Resin Casting: Pressure vs Vacuum

I finally got a pressure pot. Now, why would I want a pressure pot and how is it different from a vacuum chamber?
Let's talk about that!
HF Pressure Pot Setup Video: • Setting Up a Harbor Fr...
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[@JimsonMakes]

I’ve given up trying to de-gas resin in a vacuum chamber, I just use the pressure pot now for getting rid of the bubbles. The vacuum chamber is great for degassing silicone and of course stabilisation. Cheers Jim

[@peterbrownwastaken]

I agree with you. It's so much more reliable.

[@xzendon]

What would the effect of pressurizing the champlber with pure oxygen be? Especially if you had some kind of agitator in there to mix in as much gas as possible. Would you get a hypercombustible brick of death? Or just a block of plastic that slowly seeps O2?

[@ExaltedDuck]

One advantage of vacuum degassing is that the material can be degassed and then poured in molds that might not fit in a chamber of either variety. Having vacuumed degassed stuff like this more than a few times, I'd recommend a container wide enough so that the resin doesn't fill it more than 10-20%. I just leave the release valve open and cover it with my thumb until the material almost overflows, then pop my thumb off until the pressure goes about halfway back to normal (without a gauge, just let the material settle down to about it's original level). But given the results of this video, it does appear than pressurization might be the easier way to go if the mold does fit in the chamber.

[@JimsonMakes]

Yes degassing resin certainly has a place but for the sort of work I do the pressure pot works better. The temperature has to be right for degassing to work and it needs to be done quickly. There is a danger of boiling the resin under a strong vacuum, which I think is what happened to Peter in this video.

[@Oomuu]

Looking at it from an electrical engineer point of view, you could have a cheap 4 dollar ebay IR light (or a simple laser/receiver pair) shine on a receiver and position them right above your inner bowl, when the stuff foams above the bowls height it will interrupt the lights ability to shine on the receiver and have that communicate with a pressure switch (solenoid?) of some sort to let some pressure back in so you can just run it continuously without having to worry about it. You could make something like that with audrino for around 20-30 bucks and I dont see why it wouldn't work for everything including resin. The constant cycling of pressure>vacuum>Pressure>vacuum would work perfectly to remove all the air if done constantly by allowing the bubbles to collapse and pop instead of a constant vaccuum/foam mess, then follow it up with the pressure chamber thing should smooth it back out quickly before it drys....and should make your resin almost perfectly transparent.... or a strong pump paired with the smallest possible chamber with the pump and pressure timed in short intervals to keep repeating high>low>high>low pressure to pop and draw out the bubbles a least 3 times faster then in the video....and the short intervals will stop it from foaming over if timed correctly.......then the sudden pressure when then after, it is put in a pressure chamber...should make it even more clear than your clearest result in this video..

[@nessagirl1911]

It would be awesome if the resin would set as the foam, or solid on the bottom and with foam on top. It would look like blue beer.

[@peterbrownwastaken]

We were both hoping for that. I MIGHT have to try that in the future, but I sort of can already do that with the lava effect.

[@rastas000]

OR, add a little moisture to a polyurethane casting resin... Makes a great foamy top for a beer art piece.. Such are the things one learns from ones mistakes!! (I used a moisture sodden stirring stick to mix my resin)

[@smash5967]

I wonder if using a faster setting resin might allow for that.

[@minecdiamondcrafters]

You should try getting it all foamy and then turning off the pump to hold the foam where its at and the letting it cure

[@SixKoi]

He's done that with the resin that boils when certain dyes are mixed with them, if I remember.

[@johanneshalttu9047]

Dental technology student here! We use best of both worlds for gypsum and silicone, first vacum mixer for 30sec to 1min and after that we pour the cast on a vibrating table and put the cast in the pressure pot for curing :) Thanks for your awesome channel, i love it!

[@SeraphimKnight]

Under pressure... dun dun dun du-du- dundun...

[@bunkertons]

👏👏👏

[@peterbrownwastaken]

this makes me happy. You know I long I searched for a font where the R had that swoopy bit?

[@TripleGatan]

@@peterbrownwastaken worth it

[@SeraphimKnight]

@@peterbrownwastaken It worked, I only glanced at the thumbnail and had the song in my head.

[@josuelservin2409]

@@peterbrownwastaken, We appreciate the effort.

[@HarnealMedia]

That's a dramatic way to prove a point that resin casters have spoke of for years. Very good job Peter. It made for an interesting result

[@peterbrownwastaken]

Thanks!

