Q&A: Do i really need a pressure pot for casting worthless wood w/7 minute Alumilite

[@johndaugherty2287]

If the wood was completely dry so to avoid the reaction with water, how do you think the pressure would compare with the open air piece? Watching the video a couple of times it looks fairly clear. When I was into casting I would always bake my wood at 170 degrees for around an hour to drive off as much moisture as possible.

[@JohnBare747]

Thanks Dema having proved your point through scientific experimentation it leaves little to question, demonstrated proof is the best proof. Now all I have to do is get off the pot and get a POT.

[@DemasShopforEverything]

Haha, send me the pot ;)

[@KSFWG]

***** Hope he wasn't talking about a chamber pot... lol ;)

[@madmodders]

Did you leave the cup under vacuum the whole time until the resin set? Didn't quite get if you did that or not. You're supposed to quickly vacuum out the air and then let the resin set at normal atmospheric pressure. This works very well for slow set resins. Perhaps Alumilite sets too quick for the foam to settle down before getting too hard. I don't know. There's a lot of air in the wood, so I think one must pump that out first, then somehow add the resin still under full vacuum, and then suck the bubbles in the resin out, then take the casting out and let it set, open on the bench. I guess not worth the hassle. :p [edit] Never mind. I found this that pretty much answers what I was thinking. Alumilite sets too quick, and with a pressure pot you don't remove the bubbles, you just compress them down to a size you can't see. :) kzbin.info/www/bejne/r4bIo3WNn7KUoKc

[@DemasShopforEverything]

Lol glad you were able to find the answer to your question

[@tek4]

The open air and pressure pot I figured out would end like that The thing about vacuum casting, if you Degassed parts a and b first, then mixed, and right in to the vac, it may of ended differently, however 7 min set time is Too fast as you said for the vac operation. I get great results with vacuum casting and using the clear amazing casting resin with 45 min pot life

[@rob1bm]

Sorry man but the demo is not well done, you should never vacuum a 7 min resin, it cures too fast!. Secondly, you are supposed to vacuum the resin then pour it into the mold. Wood has naturally a lot of air you won't get too much foam if you vacuum glass for example.

[@MrDirtysteve75]

The whole point was to show that 7 min resin has too short of cure time to vacuum. You just backed up his point with your comment.

[@rodrigopadillamanzano1434]

i want to buy a pressure pot, do u have some links?

[@RB-ck3xr]

What a load of bs. You made so many cherry boy mistakes. First bake the wood at 120 C to ensure it is bone dry. Fix the wood into the mould. Now measure out your resin and hardener in seperate containers and vacuum degas both. This will remove any absorbed and any entrained air. Mix the resin and hardener, pour into mould, give the mould and contents a quick vacuum to remove any air intrained during mixing. Release the vacuum and apply 60 to 75 psi air pressure. This should all be achieved within 3 minutes of mixing. The result is a clear, bubble free cast

[@mcremona]

Great demo, Dema! It's good to see what happens with each one.

[@DemasShopforEverything]

Thanks Matt :)

[@AndrewKleinWW]

So much foam with the vacuum!

[@mcremona]

Andrew Klein Vacuum chamber foam drawers! The easiest drawers you will ever make!

[@zutterlove]

Matthew Cremona b

[@johndavis8924]

This is misleading. While the results with a pressure pot and the particular alumilite you are using are clearly demonstrated, you are not actually answering the question whether a vacuum chamber can be used with success when casting epoxy. It is true that the product you are using has too short a pot time for vacuum. However, alumilite makes clear resin products with much longer pot times. It also appears that you allowed the resin in the vacuum to set while under vacuum which is a big mistake. I use alumilite amazing clear cast in a vacuum with satisfying results. It has a pot time of 40 minutes or more depending on the temperature of my shop. I time the de-gas process and just before my pot time ends I slowly release the vacuum and the resin is sucked into and around my piece and allowed to cure at normal pressure. I have gotten castings with no visible bubbles using this process. Having said all of that, I do plan to add a pressure pot to my shop soon.

[@MrDirtysteve75]

It is not misleading because the title specifically says 7 min alumalite. He always has people asking about using vacuum with this particular product so he is answering that very question by means of demonatration.

