Thursday, November 7, 2019

Small very light weight foundry using ceramic blanket and statanite



The lid is always the hardest.   Found an old galvanized steel feed pan.

The body is from an old shop vac.  Apparently some where in its life water has frozen and bulged out the bottom. 
The burner hole was cut with a hole saw.  Maybe not a good idea in that it grabbed because it breaks the 3 tooth in the work rule.  Have yet to check the saw for damaged teeth.  Did bend the pilot bit.

Attached the base with standoff's cut from old iron natural gas pipe.  The base is from a convection oven.



Roughly laid out three holes with the divider.

May need to tweak level a bit but it will work and that's what counts.





Added hooks to the lid.


















Replaced the blanked in the body and cut the burner hole in the blanket.  Sharpened the pipe end and used it to cut through the blanket using a twisting motion.  Easy!



















Still need to put the hooks on.



Ready for first firing.   Maybe its best to coat the bottom of the furnace first.  Its the hardest to coat and requires the thinnest satanite.  I think I may have had it too stiff on the lid.  Ran over the lid with a wet brush, maybe that helped bond it.
Used the 3/4" naturally aspirated burner from the test furnace.

After firing.   The outside of the lid and top of cylinder did not get hot enough.  Will try it with stand offs.

Click twice to see the videos.


aaaaa
Melted some aluminum scrap to test the furnace.  First muffins.

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