't had a single leak since then. Even though the PL leaked it always held the splice together.
Hi, We use both commercial tornado tubes bought from CoolThings Australia (can't post link here) and ones we make ourselves from 3/4" BSP irrigation connectors. The BSP ones are used on the higher pressure rockets, and the commercial ones on the lower pressure rockets.
It helps to strengthen the edge as well as making the bottle nice and round at the cut. Without the curl you'll find that the cut bottle is a little wavy and uneven. The rounded shape also helps with forcing the glue into the join as you press the two halves together.
Great, go for it! The more tutorials that are out there the better. :)
Oi , instead of using tape , will it be better if I use silicon .
@MrTomcarnahan The fairing is just made of two bottle sections that overlap about 1cm. You don't need a lot of PL for this. I assemble them on a cardboard tube to keep them aligned. The length I worked out by trial and error. I just kept cutting sections off until it was the right size. We have different lengths depending on type of bottles and whether they have reinforcing or not. You want the fairing to be tight when you tighten the bottles in the coupling.
Psi stands for pounds per square inch. The units are essentially force applied to an area. (in this case force measured in pounds and the area being a square inch) F=ma only refers to the force. A pressure gauge is used to measure pressure in psi.
Good question. The tape is used as a masking tape to make the splice look neater when finished otherwise you get the glue all over the bottle and it is difficult to remove.
@aircommand waterrockets, Actually what i meant was the size , like 1/4" 3/8" or something like that
We bought ours from CoolThings Australia. There are lots of them available on line from different suppliers. Just google for "Tornado Tube" and you'll find them.
@MrTomcarnahan Hi Tom, going beyond 4 couplings makes the rocket quite long and starts to be too flexible. Unless you use fiberglass for the bottles and fairings then you could probably do a couple more. The fiberglass provides extra stiffness. Each of these spliced pairs holds about 3.15L. How much water to add depends on a number of factors but 1/4 to 1/3 is about right. As long as the coupling has a larger diameter than the nozzle then you can pass water through them.
Hey gorge I just thought of what would happen if u made the tornado coupler by to bottle caps and u weld them to gather then drill the insides out in please try this
Thanks. :) Yes we have tried a Sikaflex only splice but it burst at around 80psi IIRC. This means you could only use it for launch pressures of perhaps 50psi. Sikaflex is just too soft. PL premium is 3 x stronger than Sikaflex 11FC. if you can get your hands on PL it will be worth your while. Wear gloves when handling it as it is very difficult to get off skin.
We've tested them to 270psi without them breaking, but not sure what the max pressure is. I wouldn't recommend using them above about 220-230psi.
@fatpeople249er This indeed has been tried before. Dan from British Water Rockets has had some good success heat welding the caps together to make Tornado tubes.
Not sure, we have never tried it. You would have to test it to see how much pressure it could hold.
Ha ha good spotting. :) All filmed on the same day with one spliced bottle prepared a day earlier.
@thunderrockets Oh okay. I'm not sure what the thread is, as it is unique to bottles. It's a non-standard thread, and is why you can't find components to fit. You can't easily get taps or dies for this thread either.
Thanks for the advice ... I know I can always count on you for good info!
@bobilol24 It's called a tornado coupling or tornado tube. You can buy these for a few dollars on line.
@AnCRockets What glue are you using? With PL premium cure time is very dependent on atmospheric humidity. We live in fairly humid conditions so after 5 days our splices are pretty much as strong as they can be. With these splices the bottle bursts before the splice does.
@pudresful For these particular bottles, the unreinforced one is 102grams and the one with the reinforcing is 136 grams. The capacity is around 3.15 L.
Instead of using the tube connector do you think I would be able to just cut the nozzle like top and connect them with the glue
@Abalancedproduction They are available commercially. Search for "Tornado Tube".
We do fly regular MPR as well, but water rockets present a different challenge. They are also have a much lower cost per launch. :)
Very clear instructions! Good Tut!
@annoo4 We get the bottles from the shop but also friends and family give them to us when they are done. They know which bottles to buy. :)
This bottle can withstand several atmospheres
？？？
I hope nasa’s watching this,that’s a serious glue job
Hi may i know what is the product of bottle you using it?
Question ,what did you use to to join the completed set of 2 bottles together you screwed them together what did you use please ?...I did not get that part ...thanks
why do use the tape, is it primarily for strengthening purposes or as a marker? Thanks
The sikaflex here is used as a seal, so pretty much any equivalent polyurethane based glue that doesn't bubble should be fine. If you are using PL premium you may be able to get away with just that instead of using the two glues. Where we live it is humid and the PL bubbles while it cures which makes some splices leak slightly. Hence why we are using the sikaflex which doesn't bubble as the seal.
George have you made spliced bottles completely by Sikaflex - 11 FC,or should i try and get some of the PL Premium.thanks for the great videos
how do you measure psi ,because i only know how to calculate newtons or force by f=ma
@Abalancedproduction
Go to Google "Shopping" and type in (with quotes) "tornado tube" -- you will get a dozen hits. Without shipping, they cost around $2 USD. You can find info on them here on RUclips.
thanks for the video! I love rockets and I'll try to make one
can u please tell me the exact name of the material which u r using here for joining the two bottles? and please tell me from which kind of shop i will get it ... like somewhere from the mechanic shop or from an electric shop?? please tell me m really upset i have made 4 bottle rocket with hardwork n spend 4 days on it and at the end it burst while experiment it did'nt bear even 40psi pressure :(
Very nice tutorial !
handy man...so good
Would be working with pattex epoxy glue ?!
