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Reality Show Castings

[casting] Digest Number 3417

Messages In This Digest (7 Messages)

Messages

1a.

roto-caster update

Posted by: "DOC" doc@sympatico.ca   torobots

Wed Feb 27, 2008 1:36 pm (PST)



A whole lot a nuttin!

Still waiting for the bits to arrive. I've done most of the wood.

I like those projects where you can just go out and
buy what you need and a few bucks more makes
no difference. OK. Doesn't happen often but...

Twiddle, twiddle..... (Sound of thumbs twiddling! :-)))

For those new to this adventure I'm building a few of these.
http://www.solsylva.com/cnc/rotomold.html

DOC

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Messages in this topic (11)
1b.

Re: roto-caster update

Posted by: "Balsanu Gabi" gabi.balsanu@rdslink.ro   balsanu_gabi

Wed Feb 27, 2008 1:56 pm (PST)

Hi Doc,

Do you consider to sell that as a kit? If so I am very interested. I'll wait to see some photos.

Gabi

----- Original Message -----
From: DOC
To: casting@yahoogroups.com
Sent: Wednesday, February 27, 2008 11:40 PM
Subject: [casting] roto-caster update

A whole lot a nuttin!

Still waiting for the bits to arrive. I've done most of the wood.

I like those projects where you can just go out and
buy what you need and a few bucks more makes
no difference. OK. Doesn't happen often but...

Twiddle, twiddle..... (Sound of thumbs twiddling! :-)))

For those new to this adventure I'm building a few of these.
http://www.solsylva.com/cnc/rotomold.html

DOC

[Non-text portions of this message have been removed]

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Messages in this topic (11)
1c.

Re: roto-caster update

Posted by: "DOC" doc@sympatico.ca   torobots

Wed Feb 27, 2008 7:37 pm (PST)

Yes. I'll keep you posted.

DOC

At 11:45 PM 2/27/2008 +0200, you wrote:

>Hi Doc,
>
>Do you consider to sell that as a kit? If so I am very interested. I'll
>wait to see some photos.
>
>Gabi
>
>----- Original Message -----
>From: DOC
>To: <mailto:casting%40yahoogroups.com>casting@yahoogroups.com
>Sent: Wednesday, February 27, 2008 11:40 PM
>Subject: [casting] roto-caster update
>
>A whole lot a nuttin!
>
>Still waiting for the bits to arrive. I've done most of the wood.
>
>I like those projects where you can just go out and
>buy what you need and a few bucks more makes
>no difference. OK. Doesn't happen often but...
>
>Twiddle, twiddle..... (Sound of thumbs twiddling! :-)))
>
>For those new to this adventure I'm building a few of these.
><http://www.solsylva.com/cnc/rotomold.html>http://www.solsylva.com/cnc/rotomold.html
>
>DOC
>
>[Non-text portions of this message have been removed]
>
>

Buy my junk! http://www3.sympatico.ca/doc/robotone/for-sale.html

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Messages in this topic (11)
2a.

Plaster mold and plaster casting...

Posted by: "Case" djcaseanova@yahoo.com   djcaseanova

Wed Feb 27, 2008 5:06 pm (PST)

I am trying to make up a school project, but the issue I am having is
the expense of alginate. Someone suggested I simply use hydrocal to
make the mold, seal it real well with some clear coat (like krylon
clear coat) let it dry and then cast directly into that with hydrocal
or another plaster.

Is this doable? Is there anything I need to know about making a
plaster/plaster combo like this?? Thanks guys!!

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Messages in this topic (4)
2b.

Re: Plaster mold and plaster casting...

Posted by: "Evyn" infojunky@ceecom.net   macdudeus

Wed Feb 27, 2008 6:09 pm (PST)

On Thu, 28 Feb 2008 01:06:57 -0000, Case <djcaseanova@yahoo.com> wrote:

> I am trying to make up a school project, but the issue I am having is
> the expense of alginate. Someone suggested I simply use hydrocal to
> make the mold, seal it real well with some clear coat (like krylon
> clear coat) let it dry and then cast directly into that with hydrocal
> or another plaster.
>
> Is this doable?