[@Karasuraven0395]

I dont know why but seeing the resin foam up like that was kind of satisfying. I could honestly watch hours of just that lol

[@Sorarse]

The problem with a vacuum is that the boiling point of any liquid falls with a drop in pressure. I don't know what the normal boiling point of the resin you were using is, but it's conceivable that it is at room temperature when you drop the pressure that much, and the resin was actually boiling, which is why you got so many bubbles. It's the same principle that creates cavitation behind a boat's propeller.

[@RebeccaFyre]

This is exactly how Games Workshop make their ForgeWorld models. Using silicone moulds and black resin, it gets degassed twice, 45 seconds each time then left to set for an hour before being removed, I did the job for 2 years :)

[@nohowahay4179]

Hi Atomfire, how did they degas it?

[@RebeccaFyre]

@@nohowahay4179 with a large vacuum chamber, the size of a school dinner tray(ish). Suck the air out leave it for a min and degas, then do it again, degas then send it off to the other guys to take the parts out the moulds

[@nohowahay4179]

@@RebeccaFyre Thanks for the quick reply. So they used a vacuum chamber instead of a preassure pot.

[@RebeccaFyre]

@@nohowahay4179 yeah just because the moulds are big, as you can imagine with some of the figures.

[@nohowahay4179]

@UCdW-U0aqDxAknXcxnVMPY_g Thanks again. Just wanted to know. So if you do it right you can indeed manage to degas with a vaccum chamber and the test above is just somehow not done correctly.

[@AaronTheBlackDragon]

I really would love to see if you could make a resin foam cast from your vacuum.

[@ShineHatfield]

He can, he just needs to use a fast-cure resin. Edit: resin, not reason lol

[@MusicFurler]

AaronTheBlackDragon he's already found that he can make a foam looking resin. He calls it Lava.

[@bushwoogie]

@@MusicFurler that's a little more sponge looking I can see the value In a foam like casting that looks like the resin in the vacuum chamber.

[@SparkieNeisti]

I wanna see that resin foam set like that! Looks awesome.

[@BitchyBoxxy]

Sparkie3222 I think a similar one is when he made it go into thermal runaway and it made a very bubbly cast. It was set in I think under 5 mins. I’ve worked with resin for epoxy floors that have gone wrong in very hot days. By the time you mixed it to walking down hallway it was boiling over and setting up.

[@RK4000]

It would resemble expanding foam used in insulation.

[@AaaaNinja]

Go to The Kind of Random's channel he has a video.

[@lucjhaina8372]

A ninknnjjniooojojlnknjioojmiknnn

[@yumek06]

Thank you so much for explaining the pressure pot method of curing resin! It makes so much sense now! I'd see other makers like Nick Zammeti use it and never understood why. Also, I always love seeing makers add new tools to their arsenal and experimenting with them. I love watching your videos and can't wait to see your new creations!

[@timberdish]

Very interesting and somewhat ridiculously well timed - I was just starting to look into getting one or the other for resin turning projects. So thank you very much :)

[@TupmaniaTurning]

Matt Jones - Me too! Now we know!

[@stephss]

Art resin is by far the most bubbly resin I've used... so good choice on resin for the demo. #artresin

[@f4z0]

After seeing that clear casting in the pressure chamber i wonder of you could make one of those crystal skulls from indiana jones they should look amazing

[@doveoo5]

Just this week I was looking at the Crystal Skull vodka bottle on my shelf and thinking about a silicone mold....

[@f4z0]

doveoo5 if you try it post the results, my inner child would geek the hell out of anything related to indy

[@JimsonMakes]

I cast a clear skull on my channel.

[@charlesbonkley]

Cast a full-size replica of the lead-lined fridge to commemorate such an awful scene.

[@sum1liteamatch]

Another off the wall, over the top, and educational video as usual. I always look forward to your videos.

[@belac48621]

I was just thinking today when your next video was going to be put up. And here it is!

[@andrewhausman393]

Same, I had that thought 30 mins prior to this upload. I'm putting the Alexa in the cupboard for a while.

[@doveoo5]

@@andrewhausman393 Positive thoughts, dear. Positive thoughts. Thank you. ( made my day, ty)

[@DaveDodd]

Gotta say...I'm subscribed to a lot of channels...but i get the most excited when i see a new Peter Brown vid :P

[@kbosell3812]

Me too

[@This1unbox]

Yaaaas!

