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throwing concrete (i am not kidding!)

updated tue 15 jun 99

 

Bob Branch on tue 8 jun 99

Hey Clayarters

How's about this one! I had a man ask me if I could duplicate one of those
large pots that usually mark the beginning of a driveway. Problem is - it
is concrete and obviously molded, he definitely wants concrete. Has any one
tried to throw concrete? If so tell me about it please.
-----------------------------------------
Bob Branch , b-branch424@att.net (Fairport, NY, USA)
[Any disclaimer I can think of applies]
(Antispam Warning: Remove the numbers in my email address to reply via
email. )

Kelley Webb Randel on wed 9 jun 99

Hey Bob!
I have not thrown concrete! I can't imagine doing it
either! But I have built slab form bowls that were 50%
conrete and 50% raku clay! Then I rakued em, and talk
about heavy suckers!
I tried about six different mixtures of clay/concrete,
before I was satisfied. Do you think he'd mind a mix?
Good luck!
Kelley Webb Randel--
" . . . looking forward into the past
and backward into the future,
i walk along the highest hills
and i laugh about it all the way . . ."
e.e.cummings
> ----------------------------Original message----------------------------
> Hey Clayarters
>
> How's about this one! I had a man ask me if I could duplicate one of those
> large pots that usually mark the beginning of a driveway. Problem is - it
> is concrete and obviously molded, he definitely wants concrete. Has any one
> tried to throw concrete? If so tell me about it please.
> -----------------------------------------
> Bob Branch , b-branch424@att.net (Fairport, NY, USA)
> [Any disclaimer I can think of applies]
> (Antispam Warning: Remove the numbers in my email address to reply via
> email. )

Pamala Browne on wed 9 jun 99

I'll be the naysayer and say it cannot be done.I've molded ,stuccoed and
built fountains with concrete and it just doesn't have the vertical
strength.Lime will help but concrete won't hold a shape unless it's in a
mold.I know it would be a lot of work,but why don't you throw the pot in
clay, and then make a mold from it? The mold would be reusable and you could
make more.Worth considering.Good Luck!
----- Original Message -----
From: Bob Branch
To:
Sent: Tuesday, June 08, 1999 2:42 PM
Subject: Throwing concrete (I am not kidding!)


> ----------------------------Original message----------------------------
> Hey Clayarters
>
> How's about this one! I had a man ask me if I could duplicate one of
those
> large pots that usually mark the beginning of a driveway. Problem is - it
> is concrete and obviously molded, he definitely wants concrete. Has any
one
> tried to throw concrete? If so tell me about it please.
> -----------------------------------------
> Bob Branch , b-branch424@att.net (Fairport, NY, USA)
> [Any disclaimer I can think of applies]
> (Antispam Warning: Remove the numbers in my email address to reply via
> email. )
>

Dwiggins, Sandra (NCI) on wed 9 jun 99

Hey Bob---
This is a perfect example of why I might stop taking commissions!!! This takes
the cake! I've heard that 'No' is a word that one can use occasionally.
Sandy


-----Original Message-----
From: Bob Branch [SMTP:b-branch@att.net]
Sent: Tuesday, June 08, 1999 5:43 PM
To: CLAYART@LSV.UKY.EDU
Subject: Throwing concrete (I am not kidding!)

----------------------------Original message----------------------------
Hey Clayarters

How's about this one! I had a man ask me if I could duplicate one of those
large pots that usually mark the beginning of a driveway. Problem is - it
is concrete and obviously molded, he definitely wants concrete. Has any one
tried to throw concrete? If so tell me about it please.
-----------------------------------------
Bob Branch , b-branch424@att.net (Fairport, NY, USA)
[Any disclaimer I can think of applies]
(Antispam Warning: Remove the numbers in my email address to reply via
email. )

James Blossom on wed 9 jun 99

Hi Bob.

I guess it takes all kinds... if you are serious about this commision,
you don't throw the concrete, you make a rabbit-wire frame to act as
a tension member, and smear the concrete over this wire 'mold'. Same
technique as cement boats. Oh, & try to get concrete with smallish
aggragate.