Is it suitable when you only use sikaflex even for the last step?
What is the size of the threads in the tornado coupling?
Wow! Now I can make some neat rockets that go almost as high as some of my 1700 foot launches! You are very skilled at water rockets, try actual model rockets though. not very expensive, 1700 foot launches.
That is a commercially available "tornado tube" they usually cost a couple of dollars.
With how many psi can the tornado tubes handle?
amigo, admiro mucho lo que haces, SE PUEDE UTILIZAR UN TAPAGOTERAS SELLADOR BUTILICO ?
Sikaflex by itself isn't very strong at all. The splice would fail at perhaps 50-60psi. We only use it as a seal because PL premium (which holds the splice together) can be porous.
Can you give me a link to the binning website what the pl premium
so are you like a aerospace engineer or something?
great tutoriol im using it right now !
well thanks alot :) i will search for it in all hardware shops and also on Internet :)
Thanku so much ..
i will contact later if i would find any difficulty in making this rocket :)
I'm wondering if acetone wipe, then wipe off in one direction with dry cloth might be a better surface preparation than sanding. Adhesive bonds are chemical, not mechanical, bonds. The surfaces must be free of oil or any other contaminant, to avoid weak layers in the bond. I'm not sure the surface needs to be rough as much as it needs to be clean. I know in aerospace bonding, sanding is seen as more operator-dependent than acetone wipe, because different people will sand differently. I also think it's recommended you solvent clean after sanding. But whatever works, I guess.
I believe sanding to some extent also cleans the surface exposing fresh materia underneath. I'd imagine it also creates a greater surface area for the glue to bond with. We only sandy it fairly lightly as we don't want to weaken the plastic too much. But I agree solvent cleaning after sanding can only help.
George ... maybe I missed it but I thought somewhere you mentioned how you keep PL Premium from hardening in the nozzle. I used my tube of PL Premium once, covered the tip with aluminum foil using a rubber band to keep it tight. When I came back a month later, the PL Premium had formed a rock hard plug in the nozzle that I had to carefully drill out to use the remaining glue.
Can you recommend a better way so that the glue does not harden in the tip?
I ask you a question what is the red one??
What is a substitute for sikaflex? I can't find the stuff anywhere!
I have found that any solvent labeled "Paint Thinner" will take the labels right off.
Sorry, I don't have time to think about my age, I'm having way too much fun with water rockets.
Hey just asking do you have a tutorial on how to MAKE a rocket
Are there any tutorials that just teach you how to make one of those long rockets??
Loctite has a huge selection of glues. Did you have a specific one in mind?
wath piece do you take to screw your bottle to an other
can i use googone to remove the label adhesive?
George ... at 14:26, you show a fairing that goes between the two spliced pairs. I tried that using the longest section of a single 2L bottle and it was not long enough. In the video, it looked like you spliced two sections together for the fairing. Could give some more detail on how you did that and what measurement you used to determine the final length of the fairing? Thanks!
Very good tutorial! :)
@bobilol24 Sorry, I thought before you said you used PL premium. You need to give the splice at least a full week to cure. 1 day is not enough.
muy buenos sus tutoriales. Nos gustaría saber como se llama el pegamento o adhesivo que usa para pegar las botellas.Le agradeceríamos que nos contestara.Saludos desde Rio Negro Patagonia Argentina.
El adhesivo que utilizan se llama PL Premium fabricado actualmente por Loctite
Bonjour sa Sert a quoi collé les bouteille c pas plus lourd collé avec silicone que les vis ensemble
can I make a similar tutorial in spanish. A and very good tuto it helped me alot
where did you get the orange tornado tubes from??
where do you get a tornado tube
@sethdenzak I'll have to give that a try ... thanks!
where do you get PET bottles?Please answer me soon.
i use plastic cement ... it was useless ...
i dont know where can i find this PL Premium :(
What is the purpose of curling the edge of one of the bottles? Is it for cosmetic purposes or is there another reason?
You join them with what?
how much this one two side bottle weights?
And I was just going to use some gaffa tape lol ! Thank you for that its an excellent tutorial. Where do you get the couplers from ???
I think you called them "Tornado" or something like that?
George -- disregard my comment on your other spliceing video and thanks for making this one.
You have made a 2 bottle pair that connects to another 2 bottle pair using a Tornado Tube. Have you found a practical limit to how many pairs you can connect in this fashion?
With a 2 bottle/2bottle section (total 8 liters), how much water is practical (1/3 of the total or ~ 2.5 liters of water)? Do you want to have the water go higher than the the T-tube connection?
Can you use all PL premium?
Hello, I am Taiwanese, you will make a model of grain rocket?
I want to learn, but my English is not good, I use a translator to translate see Please reply me??
Thank you very much ~
Thanks very much for all your quality educational videos. Any idea where we can get PL Premiumin Australia?
Master's hardware used to sell in here in Oz, but I don't think they are around anymore. I would just order it through e-bay or Amazon. The brandname is Locktite these days, but it is the same adhesive.
where do you get a tornado tube 14:23
Sorry, not sure whether loctite 401 is suitable.
how can you make the orange little thing at 14:23?
Okey thank you very much
@gk123434534 the splice fail and i let the glue cure for 1 day
i dont use the same glue than you use because i live in canada and i dont find the same glue
i buy this glue
does it correct: find on rona.com
Construction adhesive LEPAGE