[@Waterflame]

I've been watching a lot of videos by Nick Zammeti lately, so I was hoping you'd also get into the pressure pot game! Can't wait to see what awesome creations you make now!!

[@SauceySiren]

Waterflame I was thinking the same thing. He’s been in the pressure pot game for awhile lol

[@RangaBonsai]

Amazing! Love watching and learning about new maker strategies I’ve never heard of before

[@rastas000]

Depending on the thing I am casting I have used the vacuum pot to degas the silicone and then cured under pressure to reduce deformation if I am casting a clear part (lens covers) that I want to have crystal clear by curing under pressure... An understanding of Boyle’s Law helped me work out what was happening.. Loved the demo..

[@JLK89]

Vacuum is below the alcohol dye's vapour pressure. Don't add it if you want to use vacuum.

[@LoganDark4357]

vapor

[@JLK89]

@@LoganDark4357 only in the US

[@LoganDark4357]

which makes up the majority of the English language

[@himynameishelen]

@@LoganDark4357 But it's literally called "English" so maybe respect that English people spell things differently to you and don't be rude.

[@JGnLAU8OAWF6]

@@LoganDark4357 are you sure? More than a billion people in the world speak english...

[@MikeWaldt]

Great video Peter ... I don't "do" resin, but still watched every foamy second. Take care Mike

[@sinphony9835]

Peter's videos are the highlight of my week. They just make me happy.

[@MohamedAhmed-zi1ru]

I can't believe that the king of epoxy didn't have a pressure pot for all of these years .. while everyone else was using it u were just talently bublle-freeing ur cast with a blow torch .. now that u got one i will still call u the king of epoxy and i know how hard it is to bubble-free complicated casts hope we all have fun with it

[@markrobison5199]

Obligatory "you should turn that pressure pot resin on the lathe" comment

[@Scott_C]

Second!

[@twilightsparkle75]

what an awesome eevee avatar

[@seriouslyintolife]

Peter could you try a small amount of fast setting resin in the vacuum chamber and see if you can get it to set as foam?

[@rallekralle11]

i wonder if it'd implode when the vaccuum is removed

[@fishsticks2965]

@@rallekralle11 it would not ^^

[@Fitz1993]

Would it even set in the chamber? What with the constant movement and lack of oxygen? I might be comparing resin to concrete a little to much here...

[@noname_atall]

@@Fitz1993 resins, generally, don't react with oxygen to solidify, they either react with themselves thanks to a catalyst or one part reacts with the other. so at to the constant movement, it will slow down as the resin get thicker. things like gelatin don't set while moving because they rely on reversible interaction between molecules, resins rely on permanent and not normally reversible chemical reactions.

[@Fitz1993]

Oh wow, thanks for that response, thats pretty fucking sick. So what will happen / potentially happen to the cavities left if you were to set resin in a vacume chamber? I guess nothing if the cavities are sealed in resin?

[@crashandburn22501]

Wishing you the best for the future with the pressure pot. Can't wait to see what you come up with.

[@CFGossettAbbasHealingArts]

Peter, You have some of the coolest videos I have ever seen. I've also learned stuff from your videos. Keep on keeping on. You and Nick Zametti are my favorites on KZbin.

[@Thingsthatgopew22]

It is NOT air going off in the vacuum, it is some of the solvent boiling off. And not a single youtuber understands this. Amazing.

[@MrEfarmer]

Agree!

[@TwoScoopsOfTubert]

Interesting - are there actually volatile solvents in the components? Would those not spontaneously form bubbles even in a regular atmospheric cast?

[@RobertSzasz]

@@TwoScoopsOfTubert it depends on the resin, material being cast or used as reinforcement, and any additives Degassing resins with vacuum and then pressure casting is pretty common and really effective

[@MakeThings]

WGwireless that’s really besides the point. If we were working with resin and non stabilized wood you would have problems with air bubbles from the wood. Pressure casting is the only method that makes sense unless you find a different method that doesn’t create the solvent bleed off and you’re using wood (or any other material) that had absolutely no air in it.

[@peterbrownwastaken]

OK. I now alone understand it. I'M A VESSEL FOR YOUR WISDOM.

[@TheRyanjMain]

pressure pots remind me of the movie flubber

[@Guru_1092]

They remind me of a marathon that occurred on the East coast. Oh... wait.

