How to Build A Vacuum Bag
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- Опубликовано: 29 сен 2024
- How to build your own vacuum bag press for veneering, bent lamination or other glue ups. I used boat canopy window vinyl for bag material, and some brass fittings along with some rubber mat for the sealing gasket The bag lock is made up of some pvc electrical conduit. Have fun building your own.
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Awesome. Somebody just gave me a veneer vacuum pump and I'm looking at bags, but as always, I'd rather make my own...this is incredible timing. What kind of glue are you using? Cheers! Chris.
Thanks Chris. First I used some plastic glue that is suited for vinyl. But I ran out, and glued the second side with contact cement. Glad you found the video and timing useful😀
Great work, very interesting
Another way of cutting holes in the rubber mat cleanly is using a sharpened metal pipe. Either way is fine really, but if you need circles instead of holes and have the right size pipe, then it's a useful thing to know.
I hadn't really even thought about a vacuum bag being homemade. Really cool.
You are correct, I was opting for that, but could not find a small enough pipe to make the hole punch. Thanks for watching and commenting
definitely gonna steal that trick as well.. thanks
@@bellevuesnekkeri In my chemistry lab courses, it was common to use a small diameter brass tube-shaped cutter/borer to make holes in corks. Perhaps check a lab supply site or store - and ask someone at a local university?
Stem Valve... if anyone has any Ebay, Amazon or other links for this... you'd be an amazing person for sharing! 👍🏼
Want to build boards with some youngsters so could really do with making the bags to save money for other things 👍🏼👍🏼👍🏼
Hi! I've been reading the comments for the past 15 minutes looking for the explanation of why the bag stays in negative pressure when you disconnect the pump. When you replied in a comment " The bag stays connected to the running vacuum pump during the hole GLUEUP " - the " GLUEUP " means that both sides of the bag touches so there's no more air that could get through ? I'm not familiar with vaccuum sealing yet, I just got into the field to create reusable bags to hold large foldable items during camping (car cover, sleeping bag, etc...). So If my understanding is correct, that wouldn't work for my requirements, I'd need a one-way valve ? Thanks in advance for your time, it was a great video that really inspired me !
Neat. What do you use for the vacuum pump? Thanks and cheers, David
Thanks. I use an old refridgerator compressor. You can see it in the video on my MFT style table here: ruclips.net/video/QAifq5KC7ZY/видео.html
Can you put a valve on the stem to close off the bag in case you’re working with more than one glue up?
Sure, no problem. I use push in fittings, and these are available with a valve, or you can put a threaded ball valve on the stem. BUT I need to make more bags then:)
@@bellevuesnekkeri q
Great video...Annoying music, thank goodness from mute.
Could someone explain how the bag keeps the negative pressure even after the hose is disconnected? Is the brass fitting a 1-way valve?
The bag stays connected to the running vacuum pump during the hole glueup
Very good video, build is simple and clean! Liked and subed! 🍻
Thank you very much
it would be nice to give a link to the actual brass fittings you used here. That would complete a very practical/useful youtube video! Thanks Doug
Hi Doug. It purchased it in a local hardware store here in Norway,
@@bellevuesnekkeri could you please return to the hardware store and find out exactly what that fitting is called and what it's normally for? i can't find anything like it online without knowing what it is.
@@Everfalling I googled it and found that it is called a brass skin fitting
I work with this vinyl on a daily basis building custom boat canopies. If you use a plastic welder (harbor freight) you can actually weld this vinyl together permanently with some practice and will guarantee a true seal. I use 30guage glass because it is very rigid and resilient. Just a thought.
Thanks for the feedback James. Unfortunately there are no HF in Norway, but there I might try to bring a bag to my dayjob where we have heat sealers for plastic wrapping the woodpanels that we produce, good tip Sir
err that rubber sandwiched between 2 pieces of plywood is a trick i could of totally used a few weeks ago.
