copper chips

Hi I am casting a 8 in j tube and I have about 20 lbs of copper chips and I was thinking of putting 3in fire clay perlite mix then mix fireclays copper and add that too the outside maybe add perlite to it not sure thanks Thom from Traverse city Michigan
Or add it around the bench pipes I can get all the steal chips I want the copper is harder to get

Best advice, sell theses, to fund something else.

Don't put any around the burn tunnel and heat riser, that would be a waste, and in the bench, do you realy want the heat to be transmited faster? Well, even as decorative aditive to your cob, it would suck i think, turning to green over the years!

I second Satamax's advice.

i think that would counter productive. you want to insulate the riser not make it more thermally conductive.

Thom; Seems like the copper would be more valuable as scrap. As far as using the steel shavings in your mass ,you could, but if I did that I would end up cutting my hands to ribbons when mixing the cob. You could pour them over a layer of cob and put more cob on top BUT ... If you ever wanted to unbuild your mass it could get bloody. Much better things to stick in your mass for heat holding. Your riser should be nothing but insulation, perlite & fireclay.

I was thinking the bench to spread the heat, the chips R not that bad to work with,or maybe the hot spots thanks for the info