Pressure pot

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Laurenr

Laurenr

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Joined
Mar 16, 2010
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302
Location
Spokane Valley, Washington
OK, I put together a pressure pot, but am having a difficulty. When the pressure got up around 40 psi. the liquid boiled over and made a mess. Then the acetone started eating at the teflon tape I used to seal the gauge and the schrader valve.

Any ideas? Maybe too much acetone in the mix?
 
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What are you using acetone for.

Now if you got a H.F. pot I found (and I got 3 now) the seal around the lid needs to be seated. They all leaked I had to put about 50 lbs in till they seated kind of like seating a tire. they leaked like crazy till I hit about 50 lbs then it went POP and it sealed and never leaked again. The newer pots are better with the welded fittings less to leak. I don't know why liquid would boil with pressure with vacuum yes.

Maybe when you pressurized your tank your fitting that goes into the tank goes straight in and it blew your liquid all over the place. You need to put a "T" inside the tank so when you blow air in it doesn't blow the resin resin or liquid all over the place.

What are you doing I don't understand the acetone.

Oh maybe your using acetone to thin resin don't see the necessity there. Also when you release the air bleed it off slowly if you just blast it out any air that is on or in a liquid will make a huge mess as the air expands.

Take a large air bubble at the bottom of a container of liquid. Pressurize it at 40 or more I got to 60. Now that bubble is tiny too the point you can't see it but it is still there. Now if the liquid has not set and you release the air all at once it will blow out all the liquid in the container as it returns to it's original size.

Need more info to figure what is going on.
 
I REALLY don't understand you guys!

Are your LIVES worth LESS than $200? For about $300 you can buy an alumilite pot (less than $200-shipped) or Binks pot from the respective manufacturer, designed for this SPECIFIC USE, already fabricated, warranted and pressure tested. By the time you buy that Harbor Freight piece of Chinese CRAP and modify it to meet your needs you have spent almost $100.

WHEN you blow it up and END YOUR LIFE, not only are your survivors sad....they have no recourse, because you modified the product! The CHEAPEST life insurance I have found for a 55 year old man is about $1,000 per year for $250,000 coverage.

Seems to me that you guys don't need modification instructions (by the way, good lawyers have won BIG law suits against those giving instructions that results in fatalities), you need a MATH lesson...... If you sell 400 cast blanks per year(7.69 blanks per week), the additional $200 can be recouped in less than a year by raising the price of the individual blanks by 50 cents each.

I'll stay as far away from this as I did giving instruction on how to remove live primers from brass casings ----- the end result is likely the same.

Respectfully submitted from THE PROUD RIDER OF THE SHORT BUS!
 
MesquiteMan said:
You now what, my HF pressure pot did the same thing except my results were a little different and I was at 80+ psi:biggrin:

(for those who may be new, my HF pot blew up and sent the lid flying 20' away!)
Click to expand...

Just to be clear- you put how much pressure, over the safety limit, in that pot for how many cycles before it blew on you??? And where was that safety relief valve? And you made some alterations to the lid lock up? Just for the confused, concerned, new people... :wink:
 
A while back I bought some acetone "stabilized" Redwood burl knife scales. I don't know if a pressure pot was used but the acetone was only on the surface. The wood was worthless and snapped in half with about 2 lbs of pressure.

Acetone seems like a dangerous way to stabilize wood. Maybe people use it because it cheap. I think there are better, safer choices out there that will do a much better job.
 
Andy,

Yes, you can buy an Alumilite pot that is already set up but just to be clear, their pots are also made in China and are very similar to the HF pots. Might even be the same pot.

I now use 2 Binks pots that are ASME certified at 80#. The difference in quality is night and day.
 
MesquiteMan said:
Andy,

Yes, you can buy an Alumilite pot that is already set up but just to be clear, their pots are also made in China and are very similar to the HF pots. Might even be the same pot.

I now use 2 Binks pots that are ASME certified at 80#. The difference in quality is night and day.
Click to expand...

Maybe mine was a binks? It was made in the USA. I don't really remember where it came from (I now only do PR and have no need for pressure) I think it was ASME? certified at 80 lbs. And as usual, especially when it comes to casting, you are right! The difference in quality IS day and night.

I certainly do NOT believe in overspending on tools, but in the case of the Binks vs the HF PAINT pot, it is a 'no-brainer". I don't intend to trust my life to a Harbor Freight product, EVER! It would be hard for someone else to support my wife's lifestyle:)

With that, I'll climb down from the safety soap box.
 
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I concur on the Alumilite Pot. I've seen one and it looks exactly like the HF pot and actually no, it is not already completely set up. You have to assemble it when it arrives. The only difference I think between the Alumilite pot and the HF pot is that you don't have to deal with the feed tube and maybe they toss in the extra couple little parts that the HF pot does not include, like a diverter and a ball valve, but even then I'm not so sure. They have their personal pots set for 50 lbs only. They do not ever use more than 50 lbs when testing the product, so they never try to maximize their pot. I have nothing ever but great things to say about Alumilite...awesome company,but their pot is way over priced, and I would not rate it any better than the HF pot. If you can afford a Binks, do that, and if not, don't get anything less than a CA Technologies pot.
 
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