[time-nuts] Thunderbolt stability and ambient temperature
lists at cq.nu
Wed Jun 10 20:24:35 EDT 2009
Just for reference:
It takes about 700 pounds of steel shot to fill up the region between
a 30 gallon steel drum and a 55 gallon steel drum. You can get roughly
2" of foam in between the outside of the 55 gallon steel drum and a
110 gallon drum. A 2x4 wall around the 110 gallon drum can be useful
for taking care of drafts.
Steel may not be perfect, but in shot form - it's cheap.
On Jun 10, 2009, at 8:19 PM, J. Forster wrote:
> Take a look here:
>> The thermal conductivity of cast iron is relatively poor for a metal.
>> Water has even lower thermal conductivity however this can be
>> by stirring.
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