I was literally researching this at the time of this posting. We just had a metal failure on our HFT pressure tank 10 minutes prior. The clamps aren't ideal for quick insertion into pressure for our quick-cure applications. Thanks for posting!!!

Thanks Robert! A well-deserved break! But, I know you aren’t relaxing!

Thank you, and happy holidays!

It’s a work of art! Thanks for sharing the info.

thank you for all your efforts in producing these videos and keeping up the pace ! enjoy your breake, and stay safe

Hey Robert, I just want to thank you for your amazing videos, they've helped with my own projects so much! Keep up the great work 👍

Thank you so much for walking through your design for the pressure pot. I really enjoyed it. We'll see you again next year.

Yuss! Was wondering the same. Figured it was home made ! Good stuff!

awesome! glad I finally found this video.

Thanks for the great content, Robert. I've learned so many new tips to use for casting and mold making- you're a true legend 🙌

enjoy these days!! I will be waiting for your next video for sure! take care!!! :)

Thank you for doing what you do. This is something I'm very interested in and I enjoy your videos immensely. I hope you have a great holiday season and I cant wait to see what you do next year!

Happy holidays Robert! Thank you for sharing all that knowledge!!

Thanks for all your hard work,love your channel

Happy Holidays, Robert! Thanks for the great job on my base mold. I can’t wait to start casting some up for my projects. Stay safe and see you in the New a year!

Thanks for all the videos, Roger. Enjoy your time off, merry christmas and a happy new year. =)

Merry Christmas, thanks for the videos and look forward to 2021!

Enjoy your time off Robert! Looking forward to all the cool stuff you will share in 2021. Happy holidays.

Enjoy your break, happy holidays to you! Thanks for the details on the pressure pot, definitely a genius design.

Happy Christmas Robert. thanks for the great videos and looking forward to seeing more next year.

Really enjoy and appreciate your videos. Enjoy your break!

Love the video. You're relaxing to listen to.

I've been admiring your pressure chamber since I've started watching your videos. I noticed the oval door because that's why manhole covers are round, so they don't drop in. This design is super fast and easy to handle and I love it. I also love the touch of having a muffler for the air release valve. I always have to cover my ears for that, but strangely never thought to use a muffler.

🙏 happy holiday master!

Thanks for the video, Robert!! really love it it's such an innovative design were looking to make something similar here in the UK, So thankful to have found you as I've said before you house a wealth of knowledge in this field gained by years of trial and error!

Happy holidays Robert! Enjoy your well deserved time off!

The design is so simple and ingenious. It closes by itself and you don't need a bunch of bolts to close it. I realy love it. See you next year and have a nice Christmas !

Thank Rob, enjoy the rest.

Happy Christmas Thanks for all the videos look forward to seeing you in the new year J

Great video as usual, thanks for educating and entertaining us, have a wonderful holiday, looking forward to seeing you next year...

Thank you for this and all your previous efforts. Friday the 8th january I am hiding my face in tears - Merry chrisman and a happy new year to you and all your family ....

Happy holidays! enjoy your break!

Merry Christmas Robert! Can't wait for your next videos!

Thank you Robert!!! Merry Christmas!!!!

Thank you for all of the fantastic, educational content. Happy Holidays!

Thanks Robert, have a fantastic Christmas mate👍👍

Thanks for the videos! Merry christmas!

A well deserved break! Congratulations on your smash successful year!

Hey Robert, thank you so much for sharing all this information on your channel. I used to build large scale insect and scientific models for museeums. Now I changed to more technical stuff. It would have been great to have your knowledge 10 years ago - but I am so glad I came across your channel a month back. Take your well deserved christmas holiday. I am really curious to see your channel go further up in 21. Take care and thank you again from Düsseldorf, Germany Johnny

Enjoy your break, Bob! Looking forward to seeing you again in the new year!

Love your videos, Enjoy your Christmas break.

Well, this is a welcome video! Thank you sir!

Thank you for the Channel. Merry Christmas and an wonderfull 2021.

Have a good break, you've earned it!

superb advice

Thank you, Robert!

Merry Christmas! Have a wonderful rest of the year.

I recently discovered your channel and the info you provide is priceless. I just poured my first mold the other day and it turned out perfectly with zero imperfections, i was so happy. I cast both wax and chocolate Santa's with it. I so wanna do this more now lol. On a side note I could see maybe modifying your tank to have internal guide rails on the inside of the front face for the lid to loosely slide flush either vertically or horizontally so the chamber wouldn't have to be so deep and so you wouldn't have to store the lid separately. It would probably be a involved modification tho. Idk im not an expert i just love technology of all sorts and wanna make everything.

Happy Holidays! Enjoy your break!

