the crucible volume is about 2 ounces. The final design of the crucible will be enclosed tightly except for a small .5mm diameter hole at the bottom and a 1mm diameter hole at the top through which silver solder will feed.

I was wondering. In my experiments should I worry about the thing exploding?

  • $\begingroup$ you should worry about your graphite slowly oxidizing. Slowly. $\endgroup$
    – permeakra
    Oct 1, 2015 at 16:53
  • $\begingroup$ So producing CO2? $\endgroup$ Oct 1, 2015 at 17:27
  • $\begingroup$ Well, if both holes get clogged somehow, and then you seal it shut and start heating... though the volume is too small for a decent explosion, this does not sound good. $\endgroup$ Oct 1, 2015 at 17:43
  • $\begingroup$ What type of shield do you recommend? Will some acryllic panels work? The size of the crucible internally is now 6mm ID x 30mm Depth. $\endgroup$ Oct 1, 2015 at 18:26

1 Answer 1


Silver will absorb oxygen readily from air while molten and spatter as it cools. This is hardly an explosion, but some care should be taken to avoid being spattered with hot particles ejected from the crucible or plugging the holes.


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