Apart from one set of tongs the a school was throwing away, I've made my own tongs and pouring shanks. Mostly they are based on commercial tongs, but my #10 tongs are designed by me for one person use.
From left to right; #30 tongs, #10 tongs, #12 tongs (commercial), #20 tongs, #12 pouring shank.
I'm just gearing up to do larger pours. These tongs will handle a #30 crucible, which is about 90 lb of bronze.
A homemade #30 lifting tongs.
Reverse detail view.
These lifting tongs hold a #10 crucible (30 lb of bronze). A small ring is welded on the back of the tongs which acts as a pivot for a 'T' handeled hook held in the right hand. The hook gives a lot of control. I got this idea from a show on discovery channel showing the casting of an archimedes screw using ancient techniques.
Here's a view of the tongs in action.
More to come...