Thanks for sharing your knowledge, have a good break

I have a pressure cooker that uses the same oval lid design. It's so reassuring to know that the pressure is safely contained. Have a great break. Happy Holidays.

sounds like you really need a break / vacation! have a MERRY CHRISTMAS and HAPPY HOLIDAYs!!!! see ya when you get back!!!

Thanks Robert

As a pressure welder, I was just thinking about getting the material together to make myself a few of these just earlier today and lo and behold, your video on this drops. What serendipity! Many thanks for your videos, you must be a fantastic person to apprentice under. Have an amazing holiday season Robert, and I hope you a healthy and safe new years.

Thank you.

Happy holidays.

Have a great holiday! see ya next year.

Hi Robert! I am writing to you from Ukraine. I have long wanted to make such a camera, but the simplest version of manufacturing did not come across. After watching your video, KZfaq began to recommend me similar videos with cameras made according to this principle. Back in the fall, I bought a 50-liter propane cylinder with a wall thickness of 4mm. The perfect blank for such a camera. In January I will order waterjet cutting of metal for the lid and will weld myself a large chamber. And I wish you many years of life and remain as cheerful as in the video!

Thank you very much too sir,

Retrospect viewer Find your pace... tune that pace. Tune in time off the best you can. 🍀😎🤜🏼🤛🏼🤓💫

50 PSI pressure are around 3.5 bar. As such, air bubbles in castings become 3.5 times smaller in size when pressurized inside the pot (since earths atmosphere is around 1 bar of pressure at sea level). So, the more pressure inside the pot, the smaller the size of the resulting bubble. Lets of course not forget that a car tire has around 2.2 bar pressure and you can easily understand how this thing exploding can deliver vast amounts of terror! :) Merry Christmas Robert! Can't wait for your next videos!

Thank you for your prompt and courteous response. Unfortunately, I don’t get out of the house anymore (guess that may actually be a blessing with some many people getting ill these days) and it is almost two miles from the house to the nearest paved road, so unless Mz Liza is taking me to the V.A. (or buying food) she doesn’t get out much either. I hope you continue to have GREAT Success with your video series, and hopefully some day one of your faithful friends will create a Compact Disk set, so my grandchildren will have something to think about getting for their Granddad some Christmas. Sir, no matter how long we are going to have, Life will always be too short, so try to remember to have some fun Every Day! Stay healthy Be safe And teach people, their profession is how they will earn money during their life But all of us have the Same Job! Choosing how to spend the time we are given. If someone tells you to have a good day, happy holiday or enjoyable weekend. Turn around and tell them, “THAT’S MY JOB!” It is not about what work we do, It’s about How We CHOOSE To Live!” Wish I was a lot younger when someone told me that TRUTH! Da Gunny

You are very generous to share that with us. Thank You. I only wish we could talk about the relative cost to have pressure pots made, VS buying them?

Happy Holidays

If people are going to weld their own anyway (because that's what people do) fill it with water first to test it and pressurise to at least 50% more than the working pressure, as water is incompressible it will stop the tank exploding and any leaks will be obvious.

Thanks for sharing this! Could you say what the seal on the lid is and how it is adhered? You cant imagine the issue of buying a replacement rubber gasket for my 2.5 gallon, paint pot in Canada. I drilled out and tapped the screw clamps on my pot and replaced the thumb screws with bolts so I could get a hard seal for the pressure I wanted to have, but tightening can be stressful before the resin starts to cure. I did buy a silent compressor this year which is magic (when you live in a condo). Is there a max pressure where it no longer makes a difference in the cast quality? Merry Christmas, Robert!

I have a question for you I'm guessing you had the door machined for the seal but what kind of seal did you use did make you make a custom one?

Thank you! Would mounting a hook or bar to hang the lid on help, or maybe a rack up top to set it on? Having the specs makes it priceless. No guessing. Much appreciated for the detail!

How did you make the lid exactly? Did it just get cut out of the steel plate that it goes into? What about the handle? Also why do you need 2 air compressors? Sorry for all the questions. I talked to someone I know about making one of these and he told me to research on where I can buy the lid. He said it looks like a concave lid.

Hey Robert, thank you for the information you give in your videos. I use a resin which gives me only 5 mins then turns into gel. Is it ideal or can a pressure pot do its job in such a short time span. What pressure is required for a fast curing resin. Thanks and wish you an advance Happy Christmas

Could you please advise me on this matter? I am gonna buy the Iwata 850 Smart Jet Compressor, but I wonder if I can also use that tool for vacuum/pressure purposes? Or are those 2 different types of compression (the airbrush one maybe less psi?) Thanks!

thank you for you videos, also where is the best place to get the rubber mold making and resin?

