This is Will from BillythebrickCosplay.
I recently teamed up with BestValue Vacs to get my hands on this vacuumchamber.
So in this video I'm going to doa little unboxing as well as set it allup and make a mold for my Voltron coinsthat I was doing some cold castexperimentation during the last video.
As you can see there is the nice big3-gallon aluminum pot/chamber, a glasslid.
The really nice thing about this isthe gauge and everything is all set upready to go soyou don't have to worry about doing any of that.
Allyou have to do is take everything out ofthe box, hook up the hose to one end.
Youhave to remove the little black rubberdeal from the top of the gauge toacclimate it to your specific region, plugit back in, put the filter on the otherend, and the chamber's all ready to go.
Then I broke out the vacuum pump.
The onethat they sent me is a 60mm, 50 micronpump.
The setup on this is really easy too.
You basically just have to fill it withoil.
Make sure you put oil in your vacuumpump and make sure you keep a close eyeon a level of oil in your pump otherwiseyou're gonna burn it out really quicklyso just be careful, and also, you probablywant to use a funnel when you put theoil in otherwise you're going to bigmess like i did so put the cap back onand then wipe all the oil that I spilledeverywhere.
Thankfully i did it on the plastic bag.
Once you've gotten your mess allcleaned up like I did, I went and I'mnot adverse to reading the manual so Iflipped the manual real quick just tomake sure I wasn't going to breakanything or doing anything incorrectly andruin my pump since it's pretty pricey.
Then the only thing else you have to dois plug it in and attach your hose so.
With everything all plugged in and workingthat's why the cameras vibrating alittle bit because the pump does vibratewhatever surface it's on.
Next time Ido anything with it i'm going to have toput the camera on a different servicefrom the pump.
Then you just screw yourhose onto whichever outlet is the rightsize for hose.
The first thing you wantto do when you first turn on the pump ishold down the lid little bit just tomake that seal but then it pretty muchtakes off right away.
And then once itdoes take off you want to run the pumpuntil you get to the right pressure thenclose all your valves and then turn offthe pump.
You don't want to keep the pumprunning the whole time.
There's no need for it and it just burnsthrough your oil and burns your pump up.
So as you can see, I moderate the pressure.
Release there and open it back up and itgoes pretty quickly.
Gets you up topressure really, really fast.
Since thisis a test run i'm not going to go all the way up tofull pressure but once you do hit fullpressure you just close the valve andturn off the pump.
Then you let it sitfor as long as you want to get air out.
And now for the fun part -- making theactual mold.
So for this I am using MoldStar 16 FAST which is probably not themost ideal thing to use if you're goingto use a vacuum chamber just because itcures so quickly.
That's all i had so I poured the twoparts.
Just like most everything, noteverything, but most everything, it's onePart A to B so I poured those out intotwo cups and then threw those in thepot before mixing it.
It will get out mostof the air and then I'll still have to, ofcourse, mix it together post-postvacuuming it which means it will get moreair back into it, but it will get a lotof the air out.
As you can see it goes prettyquickly, and it's kind of cool to watch.
So this is sped up of course, but it'spretty cool watching all the air comeout.
And it's kind of amazing how muchair is actually in there that you don'treally realize.
So with those back out ofthe pressure chamber, I went and got somegloves on, got a bigger mixing cup, andpoured the B.
Make sure scrape to scrape the sidesto get as much of it as I could and thensame thing with the A side with aseparate mixing stick of course.
Pourthat in, scrape the sides, get alleverything out and mix it all up realgood.
Again scraping the sides.
I tried tobe careful stirring to not get a lotmore air introduced back in.
Knowingthat i only had a quick pot life, that'smy wife, and I put the mixed silicone backin the chamber and I timed it so that Iwould have about a minute and a half ofpot life left.
I know I was pushing it butas you can see is still got a ton ofair out after that so I'm patientlywatching the clock tick away, making suremy master and mold box is all ready andrelease the pressure and start pouring.
Even with the air all sucked out i stilldid the high, slow pour technique.
Got itmy stream started and then just wentover each coin a little bit just to tryto make sure I got in all the details.
I probably, if I did this again, I woulddefinitely use a slower curing like MoldStar 15 SLOW so I could get more air outand then I would probably do a brushcoat on the coins just to get all thatdetail.
Make sure I didn't get any air bubbles,but I figured since this was sort of myvacuum chamber test if I had some airbubblesI just do it again.
It's not like it wasa ton of silicone, but that being saidalways scrape the sides because thisstuff isn't cheap and you don't want towaste any that you don't have to.
Soscraped all that out and there is all ofthe silicon poured.
So while the mold was curing I kind ofcleaned up a little bit as you can see.
As I mentioned in my previous video I ama compulsive cleaner, so I like to cleaneverything up as I go as much aspossible.
You can actually see in thebackground there too while I was waitingI was doing some castings of my StarWars Rebel jewelry over there.
So what I'm doing here of course is justcutting the mold box.
I'm trying to just cut away the hot gluewithout messing up the actual foam coreboard.
Foam core board is cheap and yeahI could remake it if I needed to but I wassince I was a little bit worried abouthaving to redo this I wanted to try tosave the pieces so i could remake theexact same mold box if i needed to.
Cutthat away and just loosen up the rubberand peel it off and voila there is thefinished mold.
This is probably the bestmold that I've made thanks to the vacuum chamberand there are the finished coins whichare available in my store.
I hope youenjoyed watching the video you can checkout my shop or my Patreon and all thesupplies I used are listed down below.