Barney Adams on mon 16 apr 01
This reminds me of when I was working in Atlanta some years ago.
A building was going up in around downtown. They would pour
concrete in a round form and set bolts and rebar in. When it set they
would lift the form for the next floor and repeat. The were up pretty good
ways
before I left. The form was made of steel from what I could see from
the highway. Would have to be to hold the weight I imagine.
Barney
steve dalton wrote:
> Greetings,
> Well I guess the cardboard form companies can rest assured...the idea of
> being able to reuse the tubes didn't work(To cast the chimney one would
use
> the cardboard tubes used for casting concrete pillars. Also for more
> reference see David Hendley's article on casting a chimney in the Febuary
> 2001 issue of Ceramics Monthly). Actually, I think there was more of a
mess
> than anything else, trying to tamp down the mixture loosened the plastic
> sheeting but I was able to reuse everything before it all set up or had
been
> ruined. Now I'm working on getting the sections up in place, what a
chore!
> I made them 2 feet long and they're heavy. They're 12 inches in diameter
> with an 8 1/4 inch center hole. So far I have 2 in place with roof
flashing
> tightly bound with...hose clamps! Whatever works!
>
> One thing I'm doing is making up a mortar mixture of 50/50 portland cement
> and fire clay and setting each section with that. Less of a chance for
> leaking and ruining my sheeting, also for leveling and filling any gaps.
I
> figured my chimney might outlast my kiln. The first 6 feet is regular
> firbrick.
>
> Well, I have 2 more to get up and I figured I should have them up by this
> weekend. Then it's firing time!!! Happy potting everyone.
>
> If anyone wants to try this, here's the mixture I used.
>
> 1/3 Portland Cement
> 1/3 AP Green
> 1/3 Broken K23's
>
> Thanks alot David for the idea!
>
> Steve Dalton
> sdpotter@gte.net
> Clear Creek Pottery
> Snohomish, WA
>
>
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David Hendley on mon 16 apr 01
Ha, I hate to say I told you so, but...........
I have used Sonotubes for several things, including building
my house, which has some 9 foot tall piers, and I just don't
see how they could be re-used.
As for heavy weight, you should have seen me trying to install
my 18" diameter chimney sections!
I let the chimney article sit around for a year before I sent it
to CM, and they took a year to publish it, so my chimney is
now over 3 years old, and still in good condition. Some rust
is starting to develop on the edges of the galvanized pipe,
but the castable is still in perfect condition. And my wood-
fired kiln sends lots of flame up the chimney.
I caulked around the joint between my commercially made
and homemade sections with regular black tar roofing caulk,
and, surprisingly, it has held up fine.
Thanks for the report.
--
David Hendley
Maydelle, Texas
hendley@tyler.net
http://www.farmpots.com/
----- Original Message -----
From: steve dalton
To:
Sent: Monday, April 16, 2001 4:37 PM
Subject: Cast Chimney update
| Greetings,
| Well I guess the cardboard form companies can rest assured...the idea of
| being able to reuse the tubes didn't work(To cast the chimney one would
use
| the cardboard tubes used for casting concrete pillars. Also for more
| reference see David Hendley's article on casting a chimney in the Febuary
| 2001 issue of Ceramics Monthly). Actually, I think there was more of a
mess
| than anything else, trying to tamp down the mixture loosened the plastic
| sheeting but I was able to reuse everything before it all set up or had
been
| ruined. Now I'm working on getting the sections up in place, what a
chore!
| I made them 2 feet long and they're heavy. They're 12 inches in diameter
| with an 8 1/4 inch center hole. So far I have 2 in place with roof
flashing
| tightly bound with...hose clamps! Whatever works!
|
| One thing I'm doing is making up a mortar mixture of 50/50 portland cement
| and fire clay and setting each section with that. Less of a chance for
| leaking and ruining my sheeting, also for leveling and filling any gaps.
I
| figured my chimney might outlast my kiln. The first 6 feet is regular
| firbrick.
|
| Well, I have 2 more to get up and I figured I should have them up by this
| weekend. Then it's firing time!!! Happy potting everyone.
|
| If anyone wants to try this, here's the mixture I used.
|
| 1/3 Portland Cement
| 1/3 AP Green
| 1/3 Broken K23's
|
| Thanks alot David for the idea!
|
| Steve Dalton
| sdpotter@gte.net
| Clear Creek Pottery
| Snohomish, WA
steve dalton on mon 16 apr 01
Greetings,
Well I guess the cardboard form companies can rest assured...the idea of
being able to reuse the tubes didn't work(To cast the chimney one would u=
se
the cardboard tubes used for casting concrete pillars. Also for more
reference see David Hendley's article on casting a chimney in the Febuary
2001 issue of Ceramics Monthly). Actually, I think there was more of a m=
ess
than anything else, trying to tamp down the mixture loosened the plastic
sheeting but I was able to reuse everything before it all set up or had b=
een
ruined. Now I'm working on getting the sections up in place, what a chor=
e!
I made them 2 feet long and they're heavy. They're 12 inches in diameter
with an 8 1/4 inch center hole. So far I have 2 in place with roof flash=
ing
tightly bound with...hose clamps! Whatever works!
One thing I'm doing is making up a mortar mixture of 50/50 portland cemen=
t
and fire clay and setting each section with that. Less of a chance for
leaking and ruining my sheeting, also for leveling and filling any gaps. =
I
figured my chimney might outlast my kiln. The first 6 feet is regular
firbrick.
Well, I have 2 more to get up and I figured I should have them up by this
weekend. Then it's firing time!!! Happy potting everyone.
If anyone wants to try this, here's the mixture I used.
1/3 Portland Cement
1/3 AP Green
1/3 Broken K23's
Thanks alot David for the idea!
Steve Dalton
sdpotter@gte.net
Clear Creek Pottery
Snohomish, WA
| |
|
