Pressure cooker

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Last Post 01 May 2023
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delmarskid posted this 30 April 2023

I found a coat of flash rust on my Lyman 452460 4-cavity mould. I steel wooled the loose stuff off and put it on a rack in the pressure cooker with half an inch of water on the bottom. The mould was not contacting the water. I like this rig pressure cook slowly for about a half hour. The rust that I could not reach has turned to a rust blue. Pretty slick.

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Fitzpatrick posted this 01 May 2023

did you put a chemical on the mould to produce the rust ?

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Shopdog posted this 01 May 2023

Interesting...

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delmarskid posted this 01 May 2023

I didn’t use anything but benign neglect. I have some rust blue stuff. I may try it on small projects to practice.

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Ken Campbell Iowa posted this 01 May 2023

for those of you demon kitchen table chemists, and think rust is pretty ... stop by walmart and mix 1/2 and 1/2 vinegar and hydrogen per-oxide . warm clean steel and devil's brew to about 110 F. and dip and watch the magic.

boil red rusty part in water until turns darker, steel wool off fuzzy stuff and start over with the acid dip ... repeat until bored. flush with clear water then oil real good.

kinda fun actually.

ken .. oh, practice with scrap for a while. results are varied... the fun part ... different steels do different things.