Vessel of boiling water, silicone, a drill bit, a nail, and a small block of wood. I would love to see this Incorporated into a script say for someone stranded because of a bit of tubing. This is so Macgyver or something I could see a character in a Zombie movie having to do. Fucking brilliant!!!
That was awesome! So many ideas are now flooding my brain that I want to try! Lol, I never knew you could DIY extrude silicone like that until I saw this! So thank you, I will definitely be experimenting and sharing with fellow mates to try as well! Cheers!
Hi, Engineer Nick! I’m wondering how long that homemade silicone gas line held up; I’m thinking you probably got some pretty good use out of that. I can’t help but wonder if Spraying a little bit of mould release inside of your extruder Might not serve to reduce the friction of the silicone as it goes through your extruder bit, so that you lose less of your material out the other end of the tube. Of course, that’s just a thought from somebody who hasn’t yet done this, but Is really grateful for your tutorial, with a definite project in mind for the technique, you’ve just taught. Thank you very much for it!
+Kedar Nimbalkar Check out my next video where I show results of extended fuel resistance test. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-a9pL-ZWDBNI.html In that video you can see my set-up with two syringes... I could barely make the pipe collapse under vacuum. But it is easy to make it balloon out under pressure.
Metal block with intersecting hole hole drilled for mandrel from bottom of chamber allows multi use extruder that can be cleaned. using a set screw in the side of block allows different drill bits for inner tube sizing
Since this type of silicone is moisture cured (I think the correct term is condensation cured), it might speed up curing on the inside by removing the squashed ends when the tube is firm enough to handle and put it back in the water to allow water into the tube.
You are brilliant! I may never need a silicone fuel line, BUT you never know when custom silicone tubing for one thing or another is needed and nowhere to be found. I use vinyl tubing to pump out hydroponic tanks and it's too stiff and unwieldy. My silicon air pump tubing, on the other hand, is far more cooperative. Thank you so much for sharing this. The jig made it all possible. Maybe a two-part polymer clay mold is your answer to a reusable jig. Once the silicone sets up, you could take the polymer clay mold apart and cut out the silicone plug.
And hydrogen peroxide isn’t cheap? What % food, or jet propulsion has to be brought to you in hazardous tank by qualifying driver, food grade? Cool video, antiseptic chucked in water? Down under sell in little bottles. Didn’t smell acetic acid, vinegar smell? Like a covering of another tube? I had a 502 ci braided line fail, was garden hose lines, no fire. Noticed when gas went from 9-10 mpg to trick to girlfriend most tank 3-4mpg, front didn’t lift like a boat. Small engine, see loads fires. You can get a real one for $8 and heat shield fiberglass cover enough for any car length route. I get real lines vacuum non collapse chemical acid lye cheap. Try Amazon, no way cost that, he joking!
Just tried this and it worked amazingly! The hot water is a great idea, and appears to make the silicone cure quickly while preserving it's shape. Awesome!
@@EngineerNick so not tested or anything, but logic tells that if the silicone can withstand oil, it should withstand most of the fuels too i think? if so then the usual car gasket silicone should work. only there isnt transparent silicone of this tho
is that your average everyday 3% hydrogen peroxide? GREAT video thanks. Silicone actually needs moisture to cure as does ‘super glue’. If you were to line that block with some kind of anti-abrasive you’d get nice smooth walls (I’m guessing)
This is a seriously clever idea. I think if you ran a bolt or a screw through the block from the other side; you would be able to clear that blockage. For a wooden block on this small a tube its not such a big deal, but this idea has potential to make much bigger lines. I am building a gold prospecting suction dredge right now and I have been really needing better tubing. Making my own lines out of silicone rubber hadn't even crossed my mind. A couple of tips from what I have learned with my own experiments: Thin the stuff down with toluene and add color to it and then use a basting syringe instead of the caulking gun. I think you'd have a lot more freedom with that and way more options. It may take some tuning to get the silicone thinned down to the right degree. Since it would be runnier I think it would be better to have it closer to the water and make the water deeper. Again, not such a big deal on a tube this size, but if you go bigger you'll benefit. Plus being able to color it and reuse your die is all nice too! Sub earned!
Glad you enjoyed the video, fascinated to hear what you are using it for very cool :) If i ever try it again ill look into the dye and toluene thing :)
@@EngineerNick I forgot to add that depending on the silicone you're using; mineral spirits may do the job better at thinning it. Gasoline also is an amazing thinner for it but the fumes are really dangerous!
in fact they use the same technic in aluminium profiles extrusion, splitting the metal with a first die, then fusion it back with pressure and heat on a series of following dies, this way you achieve multiple holes in the profile, and most silly shapes that cant be made with machining tools.