I will try to time my uploads a little better in the future 😀
Great video. This is exactly what I need to vacuum acoustic guitar backs to braces to form a violin style back. Then, instead of about 60 clamps to glue the front and back to the sides. do it all at once with this vacuum bag.
Thanks Ted. Vacuum is a great clamping method
Try using one of those space saver bags.. The ones you use to store cloths in using your vacuum cleaning...
Still use your homemade valve to remove the air.
Should be a thinner bag. Easier to move the excess bag around and prevent bridging over the object inside the bag..
Great video as usual......
Thank you for the kind feedback. I have been using one of those up until now. But i poked a hole in it a few times and figured I would need something stronger. I actually used it my latest video, and you can see it here: ruclips.net/video/qzziJOSYEhU/видео.html
Great video , what thickness of material did you use ? Thanks
Thanks.I used 0.40mm. Rough, but might be a little thick for delicate narrow curves
@@bellevuesnekkeri Thank You
Very nice!
At 0:36 , what is the brass fixture and where can I get one? Thanks!
Thanks. Its a brass bulkhead fitting I found in the marine section of a local hardware store.
@@bellevuesnekkeri Ha! Thanks!
what glue and what is the fix all stuff?
Its a glue meant for vinyl and plastic, some kind of contact cement like stuff. The fix it all stuff is like denatured alcohol or some other thinner stuff, just for cleaning the surface before glue up
Google says 20mil = 20/1000" (0.020"), but that 'gauge' is very inconsistent.
Nice work on the vacuum bag friend! Thanks for sharing the video.😎👍JP
Thank you SIr, and thank YOU for watching
You're very welcome friend! 😎
Really nice! I need to make one of these for gluing guitar tops. Fikk du tak i vinylen på biltema også?:)
Takk takk. Nei kjøpte den på et lokalt seilmakerverksted. Kjenner ikke til om de har slik vinyl der, men godt mulig. Men kjøpte både messingen og 2mm gummimatta, samt limet der. Lykke til med byggingen
Okei, da skal jeg se hva jeg finner:) Takk for det!
Plz make a video of membrane press with vacuum bag and this pump
welldone👍
Beautiful work shop!
Thank you very much
music sucks
Boat vinyl plastic? That stuff seems a bit pricey to use for this purpose?
I got it at a great price from a local store. It is extremely durable
Thank you for the instructions! Can you tell more or less how much you paid for the pump?
Tha vacuum pump is a free compressor from an old fridge that I salvaged
Next time use "bulkhead fittings" they are essentially what you made there. And boat vinyl is just thick vinyl. You can use vinyl, rubber or other flexible materials.
Unfortunately I could not find any locally
This is so genius yet so simple. Can't wait to build one of these for my own projects! Thanks for showing this build!
Thanks for watching and commenting
Can I use 0.25mm vinyl and glue them together with PVA/PVC glue?
You can use most material thicknesses, but it will affect durability. You need to use glue meant for vinyl/soft plastic. or use contact cement
Bagging tape is cheaper and faster, and if you’re doing curved surfaces you should get some PVA bagging materials and pleat it do you’ll be able to suck the bag down to the part with no voids
Thanks for the tip Brian, I will look into it
Does the pvc seal works well? I mean: can you leave it overnight and the vaccum is still there?
It works great, I use an old refrigerator compressor, and just leave it on during the whole glue-up. Its very quiet
Good video! Do you mind telling me where you got the brass screw with a hole in the middle to build your stem valve? Thanks.
Thanks. I got it from the marine section of a local hardware store. Some kind of bulk fitting for water cooling, i think
Maybe I missed it but what's the glue?
Its a vinyl glue, alot like contact cement
@@bellevuesnekkeri Ah that is what I suspected! Thank you for the edification!
Can i lock the bag by pipe for 4side without glue or
I mean 4 sides seals with plastic pipe
Hi. I dont think it wold be possible to use pipe sealing on 4 sides. It would be nearly impossible to get airtight in the corners
Brass fittings is generic. Please be more specific.
