HomeRoast Digest


Topic: veering into drum materials (was: careening into roasting drums) (4 msgs / 137 lines)
1) From: Ed Needham
As mentioned by someone else here recently, the 'food grade' classification
probably is more applicable to wet foods than dry, but it is probably better
to be safe than sorry.
I'd be a bit cautious about stove pipe materials.
Ed Needhamhttp://www.homeroaster.comed
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2) From: floyd burton
Don't think you would have any contamination issues with about any type of
SS you choose.  However-how many holes will you have to drill-SS is a bear
to work with.  Made my drum out of cold rolled steel-a snap to work with and
I think most of the commercial roaster manufacturer's use steel drums.  The
Hothow's (love that name) at Intelligentsia are cast.
Yep a ss drum would be attractive and probably work very well.  They don't
retain heat as well as steel or cast iron for some reason-Ed sez his ss drum
cools down very rapidly when he takes it out of the roaster.  Maybe a
function of the weight of the metal.  Made my first drum from 18 gauge-will
make another out of 16 gauge cold rolled steel with 1/8" perfs already made
in the material.  Again I don't think u will have any problems unless you
use something like zinc coated or maybe copper.  Couldn't use lead cause it
has too a melting point.
Let us know what u decide.  Oh my 18 gauge cold rolled steel drum which is
10" x 23" (dia and length) cost only $45 and that included forming the drum
on a roller.  The estimate for 18 gauge ss for the same drum was $95.

3) From: john kangas
<Snip>
I'd theorize that Ed's drum cools off quickly due to the perforations, 
there's a lot of space for air movement, and lots of surface area. Stainless 
is a relatively bad conductor of heat, and does tend to retain heat longer 
than other metals.
Stainless has a much higher melting point than aluminum, but since aluminum 
is so much better at wicking heat away, I end up using double or triple the 
amperage to weld aluminum.
John
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4) From: john kangas
<Snip>
I know, it's cheating, but if you know anyone with a plasma cutter, those do 
a really good job of making holes in stainless. Someone could even perforate 
a drum with line drawings. But that's cheating.
John
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