[@MsCherade9]

@@Guru_1092 Can we not?

[@Guru_1092]

@@MsCherade9 :D

[@TheRuko15]

I'm so glad you did this video! I've been wondering for so long why people use pressure pots to "remove" bubbles, instead of using of a vacuum chamber.

[@phantom715]

You are the highlight of my KZbin playlist. Keep it up!

[@csis8460]

What you gotta do is let the resin foam up, then you break the bubbles (let air in) and re do until it's only pulling air out without foaming up

[@MyBallzGotShocked]

I would just reduce the pressure in the vacuum slowly. Instead of allowing air into the vacuum to raise the pressure, use a needle valve on the pump side to reduce the flow out.

[@MysticalRhythms]

I think the alcohol dye was just boiling off in the vacuum chamber. I'd like to see this again without the dye.

[@markf.4063]

It would be the same. When you put any liquid in a vacuum you lower it's boiling point and it turns to vapor. Those bubbles you see in the resin are just that, vapor.

[@StoneAndersonStudio]

But the alcohol is boiling off, which may have a difference in the amount of off gassing that occurs as opposed to just the resin. I agree with MysticalRhythms- it would be super interesting to see one in the vacuum chamber without the alcohol dye.

[@1972Russianwolf]

@@StoneAndersonStudio Epoxy resin will boil at room temp when under vac. Art Resin is an epoxy.

[@KristenK78]

Also, I’d want him to take more normal care to not stir air into it before putting it into the vacuum chamber. The extra bubbles proved the capability of the pressure chamber to correct for that, but it seems unfair to compare it directly with the vacuum under less than ideal circumstances.

[@sammartin2725]

With out the dye you get the same results made a mess of my vac chamber I did not have a clear top but part of the side was clear and it filled full of foam verry quickly with nothing but ENVIROTEX LIGHT ,.

[@themajesticwierdo2193]

This was so neat to watch! I'm glad you showed us how both acted. Love it!

[@mancraft18]

I'm just glad you're back to making videos on the regular I missed you. You and a few others are the very inspiration for the channel I'm trying to create now thanks Peter... Everyone should have a little pet... A little brown... You in they're life

[@davidgreen5099]

When i debubble in vacuum, i wait til the resin almost crests, relase vacuum, let bubbles pop, and repeat. Over and over until it stops rising.

[@stefanl5183]

Yes, I think you're very much correct here and this would be the technique that would be preferred and not the way it's done in this video. With vacuum, you wouldn't absolutely need to maintain the vacuum constantly until the resin hardens the way you do with pressure. That's because with vacuum, you are sucking the air out. Once you successfully get the bubble to the surface and they pop, you'd be done. Therefore cycling it on and off would make more sense. The cycling might also help move the bubbles to the surface because of the agitation it would also produce.

[@LadyTea]

@@stefanl5183 Wouldnt you want to degas, aka boil out the air of each of the base and the hardener separately? Then mix them together and then degas one last time. then poor.

[@flyingwoodshop1545]

@@LadyTea I THINK (not sure) most of the air is introduced during the mixing process. At least that's how it looks when I do it. But I'm using the resin as a filler for knots and splits, not for casting. This video was interesting to me, but the pressure method really only works for casting. If you want to degas the resin and then pour or spread it onto the wood, the vacuum method is the only one that will actually work. Good thing that I only have a vacuum chamber and not a pressure pot!

[@TheTacticalPainter]

By chance could some of the foam been caused by the alcohol boiling while in the lower pressure? Just like boiling water at room temperature in a vacuum chamber?

[@jamesgrimwood1285]

I was also wondering if the bubbles were partly caused by things in the resin boiling, rather than air being pulled out.

[@TheTacticalPainter]

@@jamesgrimwood1285 I think you said it right, "partly," the resin will bubble like this anyway, but I think it was this violent because of the alcohol.

[@markf.4063]

Not just the alcohol. ANY liquid in a vacuum will boil off.

[@MGMakes]

Thanks Peter, I was looking to up my resin game and was indecisive about what to purchase, thanks for pointing me in the right direction. 👊👊👊

[@CrimsonWabbit]

I love watching your videos. I've clocked away from something else so many times. Lol Always entertaining and informative. I'm excited to see the projects your able to make now!

[@acroque]

I was waiting for the polish part :(

[@peterbrownwastaken]

next video! :)

[@kbosell3812]

Woohoo!!!

