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

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Good Roads

Good Roads

4 жыл бұрын

The Harbor Freight pressure pot I bought was a lemon, so the standard approach to converting it for casting wasn't working. Here's how I expanded on the work others have done to get these pots working for casting urethane.
Don't have a printer? Let me print you an upgrade kit:
www.goodroadsc...
Want to support the channel? Check out the Patreon:
/ goodroads
Or grab yourself something from the shop:
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Based on the conversions by Zac Higgins: • Setting Up a Harbor Fr...
And Rybonator: • Casting Clear Dice Pt....
Loctite 545:
www.amazon.com...
Print file for the handle adaptors:
mmf.io/o/127405
Print file for the gasket forming tool:
mmf.io/o/127398
IG: @chrisfromgoodroads

Пікірлер: 69
@imdeaded
@imdeaded Жыл бұрын
Nice. Very very nice. Just got my pot today and im going to do these upgrades. Thank you for the great ideas.
@sushislicer3742
@sushislicer3742 3 жыл бұрын
this is exactly the video I needed. the pressure pot I got from harbor freight had every single issue that yours did
@damianbrynn8372
@damianbrynn8372 8 ай бұрын
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.
@mrmattdollar
@mrmattdollar 3 жыл бұрын
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.
@GoodRoads
@GoodRoads 3 жыл бұрын
Glad it was helpful!
@emanuelecurioni8950
@emanuelecurioni8950 4 жыл бұрын
Great job!! I really like your approach on problems and the way you solve them!! Keep going!
@GoodRoads
@GoodRoads 4 жыл бұрын
Thanks! That's the plan: keep at it
@missviolette22
@missviolette22 3 жыл бұрын
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!
@pricetag30
@pricetag30 2 жыл бұрын
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.
@vegasrealproperty7125
@vegasrealproperty7125 2 жыл бұрын
Amazing channel! Subscribed all the way here.
@chezwessling5127
@chezwessling5127 2 жыл бұрын
Wow! Great video, and great solutions to a problem I’ve had for ages now. Thanks, and I ordered your upgrade kit, too!
@whelen35
@whelen35 2 жыл бұрын
Good video. Informative and nice editing.
@CptWashu
@CptWashu 3 жыл бұрын
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.
@GoodRoads
@GoodRoads 3 жыл бұрын
Sorry for the lack of clarity on that, I tossed the bottle assuming that 100% silicone is 100% silicone. Hopefully there are a lot of viable options in hardware stores out there, thanks for doing the digging!
@CptWashu
@CptWashu 3 жыл бұрын
@@GoodRoads I live in a small town where walmart is the closest we have to a hardware store. So I had to do the digging. But hey I'm pretty sure I found the right product and if nothing else least the Durometer matches up it makes it easier for others to find it. I'm going to redo the seal on mine I used one with a higher durometer and it's leaking so I don't think that one's flexable enough. Hence why I did a lot more research into this. Hope this works out for me.
@rsmolens
@rsmolens 2 жыл бұрын
great video
@asorosa7409
@asorosa7409 4 жыл бұрын
Can’t wait to see the finished product
@GoodRoads
@GoodRoads 4 жыл бұрын
Vid will be up this Friday!
@johndowns4161
@johndowns4161 Жыл бұрын
Exactly the HF gasket is horrible. Exactly about the Loctite I had to get that after many many times having issues with the tape.
@louisclarkeii
@louisclarkeii 3 жыл бұрын
Well done my friend...….
@boomburp3903
@boomburp3903 4 жыл бұрын
Well done.Thanks for the lesson and the inspiration!
@keithkelley7512
@keithkelley7512 2 жыл бұрын
Can I purchase just the gasket forming tool from you?
@TemplarIRL
@TemplarIRL 3 жыл бұрын
"...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.
@TemplarIRL
@TemplarIRL 3 жыл бұрын
Fun fact: I found no thread tape during disassembly... Rather, I found thread lock. -.-
@GoodRoads
@GoodRoads 3 жыл бұрын
I had a mix of the two in mine, what a weird setup right?
@brycerairden7946
@brycerairden7946 4 жыл бұрын