Thanks man I'm getting into some projects and this will help me tons.
Glad you found it useful Andrew
Would love to know where to get the brass fittings or what they are called. Can't seem to find anything like that.
www.fibreglast.com/product/vacuum-connector-891/Vacuum_Fittings
www.fibreglast.com/product/thru-bag-vacuum-connector-00910/Vacuum_Fittings
this may or may not be of use (I haven't made one yet, but just got the material): extra heavy duty clear PVC shower liner might be more readily available and/or economical for some - assuming it works that is. I'll let you know whether it does when I make the bag.
Thanks for the input Gordon. you are correct, it is more readily available, and another advantage is that it is more flexible, to give better pressure to tight curves.
I have made a bag of the same material, it worked great, but mine might have been not heavy duty enough as it punctured a couple of places. It can easily be fixed with a patch, but if you are careful and not have any sharp corners, I guess it should be no problem. Let me know how it works out, and good luck on your bag build
@@bellevuesnekkeri - thanks. I'm hoping the weather will cool here soon so I can get back to work in the shop. no AC suuuuuucks, especially when working with materials that react poorly to contamination by sweat.
Tx for the video. Nice workshop you have!
Thanks for the kind feedback, and for watching Paul
What size PVC pipes were used? Great video.
Thanks Dennis. I used 16mm for the inner one, and 20mm for the outer one😄👍
Why not just heat weld the vinyl sheet? Seems like that would be easier, quicker and probably stronger than the glue.
I was not aware of this option. Is it easy to do?
I've only done polyethylene sheet, which is lighter, but there are plenty of youtube videos on welding vinyl sheet like this, too. For Polyethylene, I've typically used an iron and some heavy paper and it's reasonably easy, but you need to be careful not to overdo the heat. Looking at other people online, using a heat gun seems more common with heavier sheet material like the vinyl you're using. I'd suggest doing a search for heat welding clear vinyl sheet and try it out on some scraps if you're planning to do more.
@@brettski74 dude that is unreliable and can have undetectable leaks
@@DhruvKumar-us5eq If done poorly, sure. The same could be said of glue joints.
@@brettski74 I use a” hand welder “ on vinyl glass daily at work and I’ll tell you, with a little practice, you can seam this stuff together so well that the only way to separate it is to cut off the seam.
What's the tape you're using on the fittings?
Its a teflon tape meant for threaded fittings
Add a manual valve between the stem and the quick connect and you can vac it out, seal it up and take the pimp off.
That could also work, but then I would have to make sure that the seal is 100% air tight. The compressor is super quiet and low power consumption
Bellevue Woodshop generally, if it's water tight, it's also air tight.
So nice👍🤩
Thank for your youtube, its great
Thanks for the feedback, and thanks for watching
Have you tried retrofitting a SpaceBag with that valve?
Hi, I am not familiar with SpaceBags unfortunately
@@bellevuesnekkeri they are commercial vacuum storage bags. Very cheap, too, and they come in s variety of sizes.
Do you know which type of brass fitting you used? (The one shown which is filed in the video) Thanks!
Its was a bulkhead fitting for fluids I found in the marine section of a local hardware store
@@bellevuesnekkeri thanks for the reply! I was able to search online for bulkhead through fittings and found some I plan on using. Do you know of any other ways of cementing/gluing the bag material? Best
What's the gauge or mil of the clear canopy used on like to know
The one used here are 0.3mm. It is a little thick for complex curves, but very rigid. I have another bag of the same material that is 0,12mm. It is more flexible, but also more fragile
@@bellevuesnekkeri thanks for replying well I guess I'd have to see what a happy medium would be any videos of the other material?.
Very good video of making the vacuum bag! I may need to make one and your video will guide me.
Q1- Could you link us to the “make a vacuum pump from a refrigerator compressor” video you made?
