Pressure Chamber | Resin Casting
ฝัง
- เผยแพร่เมื่อ 1 พ.ย. 2018
- Needed a way to "remove" bubbles from my casting projects like resin for composite materials or silicone for mold making.
A pressure chamber can squeeze bubbles that forms during mixing to a size that's hard to see.
The pressure chamber I ended up making out of this pressure pot is not meant for high pressure uses. Most pressure pot are made to hold up to 7.5-10psi so even with the relatively low pressure I am pushing in way over their limits. The one I bought still holds fine up to 30psi and that's enough for what I need but if you plan to make one be carful because things can go wrong in a split second (like with most of the things I do anyway).
To make this contraption a bit safer I installed a safety valve set at just over 30psi and all connection through the lid are secured from both sides with threaded fittings.
Thanks a lot for watching, I hope you liked the video!
Suggestions and comments are welcome.
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I think this is the first time I’ve seen someone test the bobble size at different psi. Great experiment.
I like how you show what didn't work and move to something that does! It's all part of the process of building!
Yeah, spending two minutes watching something that ended up leaking air was so rewarding. 🤦♂️
I felt myself cringing when you were pressurizing that PVC pipe. A little while back I build my own pressure chamber out of some 5" PVC pipe. Luckily I had the foresight to wear hearing protection amd take cover behind a chair. Because at around 70 psi (4,5 bar) the cap blasted off! It sounded like a cannon going off in my little flat appartement, and it took out two of the chair legs I was hiding behing. Thankfully no injuries LOL, but do be carefull folks when messing around with high pressure stuff!
Pressure chamber, very good.
I was thinking it's a vacuum chamber.
Good job.
I found the vacuum chamber video, both are awesome.
Thanks.
I really enjoy smart people like you!
I built a vacuum chamber myself, I remember when I first tested it with some trepidation just like you ha ha. I have found that 50 psi will give the best results at the lowest pressure
Buen y hermoso trabajo, felicitaciones
assuming this is a cliffhanger... have to agree with the vacuum idea... but can't say for sure because I don't know what you are trying to do... Interesting regardless. Keep up the good work sir.
WHAT....you using the best pressure pan ever !!!!!! LOL
Wow. That was interesting. 👍🏼👍🏼
Thanks in a million.Great content.
I love the sounds lol
suuuper dangerous dude, one friend died doing just that trying to make a pressure chamber in order to try a new dive reg that was designing.
Nice video
Excellent 👍👍👍👍👍👍👍👍👍
You are amazing bro
Very nice thanks!
nice i love this
finally new video
See, I liked that, More, More
You need a pressure vessel that you can draw a vacuum on. Mix resin - place in vacuum - apply vacuum - inspect, all air bubbles should have expanded greatly and popped. Immerse filled mold into chamber, apply 1 bar - keep it up until fully cured. Open, remove casting = hopefully zero bubbles. Often it helps to heat the 2 components to about 120 F before you mix and place in vacuum - 120F makes bubbles rise faster, vacuum makes bubble expand and float the top better, Caution, heating will reduce the working time, so only do this when you have a long enough working time.
Better to put them first in vacuum chamber then for curing use the pressure chamber. Can the pressure method be used for stabilizing wood?
Cool vid
Thang's for the Video ^^
what a genius
Nice 👍
A garden spray bottle pressure relief valve is rated at about 35psi and costs about £6. you could just put in one of those and pump it up. Obviously, your way is more fun to watch.
..stir resin with steel rod, less air whipped into mixture
Hi. If you want stabioized the wood or put the resin very inside in the wood or in another little hall on every mayerial you have to alterne vacuum and hi pressure.
If you use only one o the other the final risult is less precise. The resin or the cactus juice are less penetration.
I Think black Now use together vacuum and pressure.
Besides the pressure chamber, why don't you put it also on the vibrator tumbler? I think it would make the bubbles to "escape" better than being stationery... just wondering...
Where did you get the materials to make the first plastic container?
where'd you bought that gauge? I can only find up to -30psi and some similar appearance.
Very good, the touch of danger is perfect. The only thing I'm wondering is why a pressure chamber and not a vacuum? That would remove the bubbles, instead of shrinking them.
OH I see, you're going for a diffused look. Got it.
Because resin foams up a lot before the air bubbles pop, way more than silicone. in more complex molds that would simply blow out half your resin and destroy the cast.
interesting video👊👍
Hi BBP :) please, what compressor are you using?
Wow! What a lot of fun research came out of this! Such as,
Design specs for: body safety max pressure, altered safety tested, cooker max pressure, gasket material, gasket blow out safety defeated for model? hydro test, etc. And
Straw for blowing extra air into resin while mixing.
I'll bet it works like a hot damn though!
Why do you need a pressure chamber? Should you not be using a vacuum chamber to get air out of the silicon instead?
Could you try to remove air bubbles at 40 C ? Great video thanks.
I have no way of recreating this, I am so jealous bubbles are such a pain to remove
Sir,cooker safety valve opening,how much pressure
I am not sure what would be the use of this and what the end product would be?
