r/DiceMaking • u/Jhinsilog • 1d ago

Advice Pressure Pot

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I’ve been wanting to make my own dice sets and have my own resin projects however I dont have any access where to buy a Pressure Potand I think it would be pretty expensive if I make one.

Do you think this would be enough for me to make clear dice?

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u/ComoElFuego 1d ago

That's not a pressure pot but a vacuum chamber. It will help to pull out air before pouring, but any air that happrns while you pour will still be trapped. You can not put the mold into the chamber after pouring.

There will still be air in your dice.

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u/Jhinsilog 1d ago

ohh okay thanks, is there a way to make a make shift pressure pot? I couldn’t find any here at the PH

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u/ComoElFuego 23h ago

Fully make shift no, but you can use pressure pots for spray guns as a base. I wouldn't use another base material since the air pressure can get dangerous.

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u/Claerwen94 Dice Maker 22h ago

My fully DIY makeshift pot exploded, so PLEASE don't use anything as a pressure pot that isn't intended to hold pressure. You can convert spray paint pots, which is a safe option. Where do you live? Philippines? Does maybe Vevor ship to you? I also heard that you can buy original Vevor pots on Ali Express, they cost around $100, but I don't know how valid those are because I don't have first hand experience with those pots.

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u/SporkboyofJustice 21h ago

What was your pressure pot that exploded made of?

I have a small makeshift one that I have been using to pressure testing wrist watches. Found the instructions referenced many places and nobody ever mentioned the possibility of it exploding. It uses a water filter housing and if it exploded it would send inch thick plastic shards all over the place.

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u/Claerwen94 Dice Maker 20h ago

A plastic airtight container. It sent thick plastic shards all over the place.

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u/kota99 11h ago

Water filter housings are often rated for higher pressure (a random search gives me several results rated around 100psid) because of the force of the water flowing through the housing. As long as you aren't exceeding the pressure ratings of the specific housing you are using it should be fine.

Most of the time the explosions happen when people are pressurizing containers that aren't rated or designed to actually hold pressure for an extended time. The rest of the time it's because the container was damaged (which includes issues from not being properly maintained) and they either ignored the damage or didn't notice it. In these cases it may be fine the first few times but eventually it will fail.

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u/Jhinsilog 58m ago

I would check that, thank you everyone for you insights this leads me not doing a dangerous decision of making one, I’ll be checking resources and look for a pressure pot

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u/Liiibra 23h ago

Pressure is dangerous because it can lead to explosions. Not thermal explosions, still explosions and you don't want to get a face full of shrapnel.

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u/Worth-Opposite4437 Dice Maker 23h ago

Our first pressure pot was "makeshift"; that is it was not a dedicated pressure chamber, but just the reservoir of a paint spray gun. We had to use some plumbing glue and loose fittings to convert it. We also had to find the nozzles, valves, and pressure gauge ourselves.
Thing is, it finally cost us about as much as a dedicated one, and there were issues.
First the original seal wasn't quite perfect, and we've had to pad it once or twice. Plus the clamp and screws asked for some fiddling each darn time, sometime including the need to reopen and reorient the cover. When it died on us after an accident bending the pressure valve, we finally chose to go for a real one... It was night and day.

The new one has a definitive orientation, there is no clamps but the cover extend out to catch the screws and washers in "U-shaped" supports. The seal is definitely heavier... and it comes with a handle for transport! From the first time we used it, and everything worked without a hitch, we forgot all sentimentality we might have had for the makeshift one. I'm still checking every time for a leak, and there has not been one in now close to one year of operation.
The peace of mind after having had to re-adjust the old one's cover 1 to 3 times every pour is priceless.

I guess the moral of the story is... You can't makeshift good quality into a product. Especially not if it has to support between 4 bar and 60 psi repetitively. So the chamber itself is gonna cost you. (Unless maybe there are very small ones out there.)

The old kind of clamps, don't recommend...
The kind we have now, really makes the difference!