"always the beautiful answer who asks a more beautiful question."
e.e. cummings
-----Original Message-----
From: Bob Branch
To: CLAYART@LSV.UKY.EDU
Date: Tuesday, June 08, 1999 2:43 PM
Subject: Throwing concrete (I am not kidding!)


>----------------------------Original message----------------------------
>Hey Clayarters
>
>How's about this one! I had a man ask me if I could duplicate one of
those
>large pots that usually mark the beginning of a driveway. Problem is - it
>is concrete and obviously molded, he definitely wants concrete. Has any
one
>tried to throw concrete? If so tell me about it please.
>-----------------------------------------
>Bob Branch , b-branch424@att.net (Fairport, NY, USA)
>[Any disclaimer I can think of applies]
>(Antispam Warning: Remove the numbers in my email address to reply via
>email. )

nikom chimnok on thu 10 jun 99

Howdy Mr. Bob,
Nor have I thrown concrete (I can't even throw clay, so there!) We
do make concrete planters, however, in a steel form with chicken wire
reinforcement, troweling the concrete into place, three parts sand to one
cement, takes 5 days to set up.
Once, however, I visited a factory where they were were doing
something like roller-forming concrete balusters (I think they're called,
you know the uprights in a stair railing?). Very industrial setup, I can't
remember it exactly, but they had the concrete wrapped in canvas and a
spinning stainless steel shaper and a vacuum machine to dewater the concrete
as it was being formed. Fast--they were really cranking them out.
I bet if you had a couple hundred thousand dollars and an industrial
engineer to design the setup, you could "throw" concrete pots yourself! But
it's a lot cheaper to trowel the concrete into a form and then grind off the
mold lines.
Good luck,
Nikom in Amazing Thailand
>> ----------------------------Original message----------------------------
>> Hey Clayarters
>>
>> How's about this one! I had a man ask me if I could duplicate one of those
>> large pots that usually mark the beginning of a driveway. Problem is - it
>> is concrete and obviously molded, he definitely wants concrete. Has any one
>> tried to throw concrete? If so tell me about it please.
>> -----------------------------------------
>> Bob Branch , b-branch424@att.net (Fairport, NY, USA)
>> [Any disclaimer I can think of applies]
>> (Antispam Warning: Remove the numbers in my email address to reply via
>> email. )
>
>

douglas adams on sun 13 jun 99

Don't try to throw with concrete, as it is very caustic and will burn the
hands, the ph balance is not in our favor and you will pay for it if you
handle(concrete) for very long, maybe enough to stop throwing clay a month
or so. Throw a clay pot duplicate, make a plaster mold then cast it in
concrete. Charge him out the ying yang, but explain the work you had to do
to get him what he wanted.
God bless America!
>

Kelley Webb Randel on mon 14 jun 99

Hey Clayart!
The cement clay I used consisted of:
2 parts Red Art
2 parts talc
1/2 sand
1/2 cement
but as I recall, I always ended up adding more cement to
the mix. And no way did I throw, I used slump molds to
make 5 - 10 pound bowls that were smooth inside and
rough rough rough outside.
You don't have to bisque these forms, I just splashed
some raku glaze inside and raku'd em! Heavy suckers,
though. And DO NOT immerse in water! They had a
tendency to explode! Just leave them in the reduction
container until cool.
I welded up some rebar holders in varying designs to
hold the bowls, and they sold for everything, from bird
baths to pagan ritual vessels.
I would not vouch for water containing properties,
though sometimes, if the glaze was particularly nice,
I'd spray a fixative on the inner surface.
Some people just liked to look at them!
Be well,
Kelley Webb Randel
Rakugddss@worldnet.att.net
> ----------------------------Original message----------------------------
> Don't try to throw with concrete, as it is very caustic and will burn the
> hands, the ph balance is not in our favor and you will pay for it if you
> handle(concrete) for very long, maybe enough to stop throwing clay a month
> or so. Throw a clay pot duplicate, make a plaster mold then cast it in
> concrete. Charge him out the ying yang, but explain the work you had to do
> to get him what he wanted.
> God bless America!
> >