Your videos are incredible, thanks so much! How would you approach minimizing bubbles if casting a large object, say 24 x 24" x 5"? Would you use vibration or some other alternative to pressure pot? Or try to fabricate a vessel with an opening that large?

Excellent Information. What does the pressure do to the resin. Will this work on all resin castings. How many horse power is the compressor? thanks

Robert, it’s a pleasure watching your channel and learning from you. I want to thank you for sharing your knowledge with everyone. Best regards, Richard.

Please do a video on “Wax types and tools used” - I’m unable find “Sticky wax” online… just yellow sprue wax and the only ‘red’ wax I can find is for carving (can this be used to seal wood / plug holes?). Is yellow sprue wax okay to use w/silicon? I don’t think it has sulfur in it but it doesn’t say so on the box and I haven’t tried eating any yet. Also, it looks like you are using a Foredom wax carver - would you recommend anything cheaper? (I’m asking for a ‘friend’ who’s really poor). Are soy-based waxes okay to use? Soy seems cheaper. Apologies if you’ve already done a video on this topic - I wasn’t able to find it on your channel. The only wax related info on youtube and via gaagle is for metal / jewelry casting. Lastly (but should be firstly) - Thank you - your videos are informative, helpful and inspiring and I thank you for sharing your professional knowledge with us.

What about vacuum Chambers?

thank you for the pressure pot info and the 50 psi setting. do you use more than 50 psi and for what reason?

What kind of castings are not put into the tank? Everything else than rotate casting?

A valuable set of ideas here! Thank you. I will be making silicone molds for use in prototyping an automotive vent window seal. Can you tell me in the more black kind of rubber world is molding under pressure still useful? A Few months ago the cheapie compressor on top of our craftsman compressor died leaving behind a nice 30 gallon tank I hope to put to use like this as our molds will be larger than what you seem to be doing. Thank you for your great ideas!

Amazing videos Robert. I confess that I have just come across your channel and within 3 videos have subscribed. Great content, excellent tutorial skills. Unfortunately, I need to ask what may end up being an "I can't believe he asked that" kind of question. Sorry about that. I have had a very long interest in resin casting (with not much success) and watched many videos on the subject. When you come to the question of bubbles, I think I have almost always seem artists talk about using a vacuum chamber for bubble removal. You are the first I have seem that talks about using pressure vessels to do this. Is that because you are reducing rather than trying to remove the bubbles? Again, sorry for coming here with such a newbie question :-(

How much did it cost to make? I love this design.

hi robert, how did it go with the snow globe? you keeping us on a cliffhanger there.. 😜

Huh, that's a plug-type door just like the L-1 door on the Boeing 767 freighter! ^_^

i thought it was a vacuum chamber... that a vacuum would cause the bubbles to leave.. but your adding increased air pressure.. i wont argue with results if thats what works .. Can we do the molds without the chamber, i have this thing about catching shrapnel.

The Toblerone on the tool rack had me cracking up

I'm curious as to how you made the seal on the door. Is it silicone ? Any info will be appreciated. Great channel by the way. God Bless !

I've seen some pressure pots that use a vacuum to suck the air out (which brings all the bubbles up), and I've seen some like yours that pressurize to shrink the bubbles. Is there an advantage of one over the other?

After all the videos I have seen of yours I just realized that this "pressure pot" system of yours is not a vacuum chamber but (duh) the opposite. I made a vacuum pot out of found parts to de-gas my silicone after mixing and it works very well for that but I thought you were casting resin in a vacuum too to avoid bubbles. I'm sure I've seen you de-gas rubber before but there must be a whole other reason to use pressure for casting and the distinction slipped past me somehow. Anyway, thanks for posting. Enjoy some time off and happy new year.

Hello Robert, can you please tell what is the dimensions of the pipe ? or what the volume of it ?

Mocking hysterical mothers is timeless

How thick is the metal of the cylinder section? Half inch like the front?

Question about the blue material you use for '' venting '' ,where do you get it? Thank You sit

Why pressure instead of vacuum?

As soon as I saw this , and wondered about the pressure inside , I thought 4 threaded rods with nuts, holding the back to the front would be a pretty good safety backup . ? what do you all think ?

Think about this guys & gals, At 50 PSI means Per Square Inch. I drive trk & the air dry goes off at 125 PSI, These air tanks are roughly 10" inches across & roughly 30" inches long, figure out how many ''' square inches are in these demotions & then times by the PSI. It's something '' you don't want to mess around with, have it done by a fabrication shop & let them know what it's being used for . Be safe

A negative pressure degasser is cheaper and easier to build. Would it help at all to pull the bubbles out of the resin?

hi, i have question. why pressured pot but not vacuummed pot to reduce bubbles?

What about a safety valve?

Excuse me but what is the max psi can it handle ?