[@Beachnative42]

After working for 35 years with all types of resin in a myriad of ways , using a pressure pot is not the answer due to foaming at the beginning of the process. Also foaming is not caused by the releasing CO2, well not all of it. The majority is because of displacing air in the wood while under a vacuum and not having enough time to displace it. The pot life is waaaay too short. There are ways around it but there is a cost, time and materials. Actually you could add denatured alcohol, put it under a vacuum in a sandwich bag shaped close to the size of the part to use less material. Grind off back to the wood then do it again till all of the air is displaced and foaming is minimized. Once the air has been displaced you will have a uniform density in a matrix of wood and resin. This solves more complex issues when dealing with temperature changes such as going from 30F to 120F. After you have built a stable substrate then you customize it, then use the pressure pot to minimize bubbles from mixing.

[@DemasShopforEverything]

thank you for the info :)

[@MrBarrynicholas]

Maybe try again with dry wood?

[@topfuel29channel]

Take your piece of wood, and put it in your vacuum chamber. This will remove any moisture in your wood. Then put your wood, and resin in your pressure chamber.

[@MatthieuLibeert]

Hi Dema, great video! one question, how would you solve the problem with moist in the wood? put it for some time in the oven to "dry" it?!

[@DemasShopforEverything]

Thank you, and yes, 12 hours in over at 120 degrees

[@MatthieuLibeert]

Great, thank you :) btw there might be a trick to solve the problem with the vacuum ;) just "laquer" the piece of wood with epoxy, let it cure and then try the process again with the vacuum...might not work with the resin system you are using due to the limited amount of potlife time but should work with a longer potlife time epoxy resin ;) or degass the resin only then pour it in the cup with the wood

[@mickeyromeo]

you don't have to use a pressure pot.

[@CoryTichenor]

I'm not trying to be a jerk or say the pressure pot isn't the way to go but you did the vacuum wrong. You needed to vacuum the resin without the wood then slowly pour it over the wood. The reason the vac didn't work and you continued to get the air bubbles (not foam) was because the vac was trying to suck the air out of the wood. If you have stabilized wood you know it take a while to get the air out and then the resin gets sucked into the wood. Which is also why to cure that resin you have to bake it, to allow enough time for you to get all the air out. But it only should take less than a minute or two to remove the air from that much Alumilite resin. Try it again without the wood in the vac and you will be surprised how well it works.

[@DemasShopforEverything]

Cory, your not being a jerk at all , this a perfectly good observation. But I have discussed this with Alumilite company and they actually say that using vacuum with Alumilite vaporizes some of the engrediants, but it seems people keep thinking that's it's possible, so I just may try it again some day. Thank you :)

[@CoryTichenor]

I would just stick with the pressure pot. But if someone has a vac and only plans to do it a couple times and don't want to buy a pot then you can make the vac work. Degassing with a vac is really only meant for silicon or stabilizing type resins (cactus juice) anyways.

[@DemasShopforEverything]

Yup I totally agree :)

[@GuysShop]

Thanks for showing these examples Dema. You kinda look like a mad scientist doing it!

[@DemasShopforEverything]

GuysWoodshop haha thanks Guy

[@PHIL_S]

Dema - perfect explanation and demo - thanks for taking the time - you answered my questions

[@Patricksworkshop]

Great test Dema. I was surprised to see the vacuum make all that foam. Thanks for the vid my friend

[@dmitri5318]

Dear Dmitry (I'm from Russia and I ask forgiveness for my English) ... Please tell me: what is necessary power of the vacuum pump? I plan to make the plastic for the handles of the knives of the polyester resin and acrylic resin and stabilize the wood, in particular polyester (for sale). If you can, please provide the necessary engine harrakteristiki

[@xavierdesaegher7353]

Hello I am French and understand a little English, but not enough to follow conversations. also, not having the translation of your videos, it is difficult for me sometimes, so I have questions that I could then translate using an application. I would like to congratulate you for your achievements on your channel that I have just discovered. also, I am interested in creating stabilized wood blocks. From what I understand, you prefer the pressure method, instead of depression (stabilization), because it is more efficient and faster? stabilization in the resin first requires removal by suction, then putting the block of wood in the resin and waiting?, while the pressure technique seems shorter because the block is directly placed in the epoxy mixture and hardener, and put under pressure for some time (I don't know the duration, and if you can tell me?)? in fact, the second method is all in one, so the first is first a stabilization in resin and then use this block of wood to put it in epoxy, and let it dry? thank you for your answers and continue, it's great. cordially Xavier

[@daletprescott3458]

Thanks for the video, I'm just starting casting, it helped

[@drew.silverotter]

Dear Dema, as much as watch videos like this the more I get frustrated. Most woodturners or artist can't afford pressure pots, let alone resin. I have stopped watching channels that use resin and pressure pots. It's not feasible or within my budget. Now I'm not saying the pieces are not amazing but it would be good if channels do woodburning without resin.

