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Old 2012-05-05, 4:27pm
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Jngljnke Jngljnke is offline
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Join Date: Jan 31, 2012
Location: Houston (ish), TX
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It depends on many variables. What you are making and what colors you are using are among the most important in my opinion. Some striking colors won't strike at 1050. Most start at 1080, some at 1200. Cadmium colors don't need to go over 1050. Heavy chrome colors need to strike 1070ish...

I make multi piece vessels. I garage at 1050 to avoid striking colors while I'm garaging. Keeping a higher temp is beneficial if you are reworking something, it reaches working temp faster.

When I'm annealing I also follow the 1hr per 1/4" rule. For vessels I add the wall thickness only. I sit at 1080 for an average of two hours, ramp to 1200 @ 300 per hr, sit for 1 hr, ramp down @ 150 per hr to below the strain point (I chose 925), sit for an hour (relevant to size/anneal time), ramp down to 800 @ 300 per hr (I heard this is the last strain point for boro), and shut off.

I'm sure ten people can give you fifty ways to do it. Like I said, depends on what you're making.
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