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Joined: Jan 2016
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Boxlock
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Boxlock

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That open top crucible surprised me, wonder if it was staged.

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There are several videos of people using an open top crucible on you tube, one of which is Robin Brown. I think the charcoal is creating enough off gas to keep the parts in an oxygen free environment. Check out the crucible coming out of the oven at the 4 minute mark:

https://www.youtube.com/watch?v=oceR5f8d9WM


http://www.bertramandco.com/

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Originally Posted By: GGress
That open top crucible surprised me, wonder if it was staged.


Surprised me too. It appears that the bottom may be glowing red.

The open top and unknown, but seemingly significant, distance to splashdown is not in line with the text either.


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The interesting thing to me is the size of the crucible and the courseness of the charcoal. It looks like plenty of fuel to consume O2, and apparently very little of it burns down. Even with smaller examples, it's always been a curiosity to me when some folks put a slip of paper in a crucible to 'consume excess oxygen'. He must have case coloring in his DNA, touching the parts seems to be no problem?

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I always put the small piece of paper in my crucible but notice that it doesn't make a difference if packed good and tight with coal. I take my lid off right at the tank but believe that since the coal pack is at such a temp any oxygen will be burnt immediately. When I crack my oven at quench time there is always a subtle flame from the lid as oxygen is entering the oven chamber and being burnt. That is why I have made a longer crucible so that the parts sit deeper in it preventing any oxygen exposure causing a flash burn. At 1375F any oxygen is going to be burnt nearly immediately.

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Hereford

I was looking at a later 40's LC Smith with much remaining color and noticed the side plate, top and bottom receiver screws looked CCH'd along with the receiver/sideplates/trigger plate.

Are you using your actual screws to assemble prior to CCH'ing? Any problems with removal?

Thanks

Travis

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The receiver is assembled during the cch. I have everything snug but not fully tight and haven't had any issues affecting their timing but they are a bit tighter as expected. I have had the rear tang screw bend once which I thought was odd but have heard of other people having that happen on Smith's but is uncommon.

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