Yes.

> Is there anything I need to know about making a
> plaster/plaster combo like this??

While sealing your mold a good coat of krylon will
work, you will have better results with potters
soap and/or steric acid/kerosene as your mold release.
In a pinch petrolium jelly thined with naphta works
well also.

You two biggest issue will be;

1. no plaster to plaster contact between the mold and
cast. Brush on your mold release.

2. NO over hangs, unless you are making a single cast
from your mold.

--
Evyn

Kudgetech, agressive recycling in a throwaway world.

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Messages in this topic (4)
2c.

Re: Plaster mold and plaster casting...

Posted by: "Case" djcaseanova@yahoo.com   djcaseanova

Wed Feb 27, 2008 6:14 pm (PST)

I planned on sparying it with at least a good 3 or 4 coats of krylon,
and on top of the krylon using a petroleum jelly as a release. I am
making a two part mold, which is where the complications may come up,
however, the model box is going to be made of wood, so really only one
side of the plaster mold will be exposed to the new plaster for the
casting.

One more thing.... will there be any detail loss using hydrocal
instead of an alginate? I am making a mold of a brain....

Thanks for the help!!!

--- In casting@yahoogroups.com, Evyn <infojunky@...> wrote:
>
> On Thu, 28 Feb 2008 01:06:57 -0000, Case <djcaseanova@...> wrote:
>
> > I am trying to make up a school project, but the issue I am having is
> > the expense of alginate. Someone suggested I simply use hydrocal to
> > make the mold, seal it real well with some clear coat (like krylon
> > clear coat) let it dry and then cast directly into that with hydrocal
> > or another plaster.
> >
> > Is this doable?
>
> Yes.
>
> > Is there anything I need to know about making a
> > plaster/plaster combo like this??
>
> While sealing your mold a good coat of krylon will
> work, you will have better results with potters
> soap and/or steric acid/kerosene as your mold release.
> In a pinch petrolium jelly thined with naphta works
> well also.
>
> You two biggest issue will be;
>
> 1. no plaster to plaster contact between the mold and
> cast. Brush on your mold release.
>
> 2. NO over hangs, unless you are making a single cast
> from your mold.
>
> --
> Evyn
>
> Kudgetech, agressive recycling in a throwaway world.
>

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Messages in this topic (4)
2d.

Re: Plaster mold and plaster casting...

Posted by: "Jeremy Cooper" jez2k@hotmail.com   jez926

Wed Feb 27, 2008 7:06 pm (PST)


Hi, I don't know if this will help, but I've been making Isle of Lewis chess figures out of Herculite stone powder. It looks like and is used in the same way as plaster of paris but it's incredibly strong, hence the name. It sets like stone and has quite a weighty feel to it. I don't know how much alginate costs so I can't offer a price comparison but I can highly recommend Herculite stone powder for use in latex moulds. Make sure you're buying Herculite and not Herculite II which is cheaper but weaker.

To: casting@yahoogroups.comFrom: djcaseanova@yahoo.comDate: Thu, 28 Feb 2008 01:06:57 +0000Subject: [casting] Plaster mold and plaster casting...

I am trying to make up a school project, but the issue I am having isthe expense of alginate. Someone suggested I simply use hydrocal tomake the mold, seal it real well with some clear coat (like krylonclear coat) let it dry and then cast directly into that with hydrocalor another plaster.Is this doable? Is there anything I need to know about making aplaster/plaster combo like this?? Thanks guys!!

__________________________________________________________
Telly addicts unite!
http://www.searchgamesbox.com/tvtown.shtml

[Non-text portions of this message have been removed]

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Messages in this topic (4)
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