[@BrianMcCauleyDesign]

Nice demonstration. I've never done any casting but it looks like fun.

[@robertcrittenden497]

Vacuum pot is not for casting. V. P. Is for vacuuming before resin and mold sets up. The pressure pot is for resin during it's cure finish. There's a technique must follow

[@michelfernando5745]

HI AM FROM BRAZIL Would you like to know which resin you use?

[@fred_derf]

Using a vacuum chamber will pull air out of the wood (causing bubbles), pull moisture out of the wood (reacting with and spoiling the resin) and if you get the pressure low enough cause the resin to boil.

[@michaelgrace7778]

Yes, he should have put the wood under vacuum first to boil off all the moisture.

[@ralphhross]

Great video, well done and very useful information. Thanks. I see some folks saying you don't need pressure pot for Liquid Diamond, any advice on that would be appreciated. Thanks again.

[@jilliannitz1884]

Next question, what if you are not using alumalite? Alumalite cures super fast so I wonder if thats the issue.

[@tommurphy1153]

Dema, great experiement and I love it! I do a lot of this sort of thing and have experimented a lot with it too, let me tell you what I have found! Pressure pot is definitely the best route but a lot of people are scared of them (pressure is safe if you follow the instructions and deadly if you mess with it!). Sometimes you cant use pressure too (if the piece is very large etc). I have some solutions for casting without pressure pots and I do this successfully myself. Solution 1. Use a longer pot time resin. I use Gedeo Crystal Clear and its got a 4 hour pot time and takes 30 hours to set up. This is waaay longer than Alumilite but it gives all those bubbles a lot of time to surface and it really does help. Its much more watery too so the bubbles have less problem surfacing which brings me to... Solution 2. Warm your alumilite in a basin of hot water. Warm alumilite will flow a lot better and consequently will get the bubbles out easier because its more watery... Solution 3. 1. Vacuum in cactus juice (methlacrylate resin) into the piece to start. This avoids having air come out of the wood and seals it up nicely. Also looks great if you use a dye with it. Make sure to bake the wood to dry it before you do this (or any solution) as resin does not like water. Solution 4. Give you alumilite a helping hand by vaccuming it briefly immediately after stirring. So I mix it up, nice and warm, stick it in the vacuum for maybe a minute possibly 90 seconds and open and close the valve to stop it madly foaming. This helps evacuate the bubbles from the alumilite but you need to be fast, dont do this 5 minutes after mixing!! Also dont do this with the wood in it or you will draw air out of the wood into the resin, defeating the purpose! Its just for quickly helping those bubbles get out of the resin. In all, a pressure pot is still the best way to go but these tricks can also help even WITH a pot ... I'd love to see you redo the experiment with dry wood and some of these too!

[@andrewoldham4462]

Please forgive my possible ignorance but would you get the exact same result if a different make or type of resin was used

[@dukeofearl6256]

No, you do not have to use a pressure pot. Do I have to use a pressure pot if I want products to look professional? Yes.

[@ZacHiggins]

Awesome test Dema! I've been meaning to try vacuum with resins for a while. I'm still curious how PR or epoxy will work under vacuum, but it obviously doesn't work with Alumilite! Do you usually bake dry your wood before casting and stabilizing?

[@DemasShopforEverything]

Zac Higgins thanks Zac, maybe youcan do the video on PR and epoxy :). this time of the year its pretty humid in my shop and i do normally bake them over night before casting.

[@lindseysturkie2205]

Wonder how a vacuum molded piece in clear then placed in a pressure pot of colored resin would turn out???

[@nikenike2530]

Ciao ho visto il tuo video e mi sono iscritto purtroppo non conosco L inglese,vorrei sapere se stai dicendo nel video che è meglio la pentola del vuoto o la pentola sotto pressione grazie NJK

[@ugh3012]

This test or demo was tainted and not controlled because the wood was not dried properly.

[@dnavanlife5846]

Might be a stupid question but can you use a bicycle pump to pressuriz the pot ?

[@AlumiliteCorporation]

Thanks for using our product. :)

[@tooljunkie555]

To fet rid of the bubbles in the 2nd one couldnt u have used a heat gun? Or is that a differe t type of resin? Thanks for the demo probably saved some people some money and a head ache..