It did not work for petrol at all :S It swells up to about 4 times its original size, and it's to soft to hold a strong vacuum anyway. But for other water based purposes I have used it a few times. I have another video on my channel somewhere where I test the silicone meant for form-in-place gaskets... that also swells up. It also burns in a really unusual way
Very clever but I hope you realize that silicone is not resistant to fuel. Normally silicone tube needs to have a fluoropolymer lining to be resistant to fuel and oil.
Silicone from a tube does not hold up to gasoline. You can test it for yourself by taking a piece of hardened silicone and putting in gasoline; it will swell and crack.
haha yes i discovered that later i think i show it in this video. once it is swollen up it burns in a really interesting way too. I think i show that in the second video
I doubt polyethylene or polyurethane is what is "commonly used for fuel line", because last i was at Conrad looking for silicone tubing, most of it was marked "fuel line", and conversely, looking for "fuel line" delivered silicone tubing. :P It also barely cost anything, like less than 2€ per meter off a roll. And it's even cheaper than that on eBay from nameless suppliers, last time i had to order much thicker tubing that has a lot more material in it, it came out at about 3-4€ per meter shipped and delivered in 2 days. The ones from eBay claim to carry a food safe material certification on it, which even if the certification is fake, probably means it's titanium catalyst, high temperature cured, and should actually be very solvent resilient. I guess there are other ways to make other kinds of silicone somewhat solvent resilient, like post-cure at high temperature to convert some of the residual products too. Congratulations on successful extrusion setup experiment, that is certainly good to know just in case.
Thanks for the comment :) From what i see on ebay in Australia anything called silicone fuel line seems to come from the UK and certainly isn't cheap or fast to ship :/ I went to an automotive place here in australia and asked for fuel line and i'm pretty sure they gave me clear polyvinyl chloride tubing which works fine for a while but ultimately goes stiff and cracks. There are places here that sell proper silicone tubing that would work but to expensive for me to test for fun
Aaaaaah, Australia. I hear everyone uses HobbyKing (Hong-Kong) out there because there's barely any local RC industry, didn't think of it at first. Over here in Germany RC models are a national hobby, there are specialist stores everywhere, including Conrad that is a nationwide staple. Now i had a look, first thing i see on HobbyKing is "Silicon fuel pipe (1 mtr) White for Nitro Engines 4x2.5mm" priced around A$2.25, with options of delivery from China (very cheap shipping for everything that fits into a B4 envelope, usually around 10 days - 3 weeks delivery) or from Australia warehouse (starting around A$8, 3-10 days). They have warehouses all over the world, but the Australian one is the best stocked one. And then when you go the China route, there's everything on Aliexpress, and shipping an envelope from Hong-Kong really only costs a fraction of a dollar.
I'm pretty sure you can buy casting silicone that would handle the fuel no problem at all. Even the expense of that would still save you money if you extrude it this way.
Hey man, i have no idea if it would work with medical grade silicon. The liquid i added to the hot water is H2O2 hydrogen peroxide though i don't think this really did anything. it takes about 30mins to harden in warm water. Cured silicon is very resilient to temperature although it will go a bit softer when heated. Not sure how much heat it can handle though :P
You can buy Fuel silione tubing very cheap by the roll or meter if you knwo where to buy, PTFE tubing is even cheaper, and totally fuel safe. Basic domestic Silicone is NOT suitable, you need an oil grade silione it will otherwise degrades very quickly !
Hey there I never made it work as fuel line due to the silcone swelling however i can think of a bunch of other applications for very soft tube. Havent had a chance to try anything else yet but i think it could be the basis for a 3d printed peristaltic pump
@@EngineerNick have you ever used it for bleeding brakes cause thats what i want to use it for? Wondering if automotive brake fluid has and affects on it as well?
Probably not :P ... I experimented further and made one other video on this topic... I think using really hot water is the most important part... detergent doesn't seem to prevent sticking... and I doubt the peroxide is doing much. I am no chemist and i only tried it because I found some old patent that mentioned it as a method to catalyse silicone...
I’d gonna fail and you may burn, hell PTFE for super car not that pricey. Great video, clever. Do not do this! Silicone is inert but that’s a disaster, it’s make different not from that under vacuum or pressure. Is this just a joke? Or for a model? Antiseptic isn’t sane as 6-food grade, chemical, jet propulsion stuff. I missed a part? Guy was messing about prices. Seriously no way in gasoline or any thing depend on.
Your incomprehensible rant is duly noted Mr Monkeys. You will see in one of my other videos I did a fuel soak test and the tube expanded into a super soft jelly rendering it... pyrotechnically flammable. Still, this kind of tube may be useful for a wide range of other applications. It is most certainly waterproof and probably acid and base resistant.