Q2 - Doesn’t the vacuum bag method of gluing prevent the glue from drying correctly? I’m only asking because I know temperature affects drying properly and was thinking that lack of enough air or O2 might affect the glue adhesion properties?
Thank you SIr. I did not make a dedicated video , just showed it in my video on assembly table accessories part 3. But it is pretty much just a case of taking any refrigerant compressor and cut the 2 pipes to the coil. One of them will suck, and the other will blow. Some suggest adding a few drops of oil into the inlet once in a while, but I have never found it necessary. I do not know very much on glue physics, but the glue dries for me, and I use regular woodworking glue. Thanks for watching
Bellevue Woodshop Ok. Thank you!
The pushin fitting on top of the take off looks like a standard pneumatic fitting. These are not usually suited to vacuum applications.
Maybe not, but they work for me
Man if it's working.... It is! WTF.
thanks great vid..I will be veneering a few cajon faces soon..
Thanks for watching and good luck on your cajon build
What thickness of vinyl is that?
I am not sure, I just purchased the thickness window making material they had at the place that sows boat canopies. It is a little thick, and tight curves might be an issue, but it is extremely rugged👍😄
Great tutorial on making a vacuum bag. Thanks. Could you please tell me where you got the valve stem? I cannot seem to find one that can take the male hose adapter.
Thank you Sir. I purchased in the marine dept of a hardware store here in Norway. It is meant to be put in the side of the boat to connect to cooling water or similar. this is the smallest one, I could find and it has 1/4" pipe threads. Someone in the comments section called it a bulkhead fitting for cooling water,
Bellevue Woodshop Thank you for the quick reply. I will have a look around to see if I can find one.
Another type of valve stem is a threaded shraeder valve for automobile wheels. They are available in straight and curved versions. Here's one source: www.kurveygirl.com/shop/product_info.php?cPath=169&products_id=71&osCsid=12jh4s43h1ujb8kfq54d0ih1f3 For this application, just leave out the inner valve.
Great video. It gave me some good ideas. Thank you
Glad you liked it, and thanks for watching and commenting Joseph
Awesome & Thanks :)
Thanks, glad you liked it
I guess a new bag is needed for each project?
No, the bag can be reused for as long as you can keep it from puncturing. Normally these last for years
Bellevue Woodshop I’ll have to give it a shot. I’d like to make one for fiberglassing.
It should work great for fibreglassing as well. Just make sure you tr to protect the bag from the resin getting all over it.
It depends on the material you use, but i could get stuck. Use some wax paper for protection
good my friend i going to try my new project.
Thanks
It's been a while. Any projects in the works?
It sure has unfortunately. I have been busy for months with a large house renovation. BUT I am done now, and have a new project planned. It will hopefully be out in January. I will struggle to put out more content in 2019. Fingers crossed:)
@@bellevuesnekkeri Well that's good to hear. Just figured I'd ask. You're one of RUclips's hidden greats.
Well thank you Sir for the kind feedback, it is much appreciated. Feel free to share any time:):):) Have a great weekend
What kind of glue did you use???
I used a contact glue for vinyl
@@bellevuesnekkeri thank you!!!
Brilliant! Thanks for the video!
Thanks for watching and commenting
????
Very smart!!!!!
Thanks
Do you not speak in any of your videos?
I do speak in a few of them. Mostly the ones that i feel a need to explain a lot of details. English is not my native language, and it is a lot more work to do voice overs. So I do some with narration and some without
Bellevue Woodshop gotcha. Didn’t mean to sound so harsh. Liked the video.
what is the gauge of vinyl? Is the stem valve the same as the car tire one?
I am not sure. I just purchased the thickest they had. It is vinyl meant for boat canopies. It could benefit from being thinner to more easily form around objects, but it is a compromise regarding strength. The stem valve is a bulk fitting for cooling fluid used in boats.
@@bellevuesnekkeri thanks, I will find out them. and build a vacuum bag.
