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Tips, Techniques, and Questions -- Technical questions or tips

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  #1  
Old 2023-03-16, 1:52pm
WIZARD6787 WIZARD6787 is offline
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Default Flame annealing

Hello,

I am a hobbyist at best. I make marbles by mashing COE 104 together and that is it. The largest I make is 1 1/4"

I want to buy a hot head torch. Flame anneal the marbles by getting it bright red and then cooling it in the flame until dull red. Then put it in a crock pot with dried vermiculite on high for an hour then cool in the crock pot.

Any guesses about the likelihood of success? I know there is a lot of stress in my marbles as I mash all sorts of colors together.

Normally I would just try it and then drop the marbles on concrete. Thing is I need to make 20 marbles for my daughters wedding and only have 5 days to make them when I get back to the USA from the UK
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  #2  
Old 2023-03-16, 3:18pm
ESC ESC is offline
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Number 1. making a 1 1/4" marble on a Hot Head is going to take forever. Number 2. making anything over 1/2" or so and expecting it survive after cooling in a crockpot is a crapshoot. Technically, you can cool them in the crockpot of vermiculite, but that is not annealing and their long term survival is questionable.

Does anyone near you rent bench space with access to a Minor or similar and a kiln to anneal those marbles? That's what I would be looking into. Good luck!
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  #3  
Old 2023-03-18, 2:19am
WIZARD6787 WIZARD6787 is offline
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Default Thank you!

Thank you that is just what I was looking for. I will buy a kiln.
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  #4  
Old 2023-03-18, 8:36am
ESC ESC is offline
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You're welcome and good luck!
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  #5  
Old 2023-03-18, 9:30pm
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KJohn KJohn is offline
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agree with all that, no such thing as flame annealing when you want them to last. It's a mis-named term for evening out the heat, sometimes folks get touchy even hearing that word but everything has its place.

A kiln is the best thing. Good luck! and Congratulations Post some pics in the gallery if you like.
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  #6  
Old 2023-04-03, 6:30pm
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Kiln is a great decision! In some cases, probably rare, a piece that has not been properly annealed can break years later.
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  #7  
Old 2023-04-04, 9:46am
rcktscientist rcktscientist is offline
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Alternative kiln idea:
Buy a Plug & Play PID ramp controller box for a 120v kiln ~$250
+ buy a ceramic thermal stove (for hot combs) ~$50
+ buy 1 sq. ft ceramic fiber blanket ~$20

$320 plus some time cutting the fiber blanket to create a 'door' and a little more time reading the manual and programming, then you can properly anneal marbles to your hearts content. That little oven probably holds at least 10 marbles. Perfect investment/cost/complexity for a hobbyist. Just be safe and smart with high temps and airborne blanket fibers.
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