Super! ..,....
Nice project, but you can remove the breakable safety valve from a pressure pot, without tools. Just push it from outside to inside
I need to one this
...я то-же сделал из скороварки вакуумную камеру, молодец парень, дай бог тебе здоровья и благополучия, новых творческих успехов 😜🤭😉👏🤔👌👍🇷🇺👈!!!
So why did you put an explosion hazard sticker on it? You think it could explode?
Oh no, I am sure it will, it's just that I don't know when it's going to happen.
Super👽👍
Start in a vacuum chamber to pull out air from the casting. There after put the casting in a pressure chamber to compress any remaining air bubbles.
6:50 yeah safety first
um salve do Brasil + like. dá até pra sentir a pressão daqui...
HF paint pressure can on sale will only run you $87 + a good regulator and valve are worth it for your safety, if you'll do more than a couple pieces...
Interesting
What silicon did you use?
Where did you get that pot?
I didn´t get the issue with the safety valve. Why did you open it up ?
How much time is left inside the pot. ?
Great project I thought the plastic would have been airtight.
Hi, from the video I seem to understand that for air bubbles in the resin it is possible to eliminate them even with pressure and not only with the vacuum, right? Thanks for the reply 😃🤝👋👍
Nico D'Addabbo pressure is better for resin because it’s sticky, if you’re using a narrower mold then a vacuum chamber will make it bubble over and you will lose a lot of your resin
@@hunterpatton1370 .Thank you, you are very kind, I'll try 👋👋👍
Pressure cooker should be good for 100psig, always test hydraulically, fill with water then pressurised it's safer.
I would not say It's much safer. High pressure fluids can be really nasty...
0:43
I recognize myself)
Pressure cooker are safe up to about 15psi.
I really like your channel and don't want to see you get hurt so could you just spring for a proper pressure tank. They sell them at local hardware stores. And they can read up to 60 PSI. Safely.
Some of your might get the wrong idea and make when themselves and end up hurting themselves. Pressure vessels are not something to guess with.
Yeah and in certain auto dealers Lamborghinis are sold...
I got mine $25 in grocery store 2gal, replaced the valves and istalled bicycles tyre nipple right in the middle, so stock silicone gasket pups out at around 55psi.. 50 it holds with NP..
Manda salve aqui e Brasil
I'm curious what the advantage is for pressure rather than eliminating using your vacuum chamber?
Do those materials expand or behave in another undesired way in a vacuum?
Your subscriptions are going through the roof for a good reason. Keep it up please.
Jay.
Example one: you want to cast a pure resin form on a wide open top mold. You use vacuum to let the bubbles expand and eventually float to the bottom of the resin to exit and disappear.
Example two: you are making a resin composit cast, micarta is a good example. If you use vacuum the bubbles will grow but they wont find their way out and remain trapped in the fabric layers causing delamination and/or even bigger voids in the composite. If on the other hand you compress them, given that your starting bubbles are somway tiny the will get smaller in direct relation to the compression ratio and almost disappear.
Also complex shapes casting, where the bubbles cant get out could be a good application for compression over expansion.
@@magnumpunch
That totally makes sense, thank you.
@@magnumpunch
Ok,
I've been watching the coffee come to save me and having a think.. I have an Easiwork™ pressure cooker (looks like a massive grenade) but I'm guessing pressurising through the heating of water within the system will mess with the whole process? Is that right??
What I'm asking in a roundabout way is:
1. Would steam interfere with the curing of resin?
2. Would the heat required interfere?
3. Do I need to get a compressor, a cool bearded Italian and a door to hide behind?
Seeing as you're being helpful..
Jay.
@@jimphubar If you pressurize the vessel (whatever container airtight) with heat (water just helps but it's not strictly necessary, also empty or better saying full of room temp air will pressurize due to expansion of the contained gas/liquid etc) you will need at least a pressure gauge to keep the pressure constant since heating constantly could lead to explosion and heating just once will lead to cooling and return to starting pressure. That said bad idea. Just du as Blackbeardguy
@@magnumpunch
Nice and thank you for your insight. It's refreshing to have pleasant and informative discourse in the comments.
Jay.
to dizendo que esse cara é doente kkkkkkkkkkkkkkkk
massa demais \o/
That's a really weird pressure cooker.
Selamun Aleykum. Seni Türkiye' den takip ediyorum. Çeviri yapıp cevap verirsen sevinirim. Buzdolabı motorundan yaptığın vakum pompası ile de epoksinin gazı alınır mı?
Burada yapılan vakum için değil aşırı tazyik içindir , bu usul ile baloncuklar reçine de sıkılır çok küçük hale gelir.
👍🏻
Not sure... You have a constant pressure from the bubbles pushing out. Isn't it better to vacuum to get off this bubbles?
