I opted for a stainless steel cooking pot with a really thick plexi lid. The idea of glass imploding on me is not a happy one. The razor sharp shards will just spread everywhere. At least wear a face shield.
Some tips, though it doesn't apply so much to this use since you only need a temporary and fairly low vacuum (most of those hand pumps don't pull more than 22" or so Hg, which isn't a strong vacuum): White and black silicone work better than clear silicone. Silicone is actually fairly porous to gases and so it doesn't hold vacuum (especially higher ones) for a longer time. But the colored silicones have small particles of things like titanium dioxide, talc, carbon powder, etc. These act as an extra barrier to gases trying to diffuse through the silicone matrix i.e. slows down the process some. JB Original weld is much better, but I don't think it would bond well, if at all, to the silicone baking mat (low surface energy), so if you're using a silicone mat and not butyl rubber or neoprene, which are much better rubbers for vacuum, then you'll have to use the silicone caulk. The manual hand pump from the Pump N Seal system works significantly better than the break bleeder pumps. It pulls a surprising 28" Hg. It's a little more expensive though, around 30 dollars. Drill the glass while the glass is under water. Make it easier and captures all the particles. Diamond coated is best, whatever you use. Again, a lot of the above advice doesn't really apply for this use, but just putting it out there for people interested in vacuum for different purposes and which need higher and/or longer term vacuum. (Say you're making a home freeze dryer or the like, using vacuum as super insulation, etc).
Very good I appreciate your ingeniousnity. How many times you have to pump? May be hundred times or two hundred times. To empty the jar will 90% of air. It should be good exercise for the hand. Doing daily many times if you have lot of work. It is worth saving hundreds of dollars? May all be happy and at ease, free from dis-ease. 🙏🙏🙏
What about adapting a large mason jar type container? Or one of those ‘Bale Wire Glass Jars’ ? Ya know like in heath food stores? I saw online they’re now using silicone rings. Sizing would be key. Just spitballing here. Sorry if I’m going off topic. One idea sparks another. Thanks for the info & inspiration!
I picked up a brake bleeder vacuum pump in a nice hard plastic storage case at my local Goodwill for like $6. I wasn't even sure what it was exactly, but I knew it was some sort of vacuum pump. I thought I might really need this some day and it looks like it isn't cheap. Had it for a year. Now I need to resin-pot some high voltage transformers and I need to vacuum pump them to get the air bubbles out so they don't arc and short out. I might use an old pressure cooker in place of the glass jar because it is designed for high pressure, has a seal, and I can attach the host to the built in release valve to pump out the air.
Awesome! Best & cheapest I've seen yet! Thank you for posting this! Question: Do you think a 5 gal plastic pickle bucket with a gama lid would work? Maybe hafta fill the voids between jars with stones (to keep the bucket from collapsing)? Has anyone tried that? Just wondering. This glass thing is cheaper, but the bucket would hold more. Kindv important when using manual brake bleeder like I do on my way too small PVC chamber.
The first thing taught about instructional video creation is "Show Don't Tell" or "The More You Talk the Stupider You Look". Thus the incredible popularity in ASMR videos. Get a clue and use text graphics if you must communicate. Besides, your voice is very grating. Cheers! Ummm, Ahhhh, Errrr...
Great design and its cordless! One thing I would change is the container. If it fails there will be shards of glass flying around. Just use a metal pot from a Goodwill store and switch the lid out for a thick piece of plexi-glass that you can find in a dumpster or buy if needed. I like to dumpster dive so I already have a few large pieces of 1" thick plexi-glass.
Yeah you know after a time ppl will get tired of drawinf a vacuum with the brake bleeder. And upgrade to a fridge compressor. Anerica is such a throw-away culture you probably will find a fridge on the side of the road.
You literally made one of those flour or food storage pots that have the hinged latches on the front! They make them out of metal, plastic, glass, etc and have silicone seals. All you would've had to do is drill a hole. Lol.
Awesome, I was about to splush on a complicated vacuum chamber for metal evaporation, but with this I can deposit some aluminium on my silicon wafers on a budget!
I dare you to show a time lapse of you pumping that down to 29 inches with that hand pump. I'm guessing that 20 years from now I'll still be waiting for you to do it. 20 in is not is not enough vacuum to be useful. You won't pull any bubbles out of resin until you're down around 27 inches.
This makes me very nervous. I used to work on CRT televisions, that is a glass bottle with a vacuum in it. An implosion is NOT gentle. Pieces bounce off each other, some just fly past everything and continue outwards. The front of a CRT is very heavy, thick glass. However, the back is fairly thin as it is normally protected inside the case. If you break that glass, it can throw shards 20ft. I wasn't there for it, but I worked with a tech that had someone break a CRT in his shop. One of the pieces flew 20ft, cut through his pants like they weren't there, and embed itself in the leg of his bench. He was lucky, it just barely shaved some skin off his calf. It took a pair of pliers to pull the glass out of the bench.
I bought a HF paint pot on sale. You can't see in it, but just about everything you need to do for a vacuum chamber is already done. I also bought a returned vacuum pump, only thing wrong was it was missing the oil.
Great idea. I've tried 3d resin printing with clear resin, that, well, didn't turn out very clear. I heard that degassing the resin prior might get better results, but, really I don't do a lot of it. This might be my perfect solution.
Silicone takes a while to dry. What a pain in the ... Spend the xtra n get some quick dry, paint section of your box hardware store. Awesome vid dude. You rock!!!!
I loved this video. Maybe you could use a pressure cooker with external locking instead. The glass is better for seeing what's going on inside, but some pressure cookers have glass windows too.
By far? 3 years later, I'm able to afford a 80-buck VEVOR complete solution during Black Friday... and don't have to waste 23 minutes pumping... Your solution is still relevant for poor countries though.
