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oryx · March 16, 2013, 06:35 PM

Beagle is correct - not hot enough to fill out the mould evenly. It is cooling as it is pouring.
If casting with a propane burner, be careful with the temp as it can also get too hot and vaporize lead, which is harmful to breathe. A pot usually keeps temps below the vaporization point.
rather than dipping your mould into the lead, you can simply pour a few rounds and just dump them with your sprue. Your mold will come up to temp quickly. You can then just toss the rounds and sprue back into the pot and remelt.
If they get too hot they can appear "frosty"

March 16, 2013, 06:35 PM	#3
oryx Senior Member Join Date: December 26, 2008 Posts: 142	Beagle is correct - not hot enough to fill out the mould evenly. It is cooling as it is pouring. If casting with a propane burner, be careful with the temp as it can also get too hot and vaporize lead, which is harmful to breathe. A pot usually keeps temps below the vaporization point. rather than dipping your mould into the lead, you can simply pour a few rounds and just dump them with your sprue. Your mold will come up to temp quickly. You can then just toss the rounds and sprue back into the pot and remelt. If they get too hot they can appear "frosty" Last edited by oryx; March 16, 2013 at 06:44 PM.