If asnyone wants to do it on a bigger scale, keep an eye open for a paint pressure pot. These 20 liter pots designed to hold paint under pressure for bulk spray painting or glueing .They can be found cheap on online auction sites,especially those which cater for finance companies etc
👍 👍 👍
Anyone know how to prevent leaking from the plastic thread. I made a relatively good pressure pump out of 6 inch plumbing pipes but no matter how much teflon I use it just keeps leaking. I know the metal threads on vales are all fine bcus I put tons of teflon and even went an extra step by putting resin on them to make it seal, then I also put resin in the outside top and bottom of both the threading. But the Air leakage comes from the top. Since I can't do a complete seal bcus that's how I access the inside I've already used up almost an entire roll of teflon and it still keeps leaking air form the threading. And I've noticed it's from one side only the part where the threading ends.
Could try PVC glue, but have to take the Teflon out again, clean the contact surfaces then dab some PVC glue on both sides before putting it together. There's some video here on TH-cam showing how - search for "DIY pressure chamber".
la vecchia pentola a pressione della nonna
😍😍
Pode ser feito com qualquer tipo de panela de pressão?
Por que você desmontou a válvula?
Qual o risco de explosão?
O que você fez ou usou para zerar com as fugas de ar?
Cualquier olla de presion de Aluminio sirve para 25 PSI, En un orificio se coloca valvula de llanta y en el otro manometro. Valvula de seguridad opcional. Acero mas PSI, Desarmo valvula de seguridad para aumentar PSI
For those that say use the vacuum chamber...the issue is speed...pressure removes bubbles faster if using vaccuum it may not get that many bubbles out before it sets....
th-cam.com/video/yUerBWjMajE/w-d-xo.html
good nais
I wish someone would make and sell these!
Hi! What do you mean? It exist :) but it's damn expansive...
I take my hat off to you and other guys who enjoy tinkering about with stuff like this, as for me I’d rather buy the fecking thing!!!!!
What was the purpose in modifying the safety check valve?
Looks like to lower the "check" before it activates (releases the pressure). But if an individual is already asking and don't know what the content provider is doing, best to consult a professional or ask the clerk selling the check valve at what pressure you want.
Omg
what kind of compressor would I need?
An air compressor
Why did you make that modify to the valve? I know is a 2 years old video, i hope someone can reply
do you mean the original safety valve? well, basically he just permanently closed it, and replacing it with the one with the pressure gauge.. i guess
Wood that is so cool I am telling every body in my school about black beard projects this was awesome and can I have a shout-out please
My my, what a large tap you have.....
And what is the reason to use pressure chamber instead of vacuum? I mean, vacuum remove bubbles... as for the pressure - it just "hide" them. Or I am wrong?
Vacuum causes resin to bubble over into a mess inside the chamber. Very difficult to do cleanly. Pressure works better, also helps it to cure.
@@johnrobinson4445 hm... And what is easier to do? Vacuum chamber or pressure?
Two different purposes, vacuum pulls air out of wood , when released it can be replaced by stabilizing medium. Pressure will compress air bubbles so they are not visible. If you apply vacuum to resin it lowers boiling point , and sets up while boiling
Is this an ASMR
channel masked as a maker channel?
It's a pressure gage or manometer, not a barometer.
You know, these pressure chambers are mostly necessary for Bakelite types of resins. For pretty much anything else (especially acrylic, epoxy and silicone) a vacuum chamber gives you MUCH better results.
Forget the resin, fix my fridge!
would vacuum not be even better?
That's what I would have thought.
maybe the $100 for a vacuum pump is the reason, he doesnt have a pump
The air bubbles would expand and be even more noticeable. Under high pressure, the bubbles contract and are less noticeable.
@@huntpivot2 the air bubbles would be pulled out completely in a vacuum
vacuum to make the bigger bubble pop and then pressurize to make what's left less noticeable would be the right way. i'm wondering about stress induced by the pressurized gases
Aye
Wow extreme bro next build air gun bro
От разрежения больше толку чем от давления.
pressure cooker is a bomb i wouldnt even take a chance to repair it
I use a pressure cooker , BUT ! I put the quick coupler on , attach a sixty ft hose , set reg. Pressure at the compressor, turn the air on , and leave it on the far side of a wall , release air when done then go behind the wall when its safe
Excuse me....but what was all that for?
Annyai Presoski
It’s a year old question but I’ll answer anyway
Resin pours. For making jewelry or small plastic type trinkets.
When you mix resin and pour it in a mold they can have a lot of tiny bubbles in the item. Putting them in under pressure squeezes most of the air out and makes resin almost like glass.
Why not use vacuum?
hahahahhahaahahagahagahaa I think I can ear the horses of the TH-cam Safety Patrol Warriors runnig to report your dangerous activities to the TH-cam justice court. HAHAHAHAHAAHAHAH!!!!! disassembling a safety valve on youtube ? are you crazy? ahahahahahaha that stress test on the "out-door" laboratory ahahahahahhahhahahahaha
Glorious video. I love your work.
Thank you for those tips and tricks to made things easier.
Kind regards from Spain.
Je crois qu'il y a une erreur c'est pas sous pression c'est sous vide qu'il faut mettre ça !
Why?
You need more PSI to get all bubbles out. Check out Peter Brown and other people who make resin items.