[@Shardok42]

@@peterbrownwastaken Do I sense a translucent blue bracelet in the future?

[@GMM5Art]

No need to polish, that thing came out crystal clear.

[@heavystalin2419]

For all i know, it got split in 2

[@almagill]

OK, so, quick back of a beermat calculation.... pressure increases by about one atmosphere (15psi) with every 10m deep you go under water.. 50 psi would be what, about 35m down? Maybe 40 ish? Right, whose got an atmospheric diving suit we can put Peter in and is there a resin that'd set under water... Y'know, for science and stuff...

[@karol30660]

You can easily do 40m in a wetsuit or drysuit and you won't feel a thing

[@echoedinnocence]

FOR SCIENCE!!!! 🧐👩‍💻👩‍🔬🕵️

[@Shardok42]

Or... we put the resin in the pressure pot before sending Peter down into the water with diving gear and then he pressurizes it while underwater!

[@SBVCP]

@@karol30660 i ventured into the 4 meters...once.

[@SBVCP]

wouldnt the pressure be held OUTSIDE the container, or you are suggesting water-pressure? or some kind of flexible thing? i wonder if a plastic bag would work... Can you imagine? "pressure casting resin with a ziploc bag under the sea"

[@BettyOs]

Very excited for your next project!

[@mikejohnson219]

Awesome awesome awesome video!! I just learned about this technique and didn’t understand the differences until seeing this. Learned A LOT!! Thank you so much for making this video!

[@JPKenneys]

I feel like every time I've seen someone use a vacuum with resin they've had to cycle the vacuum to avoid the boil over

[@VideoGameCathedral]

Asking for for years? He's finally making a cereal bowl out of cereal!

[@robinsonvargas1467]

Thank you I have ask many woodworkers about the difference between the two and you just gave me the answer plus an excellent demonstration.

[@markinstlouis]

Thanks for sharing this. I've been considering getting into casting, and I needed this question answered. NOW I get it!

[@reeepingk]

I think what you want to do with the vacuum chamber is let the air back in FAST when it almost overflows. Then it'll actually pop the bubbles. (At least that's what I understand from watching the king of random.)

[@cameronpolite8514]

Kyle R no it’s just they don’t think about it bubbling up. The vacuum will pull it out if it’s left.

[@RobertSzasz]

Cycling the vacuum can pop bubbles, You want to pull the vacuum, then release it while the resin is still liquid.

[@MakeThings]

This is all well and good but this is argument you make is an argument that focuses solely on casting a pool of resin. Add wood that has not been stabilized and you have to deal with the bubbles from the wood too.

[@markf.4063]

Also of note, not all vacuum pumps are the same. I have no clue as to which he uses but it would be interesting to see how a better pump fairs in this regard. Perhaps a 2 stage pump would pull faster in this material.

[@nifty1a]

That's what I had to do when I worked potting sensor electronics for aerospace sensors, vacuum each component before mixing, mix and degass again the pour into mould and degass again. Degassing is done by vacuuming until foam nearly crests container, then rapidly bring up to atmosphere, then repeat until no foaming occurs. Did it for about 2 years... For actual space use, they use vacuum degassing, and then cure under pressure as well. you don't want air trapped in cured resin in a hard vacuum as it will explode and crack....

[@Typersx1]

Wonder if mrs. brown thinks you cray cray. 🤔🤔🤔

[@peterbrownwastaken]

undoubtedly

[@daisyrushton1574]

To be fair she’s pretty cray cray too, she handles a blowtorch like blam

[@Telemachus2814]

Mrs. Brown likes to burn the things Peter creates... or anything really. Check out their "Burn it" series. I'm sure she thinks he's crazy, but she probably also likes it. His crazy probably works with her crazy.

[@MsCherade9]

@@peterbrownwastaken I'm sure that's why she loves you, we all secretly love a batshit lunatic from time to time. In moderation...

[@ristube3319]

Typersx1 She doesn’t complain at all anymore, FYI, don’t go digging around in his backyard.

[@krystalboudreaux9405]

Thank you!!!! I've been searching all morning for a definite answer and a video that explains it clearly. This helped alot.

[@kittycobbs3501]

Yes! Super excited for this after a very anxiety filled day today

[@nexus01gr]

No control piece?

[@peterbrownwastaken]

I suppose my whole channel is a control piece. Even at my best, I still normally get one or two bubbles in a casting.

