
this is a view of coil that has 3 wraps which I found out doesn't make any difference how many coils you use it does a good job.
This is how i fluidized casting sand, I used the finest and blasting sand I could get from our local concrete supply outfit and they also carry bentonite, fireclay and vulcanic perlite. The sand was mixed to about 10% bentinite clay.
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