Upgrading a Harbor Freight Pressure Pot to Cast Bubble-free Urethane 

Nice. Very very nice. Just got my pot today and im going to do these upgrades. Thank you for the great ideas.

Oh, wow, this was super helpful. I will have to look and see if you had a follow-up to this video, because... yeah. Awesome information.

this is exactly the video I needed. the pressure pot I got from harbor freight had every single issue that yours did

Heck you got off easy!My NEW pressure pot had a spot that wasn’t welded completely around a fitting on the lid!Had to grind off the paint and finish welded the fitting like it should of been.

This is exactly what I needed right now. Very glad you decided to make this video, definitely had something to add tot he topic others haven’t covered. Just got a Harbor Freight Pot and leaks abound.

Great job!! I really like your approach on problems and the way you solve them!! Keep going!

Exactly the HF gasket is horrible. Exactly about the Loctite I had to get that after many many times having issues with the tape.

Thanks for the video! Your production quality is excellent and I appreciate your approach. I've watched over a dozen videos on modifying HF pressure pots in preparation for my own. You make a great point, the products are not consistent. I'm working on my own currently. For anyone in the planning phase, I suggest you examine your own pot to determine what components you will really need to modify for the design you have chosen. You may not need to change all the fittings, some might be in good condition. Each pot is a little different, based on user needs and inconsistent manufacturing. I purchased my own from HF. I found my gasket has one flat side, the other is curved. I lucked out to have a good gasket. This may have been a recent update to the product. I have no issues with the original gasket, yet. I replaced all the fittings aside from the 1/8" fitting on the inside that diverts the air flow inside the pot. I had hoped to use the 1/4" 1 to 2 tee piece and safety valve, but those pieces turned out to have leaks/were faulty that could not easily be repaired. I ordered a tee piece created from a single piece of metal (to avoid leaks) and a pre-configured 60 PSI safety valve. I am keeping all the original fittings in case I wanted to use the pot in the original configuration for painting in the future. One of threaded holes on the top of the lid is 3/8" and the other is 1/4". This seems to be true of every pot I have seen in all of the videos. There are so many different ways to configure your own. Thanks for the information! I love that you have included the files for the handles. If this becomes an issue with use, I will use your handle modification, that is a great idea!

After alot of work, I found out the silicone used is the GE Advanced Silicone 2™ Window & Door Sealant it took a lot of work to match this product to the video but the decals, coloring and words line up. It also a durometer 15.. I'm 75% sure this is what was used.

"...beat a Harbor Freight pressure pot into submission..." LOL! That's why I"m here! Already replaced this-and-that, modified as needed, but found the gasket keeps leaking between the clamps @30psi.

Amazing channel! Subscribed all the way here.

great video

Wow! Great video, and great solutions to a problem I’ve had for ages now. Thanks, and I ordered your upgrade kit, too!

Hey man great video. I just fixed my HF pressure pot as well. I dont know how much difference there is between what you cast and the epoxy resin that I cast but I do know that I set my pressure between 40 and 50 psi and i can make clear resin that looks like glass now. Again I dont know if you can cast your material at that pressure but if you can that might totally eliminate any bubbles at all in your castings. Also instead of the tape I used high temperature liquid gasket sealer on my threads and after I tightened everything down and let it cure for 24 hours I have ZERO leaks. Ive had a deep pour casting of liquid glass in my pot set to 48 psi for the last 48 hours and the pressure hasn't moved at all. Just an idea I thought I'd share. I see you made this video 8 months ago so you've most likely fixed all your issues by now. But... Hope this helps if you are still having them. Take care man. Thank you for the idea on the 3D printed clamp handles. It's been a workout getting my pot sealed by hand with those little butterflies it comes with. I'm definitely going to figure out how to make some of those.

I was just about to make one of these conversions myself, but the idea of a low quality pressurized bomb worried me. During my research I came across a new product from California Air Tools, where they created a new lid and connection setup for their existing 5gal pot and made a pressure pot for casting from the factory. Woodcraft has a custom model - 365CW, check it out.

Can I purchase just the gasket forming tool from you?

A flat gasket makes absolute sense, you want it to compress in order to seal properly. Why would a curved surface be better in this application ?

Good video. Informative and nice editing.

Can’t wait to see the finished product

Well done my friend...….

I wanted to use the link for the handles and gasket tool. They didn’t work.

Well done.Thanks for the lesson and the inspiration!

I'm way late to the game, but this is a great video that will probably save me some hair pulling. One comment though. By making a plywood base and running the handle thru the center, you have restricted the width of castings that you can place in the pot by one half. I've been doing a lot of pre-conversion research and someone said (and it makes sense) to just level the pot and pour in enough resin to bring the surface up above the curve bottom. Just let it cure hard, no need to worry about bubbles because it's just the base that your real castings will sit on.

whats the piece called that you used to raise the parts up higher out of the way of the clamps? i need that badly lol

Hello friend, can I buy molds and the pressure cooker with you?

Question any reason why silicon won't cure underneath, I tried to clamp down and a lot oozed out(1.5 days after I placed it).

You do know they make a Teflon paste for threads that might have worked better for you.

Do you still have links to the digital downloads for these fixes? It seems as though the links in your description are not “clickable” anymore. Thanks in advance!

Great video! I was wondering if you had a link for urethane as well? Thanks dude!

I had the exact same problem with the locktite never curing where everything is attached to the lid. I think it's the powder coating or something inhibiting the locktite grin curing. I ended up just sticking with plumbers tape at the one spot. Any luck since this video with getting that spot to cure?

My regulator leaks bad out the t-handle. What regulator did you get to replace yours?

QUESTION! : May sound silly but.. did you remove the old gasket prior to adding your new silicone?? Thanks and hope to hear from you soon!

I know this is pretty late, but what kind of silicon did you use for the gasket? Leaks from the lid seem to be the only issues i'm currently having with my setup

would be so cool if you made some wheels! where would u source ur cores from?

I was thinking that that pressure pot may have been designed to use with a liner that’s why you had so many leaking issues with the gasket just a guess

Hey new Fan just came across your Video and it specks to all my problems I'm having. I have a few Questions..... 1. When you printed your MODs for your pot what filament did you use? PLA, PETG, or ABS? "I know the Gasket MOD it don't matter as that's a scraper so it doesn't matter.," 2. The handle adapter with you turning them what kinda print settings and filament do you recommend? 3. When you spoke about the 100% silicone and to the Durometer it saying it's 15. What is your recommendation here? 4. And last, You got a new Pressure Gage in a few videos later can you post a link to what you got? Great job. I'm having the same problems here with getting a good seal I'm losing a pound every 10 to 20 mins here... I hope making a new gasket or getting better torgue will help me in my lose of pressure. Or even just replacing my Gage. Sorry for all the question but out of all the Video's out there yours spoke the most to me... Thanks so much !!!!

So it's been a month. How has the gasket held up?

How much you want for one of those homemade gaskets?

Yep, i had to make a silicone gasket and replace the regulator lol