[@MohamedAhmed-zi1ru]

😂😂😂 What an answer

[@cosmicrdt]

Black beard projects did a video on this exact same topic yesterday

[@peterbrownwastaken]

who? That's hilarious... :)

[@coldstub]

I've been wondering for ages what the difference between a pressure pot and a vacuum chamber were in terms of resin quality, thank you so much for this video it was incredibly helpful to me.

[@KelseeBeth]

I knew what was going to happen, and I enjoyed watching it immensely!!!

[@seigeengine]

Would the alcohol dye be vaporized in a vacuum?

[@hanelyp1]

Or some other solvent in the liquid resin? Would chilling the resin before mixing make a difference?

[@markf.4063]

@@hanelyp1 The alcohol would be vaporized and the pigments left behind but that would happen at atmospheric pressures as well.

[@kst357]

There's no way the resin had that much air in it. I think that the vacuum's negative pressure was vaporizing the chemicals/solvents in the catalyst. Maybe using less vacuum would draw the air bubbles out without causing vaporization of the casting resin. I'd try slowly raising the vacuum until the resin starts to vaporize, note the PSIV, & then set your vacuum below that level. I've seen epoxy resins that didn't foam at all under vacuum. Maybe the foaming has to do with the type of chemicals used in the resin, meaning that some resins will work under vacuum & others won't.

[@susantipsyhealy7655]

i agree, cactus juice will boil over , feathering the vacuum will control that unitl it is pulling the gasses etc out without foaming over. granted, it takes time but get good results.

[@dougalexander7204]

Peter, good to know. Thank you for your comparison and sharing it with us.

[@Calciyum88]

That's a really cool experiment! I liked the comparison, helped a lot to understand what's behind the methods. Thank you for this informative video!

[@davespeedee]

4 hours rock hard? o_O

[@peterbrownwastaken]

*giggle*

[@LittleTas12]

@@peterbrownwastaken Contact your doctor if your resin stays hard after only four hours.

[@almagill]

Oh. My!

[@regstarr3430]

Agreed, you are not pulling out the air, you are actually “boiling” the liquid as a result of the low pressure.

[@jadayoung329]

Well you have answered a lot of my questions. Thank you. Great job.

[@Bleucheez42]

I was just looking into both of these. Your video came through in the nick of time. Thank you very much! 👍 👍

[@RamosLuis2550]

the pressure pot is best for resin impregnating wood or other porous materials

[@eurobum2012]

That's not air. That's substances in the resin boiling off.

[@yl7108]

I agree. He is getting rid of some volatile ingradient, which is not good.

[@SilvaDreams]

@@yl7108 Actually it's just speeding up the process of it releasing the volatiles due to the lowered boiling point. The process works perfectly fine but you have to user slow curing resins and you just do short cycles as not to cause it to violently bubble.

[@Doazic]

SilvaDreams If those chemicals weren’t needed in the resin, the manufacturer wouldn’t have added them in. You’re clearly not meant to boil them off.

[@davidgagnon1961]

this answered so many questions I have had about which to get for casting.. I have watched A LOT of videoes and none really explained the purpose of each. Thanks.

[@StormWaltz73]

Great video and very useful information here! Answered the questions I had about pressure vs. vacuum for resin casting perfectly - thank you!

[@davidernesto6258]

First, yes. Harbor freight is good.

[@davidernesto6258]

Literally the view count says one

[@davidernesto6258]

No one cares I know but I was amazingly bemused

[@peterbrownwastaken]

I've got a Harbor Freight benchtop grinder that I've been using for 10 years as my lathe sharpening setup. Love it. I've also bought loads of junk that I've just pitched out. You just never know. This pot is decent for the price and can be quite useful for getting into casting with a pressure pot.

[@davidernesto6258]

@@peterbrownwastaken we largely use harbor freight for workshop consumables. Sand paper, shop towels, vinyl gloves, etc. Not so much for foundational shop tools. I think we have a router and table we got from there as well as some palm sanders some drill bits. If you need a one off tool it's good to check there

[@lluukkee110011]

Awesome video, love when you work with resin. Very cool to watch and learn.

[@bearthompson6506]

Excellent vid! I’ve done some small mold making and casting as a hobby and knew about degassing latex, urethane and silicone, but wondered why people pressurized resin. Now I know . Thanks!

[@SterlingsWoodcrafts]

great video Peter, thanks for sharing that, Awesome info

[@timhalcomb4041]

Thanks for taking the time to share with us

[@DeadlyRounds]

Awesome looking forward to your next vid! Keep making awesome stuff!