[@DemasShopforEverything]

Joe basementwoodworking i have never tried a heat gun, bt it seems a few people think that will work. maybe a follow up experiment. I know heat works well with Polyester resin, not sure about alumilite, i think the heat will just speed up the curing process.

[@котятамилашки-в7щ]

Дим я так понял что сначала стабилизация дерева в вакууме а потом заливаем смолой и выдерживаем под давлением?

[@MakeCrazydays]

Fantastic information, I'll make sure to pass this along to my wife. She is interesting in getting into casting.

[@PreschoolPlay]

what type of pressure pot is it? and what kind of vacuum chamber?

[@DirkMitchell]

Thanks for the comparison that is very good info. I have seen other guys degas the A and B parts separately and then mix slowly, cast and then pressurize it. The stuff you are doing comes out really clear and with no bubbles so that looks like a wasted step.

[@samstage44]

Is "worthless" wood actually a type of wood? That may seem like a stupid question but he just keeps repeating that exact word.. Like he doesn't even say: scrap, useless, purposeless .. I googled it and nothing came up so maybe he just means meaningless wood

[@DemasShopforEverything]

+Sam Stage lol worthless wood is a term used by people that make these blanks, scrap, useless, cut offs etc is all the same thing

[@JeremyMcMahan]

Great test Dema. I wonder if a centrifuge would work to remove bubbles if you could leave the piece spinning until it set up... Hmmmm. Anybody out there have a centrifuge and some Alumalite?

[@DemasShopforEverything]

That's a whole other expens lol.

[@SansP3ur]

Thanks for the experiment but what's the rating of the vacuum compressor? It looks and sounds awfully small.

[@alexpettigrew8971]

CO2 formation is caused by water in the wood reacting with the prepolymer (part B). With this type of resin system applying pressure surpasses the formation of CO2 and hence the bubbles. Applying vacuum will merely remove the dissolved air. Drying the wood and applying pressure both should lead to better quality castings.

[@nikenike2530]

Ciao se mi rispondi sarei molto contento grazie NJK

[@susanvasquez3625]

While I've not done it since I don't turn, wouldn't it work to seal (paint) the wood with a thin coat (or 2) of resin, allowing them to dry and making sure there was complete coverage, THEN casting the resin and letting it dry in the open? As long as you mix carefully and avoid creating bubbles in the resin, you would not get any bubbles from the wood. Warming the resin slightly would help with bubbles as well.

[@albertoresparza557]

When you plug the air for the pressure pot, the compressor was turned off...you just fill the pressure pot with the appropriated pressure (40psi) and when reach the number just unplugged it?

[@DemasShopforEverything]

Once you reach the pressure, u have a ball valve that closes the pressure pot off, so when I unplug it, the pressure stays in the pot,

[@stevecollins9450]

Wouldn't you know it..."do nothing" does nothing again! :>)

[@1982900F]

So is it fair to say that vacuum chamber then is really only good for stabalizing wood with non-time based epoxies like cactus juice?

[@DemasShopforEverything]

Yes that's right :)

[@BlackCat_2]

Do you need to babysit a pressure pot like you do a vacuum so it won't overflow? - Heidi

[@pettigrewwoodworks]

The moisture in the wood is probably reacting with one of the Alumilite components and releasing CO2. As you have learned from experience the wood should be as dry as possible. Even in the absence of moisture the bubbles you see without applying pressure are probably due to an Alumilite side reaction that again releases CO2. I don't know if applying pressure suppresses that reaction or whether the pressure just keeps the CO2 from forming bubbles. When you applied vacuum you were probably getting combination of normal degassing and pulling out the CO2 as it forms. All in all and interesting experiment. Thanks for sharing.

[@allensupcycle1958]

So what temp in a toaster oven? I bought a toster ovenbto dry wood and then to cure after pump/cactus juice... what temp to dry surface moisture or whatever moisture from wood. I'm a newbie. I plan to weigh, cook and weigh again until it stays one weight showing it has been dryed.

[@Farroutman1]

Thank you much! Subscribed for sure. I’m looking to get into casting for small items for turning and other artisan projects. Would you say it is worth using a pressure pot for any resin casting?

[@ruthboria3635]

Hi I learn a lot from your KZbin channel love wood and Mother Nature , anyway my question is can I put my casting piece twice in the pressure pot . I have so many ideas 💡 😁 I want to put a small item in the middle of the resin but I'm scare , I wish I can sent you a picture of what I'm taking about 😟

[@ReplicantLSD]

This applies if you mix your resin&hardner really fast. If you pace yourself and mix slowly you will have no bubbles. But this can be applied if you have one small casting.

