DIY RC Cessna Citation M2, Part 2
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- เผยแพร่เมื่อ 28 ก.ย. 2024
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Put the whole mound in a vac bag. Should stop the leaking.
The plane twin turbine uff
love your builds
B-787-9 Mk-2 please!
Can you please make a step by step guide to using carbon fibre and fiberglass to build rc models
Put the whole mound in a vac bag and seal the ends.
There is air inside 3d printed parts too, so the mold would implode due to it pulling air from the inside of it. Or at least i think that would happen.
@@lennartw.2219 no it won't...with 10% infill the PLA can take 34#/in2...vacuum bag only is 14#/in2. You do have to account for compression shrinkage at about 2% however.
@@fokker1979 haha ok, i see you are well informed😁
Thats what I do. 8% infill, 0.6mm nozzle and 0.44mm layer hight. The moulds are extremely strong. I put them in a vacuum bag and go to arround 600mbar, works great.
This, absolutely! Really surprised to see Ramy skip this idea. I've bagged wings with pretty low density foam cores before and those don't crush, so I can't imagine there'd be any trouble with the printed molds crushing.
He is making airplanes even faster. Just wait ur gonna see him do two airplanes in one episode.
lol ikr
lol
Worst part about his videos is that they have to end😭😭😭
I love the mix of your use of tools and technology like 3D printing and CNC routing and all the incredibly skillful handwork, like cutting out control surfaces, windows, access panels, etc. You are truly an artist and it's inspiring!
Cleanest workmanship ever seen in yt
Nobody:
Really nobody:
Ramy: let’s use 2x 400€ EDF‘s to secure 1€ Depron on the table 😂
Just joking, it’s an amazing job you did there!!! I can’t believe how high quality your builds are now. I’m so proud to see that!! 🥳
😂
hello, again a great video from you. there are also many inspirations for me. but one question: you used presto spray primer beforehand. what did you use this time greeting
@@jorgkathage3893 same primer but it's two parts, still prefer presto!
This video format really threw me back to your much older videos. The amount of work you put in for this channel always impresses me 👍
Another option would be to vac form a thin HDPE skin over the mould surface first - still using your original method. That would get over the leaking issue and save having to strengthen the complete mould if putting the whole thing in a vac bag. Great build series BTW!
Put whole mold in some sort of air tight bad and air leaking problem is solved
Or maybe try a plastic bag en put the complete mold in it
@@Tuitjemobiel That's the same thing I was thinking to put the entire mold in a plastic bag.
I was going to suggest this 👍👍
Problem with that is the mold could crush or get distorted under vacuum pressure. Not the best approach unless the mold is tough enough to handle it.
@@AntiDot70 That's true, maybe he can try one and see how it goes.
It's very refreshing and pleasing to watch your excellent work and attention to details. It pains me when you put so much work into something and it turns out less than you wanted it to be. Great videos, I look forward to each of them.
Ramy, Instead of just bagging one side, slide your whole mold into a bag that surrounds it and then just seal the end. Think of a loaf of bread in a plastic bag, only one end is open. That will get you around the porosity of the printed mold. It will also greatly reduce your need for the sealing tape. The way you can seal the end of the bag is to use a round tube that is split down the middle, wide enough to allow you to lay the bag onto the split and then snap a piece of round rod into the split, it must be a snap fit so that it creates a seal, that will seal the end of your bag. As stated, that should help get rid of the sealing tape and seal the porosity of the printed mold. I hope I explained it clearly and correctly so that you have a picture of how I mold things. It will also work with resin infusion. Infusion is the best way to go in most cases. Good luck and love the videos.
Hi. I'm Brazilian and I'm a big fan of your channel here on TH-cam. I follow all of your videos. You are to be congratulated! I work at Embraer, the third largest aircraft manufacturer in the world. I would be very happy to see you making an E195-E2 from the E-jet family. A hug.
Congratulations Man For 400K !!
Love from India 🇮🇳🇮🇳👍
What a fantastic skill you have. As usual a very professional build.
I have worked with carbon fiber and 3D printed molds. The simple solution is to just put the mold with the carbon fiber in a vacuum bag that goes all the way around the mold.
Normally 3D prints are strong enough to withstand the pressure
Hi mantis can you kindly tell me how do you decide which gsm and grade are you going to use for the carbon fiber?
Hi there Ramy. You should really try using a compressed air to blot between the mold and fiber - it will loosen up and its widely used when doing that sort of work. Great video btw.
Man Ramy, you come up with better techniques and ways to build them to an even better quality every episode! Your unreal man, would love your brain! ☺️👍
For the vacuumforming I might have an idea that could help you. Keep in mind I do not have any experience but what if...
