If you want to stick ABS together use acetone. It forms a chemical weld between the two sections and makes it pretty strong. You basically just paint the acetone onto the two edges you wanna stick together then hold it in place and it should set somewhat quickly
For a weld that is as strong as the base material, dissolve some ABS scrap in acetone until it forms a paste, then use it like glue. Once the acetone evaporates out of the paste, you'll have a solid ABS weld bead and no gaps. Much stronger than using just acetone but it takes hours to set if it's thick.
Dude, you triggered something! Mentioning all of those other RU-vidr's made your viewers go off and watch / notify them. Then they stuck around and watched a video or two of theirs, so you contributed a huge amount of "session" watch time. This is my theory. Interesting... I'm on vacation, but I'll try this when I get back!
#PVCWARHORNCHALLENGE This could be awesome! Especially if we can get some people like the Hacksmith or Colin Furze involved! Side note: The pipe I used for the horns was HDPE not ABS. Really difficult to bond.
If you use acetone on both abs surfaces that you wanna weld the hold them together for a few seconds than the acetone will evaporate leaving the two parts chemically bonded and its very strong :)
Just made a pvc airhorn like the video. It is extremely loud and its so much fun to add different lengths of pvc to the end to see what tones I can produce. Thank you for the video!
Awesome project. I use a hot air welder hand tool and and plastic rods to weld this on occasion, and it's still a son of a B*!ch, so I felt your pain brother 😂
This has been my field of expertise for over 25 years now, and I hate to break it to you, but between 279-450BC PVC was more of an ivory colour! But apart from that, beautiful work mon ami. 👍 Best wishes from an Englishman in a French forest (lifts visor and salutes) 🏆🇬🇧⚔️
Couple of tips: instead of trying to custom form your funnels, use cheap/inexpensive black plastic funnels from an auto parts store like the ones used for draining/filling automatic transmissions. Also to bend pvc pipe without it kinking, try filling the pipe with a sufficient quantity of play sand preheated in an oven to about 400 deg F. The hot sand will soften the pipe allowing you to bend it in whatever shape you want while keeping it from kinking/collapsing. Cheers!
Traditonal plastic welders use a spinning rod of filler plastic. The friction heats all three components (the sides to be bonded and the welding rod) and welds them together. Other plastic welders heat both sides by using a hot plate between the two sides and then removing it and sticking them together. Keep the torch for welding/soldering metal.
The best material I've found for making PVC air-horn diaphragms is vinyl sheeting. It's pliable enough that it's not too awful to work with, but it's also quite tough.
To bend pvc similar to a mandrel you can plug the ends (wood plug works well) and fill it with hot sand heated on a stovetop. The pvc absorbs the heat from the sand and is able to bend without crushing because the inside of the tube is full.
I would get a bending spring for the thin plastic to prevent crinkling or cracking. The spring will help to keep the pipe from losing form when heated. Hope this helps, nice build.
Now this is gonna be epic project! I challenge you to make the final horn loud enough to break your neighbours windows! However if you cannot get it loud enough just toss it through the neighbours window to maximize the annoyance :D
Amazing video as always! You are a big source of inspiration for me to work on projects, even though I'm more of an electronics/programming guy than a builder. Keep up the amazing work! I can't wait to see what you make next.
as you have found it is difficult to make a continuous profile from your straight sided pipe. You can build a very effective horn using stepped sections of larger and larger pipe to provide the horn expansion.
To resolve the kinking issues you had with the curly bit, you could run an aluminum rod, (or any bendable, yet rigid rod) through it, and bend it to your liking. You'll get the clean shape you want, but it won't be all floppy because of the rod.
If you want to bend the pipe without constriction, you have to fill it up with sand first! This definetely works with metal, so it should work with the PVC as well
Jairus, the reason shooting the air horn into the pipe didn't work is because all those bends has actually created a low pass filter. Your DIY air horn works because it's a lower frequency. If you took some bends out (like almost all) it would actually be much louder.
Heat up a bucket (calculate the volume) of clean sand in an oven or over a fire. Then dump it into the PVC pipe, let the pipe warm and then twist it around a form. (like a bucket). This came from a 60's or 70's issue of Popular Mechanics for making lamps out of PVC pipe. (less danger that way) ;-)
Can you imagine going into battle, and sounding your horn, and everyone stops, with a very weird expression on their faces, only to drop to the ground and crapping!! If only the brown note actually existed!!
You know ASB glue is in every hardware store, right? The other thing If you filled the PVC pipe with sand or salt cap or plug the ends before you started to bend the pipe in a coil it wouldn't of collapse in the tight bends.