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.
@GoodRoads
@GoodRoads 4 жыл бұрын
Thanks for the heads up! I was looking at California Tools' stuff and their pots look like they're just better quality in general. If they've got a pot lid thats already meant for casting I'll 100% go that route when I upgrade
@kearaghan4999
@kearaghan4999 2 жыл бұрын
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
@Brooke-jw7vv
@Brooke-jw7vv 2 жыл бұрын
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!
@TheDalejr881
@TheDalejr881 Жыл бұрын
I wanted to use the link for the handles and gasket tool. They didn’t work.
@Tonatiuh_one
@Tonatiuh_one Жыл бұрын
Hello friend, can I buy molds and the pressure cooker with you?
@ChrisDubya311
@ChrisDubya311 3 жыл бұрын
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.
@GoodRoads
@GoodRoads 3 жыл бұрын
Thanks dude! I have been running mine at about 45psi and getting great results too, that seems to be the magic number. I'm happy to report that all my upgrades and repairs have been holding up great. The pot holds pressure for at least three days, I haven't had to contend with any longer cure times than that
@sierraecho884
@sierraecho884 Жыл бұрын
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 ?
@N641991
@N641991 2 жыл бұрын
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).
@GoodRoads
@GoodRoads 2 жыл бұрын
My silicone deformed a little bit after getting clamped in place but it didn't flow out of the cavity. Check the bottle your silicone came in? Maybe the curing conditions weren't right?
@vampcaff
@vampcaff 3 жыл бұрын
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?
@GoodRoads
@GoodRoads 3 жыл бұрын
Yeah, I just cleaned the fittings off with acetone and got them threaded a little tighter the second time around. I've been using it without issue for months
@BlueLightSpecial2023
@BlueLightSpecial2023 2 жыл бұрын
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.
@mortgagesavingsplanner7119
@mortgagesavingsplanner7119 3 жыл бұрын
Great video! I was wondering if you had a link for urethane as well? Thanks dude!
@GoodRoads
@GoodRoads 3 жыл бұрын
I've had good luck with the 80a and 90a urethane from these guys: specialtyresin.com/product-category/flexible-casting-resins/
@jasondilly7955
@jasondilly7955 2 жыл бұрын
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!
@GoodRoads
@GoodRoads 2 жыл бұрын
I did! Pulled it out with some needle nose pliers
@jasondilly7955
@jasondilly7955 2 жыл бұрын
@@GoodRoads great! Thanks for the feedback! Currently using your STL file to help mold the lip of the lid! Such a help!
@the_aerec
@the_aerec 3 жыл бұрын
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
@GoodRoads
@GoodRoads 3 жыл бұрын
I actually don't know, I don't have the bottle any more, but it was just a standard 100% silicone that you'd get at a hardware store for doing bathroom work or sealing windows or whatever. Look for it by the caulk guns
@Bludragon41
@Bludragon41 3 жыл бұрын
@@GoodRoads I believe the 100% silicone is usually type I silicone too, since I don't think type II works in this type of application.
@sgraf1970
@sgraf1970 2 жыл бұрын
My regulator leaks bad out the t-handle. What regulator did you get to replace yours?
@GoodRoads
@GoodRoads 2 жыл бұрын
I got one that's intended for use with air power tools: www.amazon.com/gp/product/B07PMNXPWQ/ref=ppx_yo_dt_b_search_asin_title It's great because since it's so small it's out of the way of the handles on the pot. The only issue is the dial is upside down but that's no big deal
@dangonzalez4000
@dangonzalez4000 4 жыл бұрын
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 !!!!
@GoodRoads
@GoodRoads 4 жыл бұрын