[@captainjerk]

SWEET! Both methods got excellent results! With a tweak or two, the time tested traditional vacuum method will be as valid as it ever was. I think both methods have validity and purpose. And now, you have the capability of both! :D Awesome! Thanx Pete!

[@ZacHiggins]

Great video Peter!! Thanks for the shout out and link to my channel, I appreciate it =D I got the same results when I tried it too, foamy mess LOL One cool trick is to use a fast setting resin under vacuum and create a resin sponge looking blank, almost like your resin lava bowls

[@lamador114]

I love your videos!!! My husband showed me your channel and I really love when you do vids with your wife like that thrift store upcycle vid!! Shes so cute!!

[@draygoes]

Thank you for taking the time to explain this to us.

[@CedaxV]

Thanks Peter. You answered a question that I was about to find out on my own.

[@sudhirpatil2870]

Wow! I never thought of using pressure pot- until i saw your video! Thx

[@choke666]

Did definitely answer my question. A MILLION THANKS!!!

[@dudegpo1YT]

This was soo cool Peter.

[@ValTek_Armory]

I love that blue! It's so pretty

[@charlesreicks648]

Nice demo Peter LOL enjoyed it.

[@casgardunrow]

I saw u had a new vid up, I clicked so fast. I love ur videos. Great work.

[@jeffs.6488]

I have found one way to prevent the over abundance of bubbles when vacing resin, it is to mix part A of the resin with the color you want, vac the bubbles out and then mix in part B to the already tinted/colored part A and vac once again. You won't get the bubbling over like you did with the way you did it in the video. This I have learnt from trial and error, casting this way greatly reduces the likelihood of bubbles, however when you pour resin on to or into wood it is better to pressure pot it. Also as a side note, not all resin colorants are alcohol based, these non-alcohol based tints greatly reduce the bubbling over due to boiling off of the alcohol in the alcohol based tints in a vacuum.

[@bigfootandbananaman4746]

I didn't think the pressure pot would work that well. I can't wait for the next video

[@treppas]

You're a Resin hero!

[@bazzarr]

VERY informative and a time saver. Thanks for making this video!

[@lostinseale]

I just found your channel and I must say I have been enjoying it. I see you are going to cost me a lot of money in the future. Keep up the great work.

[@Atlaswolfie]

With the pressure pot, and using the art resin with the baja blue, it'd be really cool to see an aquarium type project! Really awesome stuff! Thanks for sharing!!

[@bradleypackard8828]

I don’t comment often. Have to say my fiancé and I LOVE to watch you and you have a great sense of humor!! I recently started wood turning. I noticed you don’t have any STICKERS for sale on ur website. Have a fantastic day!

[@almostdeadagain]

Hey Peter! Recently heard about making clear wood, sounds right up your alley.

[@RissaNaChelle]

THANK YOU. I have been curious about this for years.

[@drstrangefart]

This was insanely helpful. I was looking at a large vacuum chamber for casting in molds. That's off the table as a casting aid.

[@rikkansi]

Really cool demonstration.

[@AlBarathur]

You can use both, if the resin gives you time, you put on vacuum chamber to take out the worst of it as you manage to have it not to overflow with foam, and then after these minutes of vacuum shock, you put it in the pressure chamber. BTW on the vacuum chamber, you don't need full vacuum, the goal is just to make the small bubbles to grow large enough that the equivalent weight of resin will dislodge them and make them defeat the resin viscosity and float to the top. Great vid, love it.

[@markbeiser]

Use both! After mixing the resin, degas it with the vacuum chamber. It happens fairly quickly, the foaming you were getting after the first minute or so were components of the resin boiling off. Then pour the resin in the mold and put it in the pressure pot. You can also vacuum degas it after pouring the resin in the mold to help get air trapped in the wood out before going to pressure. I do resin casting of miniatures for tabletop war games, so have to get air out of and resin into some intricate fine detailed molds. I have the same HF pressure pot and found that the top for my vacuum chamber also fits on the pressure pot, and seals fine, so I started doing my vacuum degassing and pressure casting in one pot.

[@robinprachar]

Thank you! I wasn't sure which I needed and this cleared it up for me 100%!

[@arta2870]

good info. ended up being messy. I was skeptical about harbor freight pressure tank but now I see it works. thanks. gonna by one