Dual Fuel Gingery Type Furnace

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tom osselton:
Looks good all painted! I'm just wondering if the bin should have been made out of a 2x12 after all its better to have too much sand than not enough for those multi casting sesions.

inthesticks:
Ha Ha Ha Yes John I am going to feel bad dumping dirty wet sand and clay into it :)

Tom sounds like you intent on doing a load of casting. For occasional casting I think its better to have most of your green sand in sealed 5 gallon containers on the shelf underneath. Saves you retempering 400 lbs of sand if you let it dry out between casting sessions.

Well that heat wave is going to break tonight :clap:. Spent the day indoors and built a pouring shank for the clay graghite crucible. I modified surplus oversized fireplace tongs I picked up for a song from Princess Auto years ago for this purpose. After alot of bending and filling and bending and welding I came up with this.

Cheers
CB

tom osselton:
Thats not a bad idea having the tangs like that! I just use the basic ring that the crucible sits in for pouring but a couple tangs like that would stop the worry of tipping it to much. I store my sand in a plastic container also and find that after storage for a while it gets that funky/mildew smell although it does clear up after a while.
With redoing the garage this summer I haven't done anything in the garage but I got my tig set up again yesterday I'm building a vacuform machine that will live at Protospace so I'll have to weld some aluminum before insulating and putting the osb on the walls, should be interesting.

inthesticks:
The clay graghite crucible will only be used for a very few # of iron or brass melts. The idea of 20 lb of molten iron or brass popping out of my pouring shank is pretty scary :zap: could result in serious injury or fire I wouldn't take the chance. For a #8 or smaller I think this will do, for a #10 or higher heavier pouring shanks are required, some with spring loaded retaining hooks and various other mechanisms. For aliminum I plan on using only steel crucibles so welding on hooks and eyes makes it handier for pouring.

You need air tight lids. With all air excluded grouth should not occur.

Cheers
CB

SwarfnStuff:
CC, the only thing that comes to mind regarding your tongs is a question about pouring.
Is there going to be enough leverage / grip to control the pour? A crucible of molten brass at that distance might just be wanting to tip out faster than you might like. Would a short bar welded on at right angles 1/4 way down one of the shafts give you more tipping control?? From the pics I gather you are right handed so perhaps on the left side?
Bear in mind that I have yet to build my furnace let alone do any melting so may be looking for problems that are not there.
Great re-purposing of the fireside tongs though and the lugs are a great idea. That crucible ain't going anywhere you don't allow.
John B

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