[@mmwoodstudio]

You've got a whole new product you can sell now! Dema's Art. Do that with some cool colors. Head over to NYC and they will eat that up!

[@DemasShopforEverything]

MM Wood Studio lol im an artist now

[@mmwoodstudio]

***** seriously! that vacuum one in the cup... that could be a vase for a center piece on a table. Put some water in it and some flowers with a cool colored Dema's Art vase... think about it!

[@JimCoogan_CoogansWorkshop]

Excellent demo. I think that will answer a lot of peoples questions. Thanks.

[@DemasShopforEverything]

It will for sure, I get this question asked atleast a couple times a day

[@marcovelez942]

What brand of pressure cooker do you use? I've done some Google searches and can't seem to find the one you have. Any direccion would be appreciated, even if it's not the exact one you have. Thank You

[@scott0071000]

Hi I like your video as I am new to pen making can you please explain how the pressure pot works, like how it works and how much you can put in the pot. Graham in England

[@DemasShopforEverything]

+scottfree well a pressure pot does exactly what it sounds like, it put your blanks under pressure. pressure compresses the air bubbles in the resin making in nice and invisible. and you can fit as much as the pressure pot will fit, there are different sizes.

[@JimE6243]

Dema, thanks for the visual info. What brand vacuum chamber is that and your opinion please. JimE

[@DemasShopforEverything]

Jim E Thanks Jim, i dont know the brand of this one, i borrowed it, but it looks like the ones i built for myself last year.. kzbin.info/www/bejne/naWpknd6hdp7fKc

[@josephstaup8868]

What if your using the Alumilite White? Since that doesn't require either the pressure pot or vacuum pump, is any problems involved with it?

[@GoingtoHecq]

I like the video. For alumilite, you are probably right. Do you think you would have better results with an epoxy or other material that has a longer working time?

[@DemasShopforEverything]

I use Alumilite because it doesn't shrink and sticks to wood like white on rice. But yes I think it may work better with other resins and epoxy

[@erickl2635]

will stabilizing the wood eliminate the air bubbles around the wood on the pressure cast?

[@DemasShopforEverything]

Not really, there will still be air

[@p.dykmans9846]

When you lower the pressure you also lower the boiling point of a fluid. So, my guess is that your vacuum experiment is simply making your resin boil. If that's the case then you are introducing even more gas than the amount of air that was present before. Because now also your resin is turning to gas.

[@gailrogers3012]

Dema, could you pour layers of the alumilite and torch it each time, would that work to remove all of the air bubbles? And would you need to sand between?

[@howardjohannssen4607]

Great video, you answered my thoughts about what you did. Using caucus juice to treat my dried up wood.

[@ronaldomazzini3280]

Hello, my name is Ronaldo, and I live in Brazil, I would like to know if you sell the colored rezina tablets that you make, thank you for your attention.

[@jenniferhalliwell416]

How can someone get into this? I am guessing you'd have to be a carpenter? Or have a workshop?

[@DemasShopforEverything]

+Jennifer Halliwell probably need some type of space with an air compressor

[@hopkinstreeexperts759]

where can I purchase blanks? I'm look for ones that are about 12-14 inches.

[@DemasShopforEverything]

+3lusive Check out "resin casting: group on facebook, im sure you will find someone there :)

[@unfreundlich7168]

a vacuum is only needed if you want to color stabalize wood. for casting a pressure pot or simpler just a plain simple heatgun! yes a heatgun gets rid of all the bubbles

[@starbabar1005]

Raffir is a variety of resin processed materials suited for use in accessories, jewellery, fine handles .....

[@yanin68]

?

[@kimambrose1018]

Thank you for showing the difference. I have been looking for a good explanation. Your examples explained it well and visually. I now understand. Thank you

[@ivan.pershin.83]

Демас, можно твою электронную почту, хотел проконсультироваться (you mail?)

[@TA-op3vn]

Dima, try the same 3 options, but use cactus juice to stabilize the wood.

[@OmarKhaled-tm7hs]

Can I use guoache color ?

[@ricstarred7993]

Great stuff--thanks

[@ТПККарнавал]

Спасибо за видео! Скажи, пожалуйста, какое давление в камере избыточного давления. Спасибо.

