John Rodgers on sun 17 apr 05
Murphy's works, but tincture of green soap works better. In either case,
cut the soap 50/50 with water. Apply with a natural sponge, work up a
lather, then brush dry using good art painters 4 inch china bristle
brushes. Periodically wash the brushes out with alcohol.
Repeat the application process and dry brushing three times. After the
last dry brushing drip three drops of water on the surface. If it beads
as if waxed, it is ready to go. If it goes flat, apply another coat of soap.
After the cast, test the temperature, and once the plaster gets hot,
remove the plaster cast. You will do the removal when warm because the
new mold will be at its maximum expansion due to the heat, and excess
water of hydration will be between the mold and the model, to aid
removal, and the heat will have softened the soap, easing removal.
For my own mold making, there are times when using a model that I use
Polyease 2000, a silicone mold releasing agent in a spray can from
Polytek ( look up their website). I spray the model thoroughly.
Good luck,
John Rodgers
Chelsea, AL
Eric Suchman wrote:
>Is Murphy's oil soap a good mould release for 'plaster to plaster' as well
>as 'subject' to plaster, as a releasing agent?
>Thanks,
> Eric in oceanside
>
>______________________________________________________________________________
>Send postings to clayart@lsv.ceramics.org
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>You may look at the archives for the list or change your subscription
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>Moderator of the list is Mel Jacobson who may be reached at melpots@pclink.com.
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>
Ceramic Design Group on sun 17 apr 05
It works, but as Mr. natural says, "use the right too for the right job"
The best mold release, plaster to plaster, rubber to plaster, plaster
to rubber, is
Polyurethane Parting Compound (PUP)
available from Permaflex Mold in Columbus Ohio.
Fels Naptha works too. Use PUP, it works best
Jonathan
Jonathan Kaplan
Ceramic Design Group
PO Box 775112
Steamboat Springs CO 80477
(970) 879-9139
Plant location for commercial deliveries excluding USPS
1280 13th Street Suite K
Steamboat Springs CO 80487
info@ceramicdesigngroup.net
www.ceramicdesigngroup.net
On Apr 17, 2005, at 8:16 PM, Eric Suchman wrote:
> Is Murphy's oil soap a good mould release for 'plaster to plaster' as
> well
> as 'subject' to plaster, as a releasing agent?
> Thanks,
> Eric in oceanside
>
> _______________________________________________________________________
> _______
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change your subscription
> settings from http://www.ceramics.org/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached at
> melpots@pclink.com.
>
>
S. Morris on sun 17 apr 05
yes!! mumurphy'sil soap is great. It's good because
unlike using a pepetroleumased rereleaselike
vavasalineit won't clog the pores of your plaster (
that's how it was explained to me) and will still be
alright for slip casting. I generally water mine down
a bit, before I brush it on, and I use two layers...
Paint one on let it dry, do a second, dry and then I
buff it with a cheese cloth just to make sure there
aren't any brush strokes left.
-Happy mold making
ststephanie.
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Eric Suchman on sun 17 apr 05
Is Murphy's oil soap a good mould release for 'plaster to plaster' as well
as 'subject' to plaster, as a releasing agent?
Thanks,
Eric in oceanside
Wayne Seidl on mon 18 apr 05
According to "The Clay Lover's Guide to Making Molds" by Peirce
Clayton (ISBN 1-57990-186-7) A Lark Ceramics Book
"...a 50-50 mix of "commercial oil soap, the kind found in the
housecleaning aisle at the supermarket" is a recommended release
agent for the following items:
Brick 2 coats of soapy release=20
clay, fired five coats of soapy release
clay, glazed two coats of soapy release
concrete (cover with clay first) 5 coats on bare spots
glass and metal 2 coats
plaster 4 coats
wood, two coats of polyurethane followed by two coats of soapy
release agent..."
He recommends the use of a light layer of talc once the release has
dried, brushed on to the surfaces of the plaster mold, whether the
mold is being used for slip or moist clay.
Hope that helps,
Wayne Seidl
-----Original Message-----
From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG] On Behalf Of Eric
Suchman
Sent: Sunday, April 17, 2005 10:17 PM
To: CLAYART@LSV.CERAMICS.ORG
Subject: "Murphy's " mould release
Is Murphy's oil soap a good mould release for 'plaster to plaster'
as well
as 'subject' to plaster, as a releasing agent?
Thanks,
Eric in oceanside
____________________________________________________________________
__________
Send postings to clayart@lsv.ceramics.org
You may look at the archives for the list or change your
subscription
settings from http://www.ceramics.org/clayart/
Moderator of the list is Mel Jacobson who may be reached at
melpots@pclink.com.
Steve Irvine on mon 18 apr 05
Eric,
I've been using Murphy's Oil Soap for years as a mould soap and it works fine for me.
I use it as a release when making two part plaster moulds, and as a release for the clay master to
plaster casting.
Be sure to use the thicker type sold in the bottles. Although it might be tempting to use the type
available in spray bottles, it is too thin to work well as a mould release.
Steve Irvine
http://www.steveirvine.com
Louis Katz on mon 18 apr 05
Yes, for plaster to plaster. If it is the paste in the tub water it
down 2 to 1. If it is the liquid in the squeeze bottle use it straight.
The scent is Sassafras I think. I prefer English Crown but I have not
has any for 15 years.I have been using Murphies.
Soap is not a very good release for non plaster originals. It will work
but other parting agents are better. I often used to use paste wax. I
used a bit (about 2 tablespoons) of rubbing alchol in a quart of water
to spray on the original to help release bubbles. It seems to work for
me.
Louis
On Apr 17, 2005, at 9:16 PM, Eric Suchman wrote:
> Is Murphy's oil soap a good mould release for 'plaster to plaster' as
> well
> as 'subject' to plaster, as a releasing agent?
> Thanks,
> Eric in oceanside
>
> _______________________________________________________________________
> _______
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change your subscription
> settings from http://www.ceramics.org/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached at
> melpots@pclink.com.
>
Frank Colson on mon 18 apr 05
One of the best, most reliable, and consistant plaster mould releases is "
petrolum jelly". Sometimes known as the brand name "Vasoline". It is cheap
and available at any drug or food supermarket. Apply with soft brush.
Plaster to plaster, prototype (metal, clay, stone, etc.) to plaster.
Murphy's oil soap, mineral oil (baby oil), motor oil, dish detergent, and
silicon spray also work as a release, but "petrolum jelly" is cheap, easy to
store, and always reliable.
Frank Colson
www.R2D2u.com
----- Original Message -----
From: "Eric Suchman"
To:
Sent: Sunday, April 17, 2005 10:16 PM
Subject: "Murphy's " mould release
> Is Murphy's oil soap a good mould release for 'plaster to plaster' as well
> as 'subject' to plaster, as a releasing agent?
> Thanks,
> Eric in oceanside
>
>
____________________________________________________________________________
__
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change your subscription
> settings from http://www.ceramics.org/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached at
melpots@pclink.com.
Craig Clark on mon 18 apr 05
Eric, Muphy's Oil soap works quite well as a plaster to plaster
seperator. Just be sure to brush on two or three thin coats with a
little dry time between each one.
Hope this helps
Craig Dunn Clark
619 East 11 1/2 st
Houston, Texas 77008
(713)861-2083
mudman@hal-pc.org
>
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