Hey! I printed the handles in PLA, though you're right, something strong could probably be better. I think I did five walls and 30% infill at a 0.4mm line width? They're holding up so far, I figure if they break I can just print better ones. The silicone is actually working out. I think something in the 20-30a might live a longer life, but I'm not having problems with the 15a stuff. And this is the pressure regulator I ended up going with, it has also been working great: www.amazon.com/gp/product/B07PMNXPWQ/ref=ppx_yo_dt_b_asin_title_o06_s00 I feel you, putting all the effort into the conversion just to have the pot leak is a real downer. With all of that stuff in place my pot seems to be holding pressure at 45-50psi for as long as I keep it clamped, I've even had a couple casts in there for more than 24 hours. Good luck!
@AnthonyPotts
@AnthonyPotts 3 жыл бұрын
@@GoodRoads You know...you could use the printed handles to make a cast for making resin or polyurethane rubber handles...
@Baldmanblades
@Baldmanblades 3 жыл бұрын
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
@mostskuxxboy
@mostskuxxboy 4 жыл бұрын
would be so cool if you made some wheels! where would u source ur cores from?
@GoodRoads
@GoodRoads 4 жыл бұрын
No idea! I could cast some out of a harder urethane, and I'm also toying with the idea of 3d printing them with one of the "tough" resins
@mostskuxxboy
@mostskuxxboy 4 жыл бұрын
@@GoodRoads 3d printing would be so cool to get some interesting core shapes !! I feel like you could contact a facility like AEND or Labeda and see if you could buy some of the cores used in otang/sector 9/ abec 11.
@GoodRoads
@GoodRoads 4 жыл бұрын
@@mostskuxxboy Thanks for the tip! I have such a hard time finding the manufacturers who are "deeper" in the industry. I'll look into the ones you mentioned!
@whysguy1340
@whysguy1340 Жыл бұрын
You do know they make a Teflon paste for threads that might have worked better for you.
@thomasmcdaniel1095
@thomasmcdaniel1095 4 жыл бұрын
So it's been a month. How has the gasket held up?
@GoodRoads
@GoodRoads 4 жыл бұрын
Very well. I just did my first 48 hour cast last week. The gasket deformed a bit when i first started using it, but it hasn't moved much since and it does a great job of holding pressure.
@thomasmcdaniel1095
@thomasmcdaniel1095 4 жыл бұрын
Ive considered using black gasket maker from the automotive store. The biggest concern I have personally is with the wing nuts not tightening down. I love your adapters, sadly i don't have any access to a 3d printer. Any suggestions?
@GoodRoads
@GoodRoads 4 жыл бұрын
I looked into whether the print-on-demand services would be a cost effective way to get the paddles made, but for what they charge you could buy a used monoprice mp-select and just have a printer. Someone mentioned that some libraries have printers, so that might be something to look into. If all else fails, you're just trying to get more leverage on the knobs, so you could make something out of wood. It might not be pretty but it should work.
@dangonzalez4000
@dangonzalez4000 3 жыл бұрын
@@thomasmcdaniel1095 Hey Tom, If you really wanna get these upgrades i'd be happy to print them of for you. just pay shipping.
@johnpellegrini1599
@johnpellegrini1599 2 жыл бұрын
How much you want for one of those homemade gaskets?
@GoodRoads
@GoodRoads 2 жыл бұрын
The way the silicon gets formed bonds it to the pot, unfortunately it's not the kind of think I can make multiples of. Sorry dude, it would certainly be nice if there was an easy pre-fab option out there
@AroundTheSouth327
@AroundTheSouth327 3 жыл бұрын
Yep, i had to make a silicone gasket and replace the regulator lol
@Bludragon41
@Bludragon41 3 жыл бұрын
Did you have to wait for the acetic acid smell to go away first? I noticed that some of my resin parts that were exposed to the smell during the cure process were tacky after I took them out.
@AroundTheSouth327
@AroundTheSouth327 3 жыл бұрын
@@Bludragon41 actually to make an update here. It didn't work. What has though was getting better bolts. I had to re drill and tap the "wings" for that and i use a drill set to a low toque level to tighten them. That all worked great.
@Bludragon41
@Bludragon41 3 жыл бұрын
@@AroundTheSouth327 Thanks for the update! I appreciate it. 😊
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