[@donaldbayes6235]

can you put brass shavings in the mix to make it look like goldfish floating in the mix is that something that can happen

[@danielvrana9444]

I have a question here? Can you use stabilized wood then put it into the mold and pressure pot the mold?

[@DemasShopforEverything]

Yes

[@ruthles1246]

I just saw your video on making a duck call out of the resin and wood, do you or would you sell the blanks?

[@WildStyleWorks]

he nice video but u did something wrong with the vaccuum. the secret is to put the wood it self into the vaccuum(without resin) and start build it up, to get all the air out of the wood. then you gonna add the resin into the vacuum and instantly release the vaccuum. now the vaccuum inside the wood can suck up the resin. to help the resin u can put it in the pressure pot. i do it my self and its called stabilizing. the other thing is, i take a very liquid resin. its just like water or even thinner. i will put a video on u tube how i do it. best regards pii

[@DemasShopforEverything]

Stabilizing and casting are separate procedures, this video shows you can't cast with vacuum. Thanks for the input :)

[@DemasShopforEverything]

How does one add resin while the chamber is under vacuum??

[@WildStyleWorks]

ok sorry, my mistake,casting is no good idea in a vaccuum chamber,.....thats my secret valve i developed for my chamber,... its very easy and i will show it to you in my video.

[@mikewright9163]

Best explanation and demonstration comparing different processes I have seen👍👏👌. Thanks a million

[@Unorthatrox]

You didn't use the vacuum right. you just pull the bubbles out then release. You foamed it and ruined it. Best result would probably be to vacuum then pressure pot.

[@dukethomas95]

I have to agree with you Unorthatrox. I've always left the valve closed and I just make sure I have room for expansion. My vac chamber is not as tall and narrow so all I do is put a used aluminum pie tin under the container so if it does bubble over its on to a piece I'm just going to toss anyway and the chamber stays neat. Demas' way of doing it just worked it into a froth but if he had let it expand and not interrupt it, all of the air would have been sucked out and he would have pretty much had crystal clear results.

[@yazhyk]

Doesn't matter how you use the vacuum chamber... it won't give you good results

[@Unorthatrox]

I've seen this method used very successfully plenty of times. there are factors to consider like a longer set time due to the time it takes to pull the air. You can't ignore the truth that air is in the mix and compressing it does not remove it. vacuum may be slower and more work intensive but it does work

[@yazhyk]

Key words "set time". You cannot use a vacuum with the resin Dema is using... period. You will end up with a worthless piece of foam resin. You would be able to use a vacuum if you were using something with a much longer set time, as in hours, which doesn't apply to this video.

[@winpat911]

maybe stabilize with cactus juice in vac first then pressure with resin...yes..no..

[@craigpereira6381]

That's a cool experiment. Nicely done.

[@SergeyPhila]

Норм тест. А почему на английском ?

[@NicholasGomez]

Awesome Demo ***** !! Thanks for sharing and clearing up some of my questions on these.

[@ivan.pershin.83]

resin hardens inside the timber after sawing from the pores of the resin follows

[@gd7681]

Would be nice to see a comparison with a vibrating table too.

[@Ronaldg333]

Thank you.

[@hudsonmaia4079]

Good afternoon, I work with arts and crafts in Brazil, what kind of resin do you use in this project?

[@VSVRed1Link]

hmm i learned an ultrasonic bath should be perfekt to get bubbles out of liquids. Maybe this works for casting with worthless wood too.

[@kickpublishing]

After extensive testing with all types of resins, if your workpieces are small then no you do not need a pressure or vacuum pot providing you can apply heat using a heat gun to release the bubbles. However, if you intend to turn the pieces at high speed on a lathe - especially if they are larger than a pen blank, then for safety you need a pressure pot to ensure it bubble free and stop the piece exploding on the lathe (it happens when the gouges catch a large bubble)

[@Daniel-wn4yj]

Hi...sorry for my english. I am interested in what you say. I am new in this and I want to see what do I have to buy. I want to make pen...so..I can eliminate the bubbles just using a heat gun? Thanks

[@tiavor]

how about using a stabilizer resin before the normal resin?

[@CMRWoodworks]

Nice demonstration. Good to know.

[@alsmith1025]

Awesome.

[@terrykidd4417]

Thank's. I woundered why some used a pressure pot. Thank you so much.

[@iNezerroth]

What is the smallest compressor for pressure casting I can use?

[@haristonhivilov9629]

Hi,what time you need to keep the workpiece in vacuum,