@@bellevuesnekkeri I can't find out a stem valve, could you tell me where do you buy it from? Thanks..
@@lningzhang6655 I purchased in a local hardware store here in Norway
Anyone can tell what's the "male" bag fitting ?!...that "bulkhead" type !!...any brand or how to search for one alike !?, Thks
I am not sure what this is called in english. I purchased in the marine dept of a hardware store. It is meant to be put in the side of the boat to connect to cooling water or similar. this is the smallest one, I could find and it has 1/4" pipe threads.
Air tech is the name of the fitting.
It is a bulkhead fitting for cooling water. Usually made of plastic but brass better.
So, If I may assume, this is design to be a "water" passage bulkhead type ?
Was there a part# or manufacturer name ?!
THks
PS...none of my business, and in ALL RESPECT.....with a Bellevue name.....are you francophone ?! @_#
By the time your source and buy the fittings you will be at the price of one of these.
www.fibreglast.com/product/thru-bag-vacuum-connector-00910/Vacuum_Fittings
Ч👍👍👍👏
What is your Vacuum pump power
It is just a compressor from an old fridge. i am amazed of how much vacuum it is able to generate. and best of all, it was FREE
Can I do Membrane door press of this compressor
@@3DMrSharmaji I am not in the position to answer that, but a bag for a door is pretty large, and would take some time to empty from air, but the amount of negative atmospheric pressure should be enough
Very nice
Thank you Sir👍😄
Great video. What kind of glue do you use to glue the vinyl? Thanks
Thanks, I used a glue meant for vinyl and soft and hard plastics. Its sort of a contact cement. I am sure you can use regular contact glue
@@bellevuesnekkeri can rubber based adhesive will stick vinyl sheet
@@shivankkumar7185 I am sorry, I have no in depth knowledge on gluing vinyl, I just used a vinyl glue. but try on a small piece, and see if it works. Good luck
what gauge of vinyl did you use?
I measured it to 0,4 mm
@Julia - 𝙾𝚙𝚎𝚗 𝙼𝚢 PROFILE yeah i'm also stumped as to where to get this stem valve. not even McMaster Carr seems to have anything that looks like it.
Nice
Thanks
3:00
and
5:17
Groovy!
ooooh yeah.
Great work as allways
Thank you SIr
That works great.
Thanks
top!! i like it
Thank you Pieter
Fantastic video, am loving the "Wood Workshop", it looks as tidy as a kitchen! I can tell a lot of thought has gone into how to pack as much into that space as possible, will definitely learn from that.
One question: Any ideas what hose connector(s) I'd need to adapt this for camping use? It would need to be a much lower profile connector (kind of like a tank connector fitting) but be able to use a bike/hand pump to deflate somehow. You get huge negative pressures and I'm just wondering if that could be done "In the field" so to speak.
Cheers again, I've subscribed! 👍
Thaks for the kind feedback, and for subbing. I now some people have used angled car wheel rim valves, but you need to find a way to secure it to the bag. i know some brands have a threaded stem. But as you are not in need of a heavy duty bag for extreme use (my guess) there are multiple bags w/pump on ebay, meant for stuffing away pillows, cluthers and other fabric like stuff
Another excellent video from Bellevue Woodshop. Very helpful.
Thank you very much Alastair for the kind words.
Nice work, what glue are you using, ordinary plastic glue? Bra jobba.
Takk for det. Brukte Biltemas plastlim, men som sagt jeg gikk tom når første forsøk gikk i dass. Og siden det er 1 mai idag, så ble det kontaktlim på den andre sida. Derfor det er en klar og en brun fuge
As usual, nice work Roy!
Thank you very much David, glad you liked it😀
How you get air out?
I use an old refridgerator compressor. You can see it in the video on my MFT style table here: ruclips.net/video/QAifq5KC7ZY/видео.html
Thanks for the answer :)
Why glue? Soldering iron better
Great work man...more videos Please ...;-p
Thank you for the encouraging words. It is much appreciated