I know already spoken of but for an update........where in Australia today can you buy a pressure pot???
plus 2 more questions!
What's a decent one?
Why do they need to be adapted for casting, can't you just close off the not needed outlets?
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I know already spoken of but for an update........where in Australia today can you buy a pressure pot???
plus 2 more questions!
What's a decent one?
Why do they need to be adapted for casting, can't you just close off the not needed outlets?
When people say they adapt a tank for casting they are pretty much doing what you say in removing the pickup tube, cap off unused fittings and fit a few valves to help control things.
The Supercheap Auto tanks are often recommended and they seem to come on special now and again for about half price or less. I don't think there is much difference between the different brands so it's just a matter of keeping an eye out for one in the price range you are looking at.
Do you mean as in degassing bulk epoxy resin?
I was looking at this setup, but couldn't find anyone who had ever tried one: -
https://www.ebay.com.au/itm/5-Gallon...UAAOSw46hbDLOk
Seems to have everything ready to go, including pump?
Μy mum used to cook with one of those, hmmmm :D
https://www.starkstores.gr/image/cac...-3-800x800.jpg
That's a vacuum chamber which I guess is really the opposite of a pressure pot. Anyone used one of these for resin casting?Quote:
Originally Posted by Mr Brush
You would use a vacuum chamber for removing bubbles in the resin before mixing or casting and for stabilizing wood. A pressure pot is to compress the resin to prevent dissolved bubbles from forming after you cast and the resin sets. Just like divers getting the bends. A pressure cooker can be used for vacuum but it should not be used for a pressure pot because they are made for about 10 psi or a little more when use for cooking. Using one for casting and it will let go with the 40 psi often used. That kind of compressed air being suddenly released will blow to the windows in the shop and possibly kill you if you are near it when it blows up.
Pete
Most pressure pots are made from paint spray pressure pots. The various types then relate to the quality of those pots. Most beginners use those available from SuperCheap Auto, but they are a thin metal type and only good for ~40psi, so considered the lower end of the spectrum. Good pots are usually welded steel and can be used up to a working pressure pf ~80psi or higher. You can buy them brand new but it is better to go secondhand from Ebay or Facebook Market Place etc. you can also get proper engineered pressure pots made to suit, but be prepared to open that wallet wide.
Mine were from old paint pots where the mixing mechanism was stuffed so going cheap. You do have to remove all the old paint uptake rods, any air mixing devices etc, then adapt new plugs and/or pipes to suit a pressure control valve and water trap, plus safety valve to suit the maximum working pressure (NOT the maximum pressure).
DO NOT use cooking pressure pots for reasons as explained above, they go BANG!
Also do not use old cast aluminium pots, although I have one still, as they apparently fail in fatigue.
Are you refering to paint pressure pots?Just wondering as I have an Arnold Deviblis one, that I want to get rid of?Quote:
Also do not use old cast aluminium pots, although I have one still, as they apparently fail in fatigue.
Kryn
Yes. The old aluminium spray paint pressure pots were discontinued apparently due to fatigue failures. I have one that is well over 50 years old and still going strong at 60psi, but I turn on the air and get out of the workshop before it is pressurised, closing the roller door behind me just in case :roll:Quote:
Originally Posted by KBs PensNmore
Thanks Neil, I'll melt it down for something else then. Don't want to sell it and have some widow sue me over it.
Kryn
Got me one on sale! I've converted it but yet to try it out.Quote:
Originally Posted by Treecycle
Hi brainstrust, could you give an idea of parts required and modifications required please?Quote:
Originally Posted by brainstrust
thanks
Gary
This thread might answer your questions.