You would use two layers of that plastic film and seal it around the whole mold like a bag? Or maybe bags like that are available. If not you could just melt or glue the edges together. This would solve the issue of PLA and its lack of airtightness.
Anyways, loved the video as always :D
Please make a video on equipments ,tools and glues you use love your build
Wow, Wonderful process ,you are building just like factory full scale, Awesome Man
I'm working on the early stages of a fiberglass composite aircraf, The cozy mk4. To avoid resin uptake weight we add microspheres to epoxy 1:1 by volume and cover the surface of the core material in that. You only fill the pores that way. You scrape of the excess before you start fiberglassing.
That technique should help with that top wing skin weight
Also I don't think you added anything on the other side of the core material... Only having carbon fiber on one side of the core won't make it stronger.the point of core is to add thicnkess with minimum mass.
So far I'm loving the builds. Some of the best craftsmanship I've seen on composites I've seen in a long time
Absolutely astonishing craftsmanship !
One more thing, I would love to see a thrust reverser system why not work on a simple clamshell design similar to the ones used on the gulf stream .... if only for the visual effect . To see the spoilers pop up and the reversers kick in would look awesome 😎
We like watching you work, and would prefer the video at normal speed. Really!
Amazing work👍good job Ramy, keep going 😀god bless you 😀
Do not try to seal against the print/mold, just bag it from all sides no need for extra work =)
(the only concern here is for the print not to collapse, but you can reduce the internal volume of the print by printing in cavities on the bottom side and increasing the infill)
I was going to say the same.Other videos I have seen use a vacuum bag. Also my 3d printer are stronger I assume I use a lot more infill and edge extrusions and top layers.
"And that's the thingy".
Looking good, can't wait for next video.
Amazing amount of work. Great to watch.
ironical, we have a citation in for repaint at the minute. M-YSPC just bought from the USA. Keep up the fantastic work Ramy love every episode of every build x
My experience with PVA is that is really does not hurt the surface one or another.. if you fish eye it, wash it off and do it again.. In my case, I don't really bother because I still have to sound around the seams and by the time you do that and paint the skin in the final colors, any deformations caused by PVA, if any, wont show through anyway. At any rate, that's the first time I've seen Vacuum infusion done.. Looks pretty good. Also, the vacuum bags I use is this stuff called Stretch 200 from Fiberglast...I saw that you were pleating the bag and it didn't look all that stretchy... The Stretch 200 really doesn't require any pleating and it will stretch tightly into just about any corner... I also make a bag and just basically wrap the bag around the whole mold.. Although, for vacuum infusion I don't think thats going to work out too well. Works great in reducing voids in the corners...Never the less, keep up the good work! Its fun watching you work... Helps me learn a few tips and tricks I didn't know..
Very well done. You should make molds for making planes to sell.
Happy to see your new uploads sir.
Hope to see you building honda jet on your next vid. Keep safe
its a pleasure watching these videos all your hard work really looks great
Another masterclass in building - thanks Ramy 👍
Always a pleasure to watch your video's. Awesome work.😀
If I may suggest painting the outside of the 3d Printed mold with something like Polyurethane varnish or most any paint that is durable and will seal the outside of the mold. I don't know if it will work but maybe try on a tiny mold so you don't waste too much time and materials. Love the models you are making.
Weldone Ramy, I am always exited to Watch your new videos.. I've actually been a fan of airlines since 6.
Hey Ramy. Glue the plastic bag directly to a table with the mold inside, instead of glueing it to the mold itself. Ps: awesome job anyways
You have done nice work I watched videos on time
Duddeeee!
I was being waiting for a month for A380
Please send that second part too
Every weekends I must see your channel for new videos and today I checked in hope of A380 but it's not.
I don't regret and asking you to stop building this
But your videos are like Magics which directly make us to see
When you print your moulds, eliminate the core material and use a honeycomb rib structure open on the back side. Then pour a low grade epoxy resin mixed with chop chop in from that side. Will give you a completely solid mould to fully vac bag rather than trying to seal the edges
You have to spray PVA with air gun, not brush it. Sprayed PVA gives pretty consistent surface finish (not perfect though, but consistent light orange peel texture with a little matte appearance).
Excellent very hard work 💓💓💓💓💓💓
Ramy, I hope you didn't forget the pitot tube this time... lol!!
Subscribed you from my two accounts because love those flying models.
Expecting some fighter jet models as well🤩
Amazing video and great construction. It’d be cool to incorporate the super strong carbon-fibre into the structural strength of the wing, a bit like a full size airliner.
Such a great job
Wish i can come to you and can work with you
Keep going bro.......❤️❤️
create an air bag and use pressure from that to put pressure similar to ski and snowboard manufacturing use a small wood frame to hold it together
Best work I've ever see
Wow
Awesome Ramy looking good 👍
This plane will be amazing
might be a little late, but put a bag around the whole thing, you'd get a vacuum, but you might have problems with pulling your resin through the mold
Great progress Ramy! She's going to a lovely flyer. What plastic did you use to heat form the cockpit windows?
Great progress, looks like you need a taller workbench or lower stool. 😁
Hey bro that’s awesome. And I can Imagine the hard work it takes. Thanks for these videos you make.
Looks like layer adhesion issues. The mold shouldn't crack like that just from sanding or pushing on it. You might try what we use for printing airplanes...that is to print hotter than usual for better layer adhesion and don't use a part cooling fan. Typically for 3dLabPrint planes they recommend printing PLA at 230° with no cooling fan. Also increasing infill will help.
Hi Ramy I am watching your video: DIY RC Cessna Citation M2, Part 2 and your problems with air getting into the form and Carbon (CF). Have you considered a gelcoat on the form 1st and eventually also using a plastic bag on the backside of the form and then connecting the plastic on the front and back side. I cant remember if a gelcoat layer is 0.6 mm or its the size of 2 layers but a test and considering this when making the molds might be the easiest fix for your trouble. Nice job with the planes and videos. René
Well done Ramy, as always.
U give me many new ideas to build a plane
Wow, this is some awesome work you do :D
Congrats Ramy! Great craftmanship! Please, where can I buy some carbon powder that you use?
Waiting for that full scale BD-5J
hi great build as all ways .. can i ask you what was it that you used for the windows in this vid .. cheers ..
Good job, big fan from India
can't wait the next video!!!
So... I found that putting the mold in a whole bag solved this problem. Sorry to see you struggle with this, as it is frustrating. Cheers
GREETINGS from INDIA
I have Refueled this aircraft so many times
Gravity fueling this aircraft though hands really pain alot 😝
I love your videos
Wow , love your videos, your work is amazing and attention to detail.
Mann, guck dir mal den ersten Flügel an den du gebaut hast und dann diesen. Es sieht so gut aus
You can put all of the mold into a larger vacuum bag. Then you do not have vacuum leak problems
Waiting for part 3..
From Indonesia
400 grams is a lot for a wing, but it is as strong as steel :D
Hey ramy, i really enjoy your videos since you tipstalled the airbus :D but do your back a favour and get a higher table. It will save you a lot of energy while building and is healthy for your posture :)
Hi Ramy!!!, I'm waiting for your latest videos, especially the video for the A380 project, thanks. 😁😁😁
Is it Vivak sheet, you are using to make the the front windows?
!!! SUPERB !!!
The next project could be a performance glider :)
I was wondering: how do the wings hold? Are they attached to the fuselage only by friction, thanks to the 2 bars/tubes, or is there an additional fixing system?
This is just speculation, but I think the two cylinders that go all the way into the wing are enough. Like in flight the wing experiences vertical stress caused by the lift, while receiving little lateral stress.
@@chesterwang3070 Yeah, that was also my supposition.
Just use a Foil Tube around the entire mold, then it doesnt care if the mold is not airtight! ;)
for the vacuum sealing why not seal the entire mould and wing and everything with the vacuum bag
Awesome
Parabéns Ramy vc e demais e seus projetos são incríveis parabéns sou do Brasil e sou um grande fam do seu trabalho parabéns
Ramy please wear safety glasses when cutting with a dremel tool. Stay safe!
Ramy why dont you enclose the whole mold in the vacuum bag ?
Lay a sheet of plastic on the table and bag from that
When are u having a video on the a380?
What adhesive are you using to glue the ribs to the skin? I see you using a bag.
For the next build do you think you could build a 747
Q trabalha incrivel meu
Deus.....tenho muito muito vontade de aprender
Just wondering, couldn’t you put the entire mold into a plastic bag and vacuum the air out?
Love you ramy
Next video, Challenge Flight in rain
I know absolutely nothing, but if you had put the whole mold and layup in a bag would that have not solved the leaking vacuum problem?
Could you seal the mold by painting all sides with an epoxy?
Hello, I am following your work. I have a question for you, what is the material you use to smooth the composite surface before painting and what is the paint afterwards? Thanks for your information.
Can't you tape the vacuum bag to the table instead? So all of the module are in vacume? Seen other do it like that.. But not with a 3dprint!
Can u pls make a diy type like one that is a bit easier to make for beginners?
Hi Rami.
Awesome job!
What king of plastic do you use to make the cockpit glass? Video time 12:34