ISEN-ASTC-L is a service of the Association of Science-Technology Centers
Incorporated, a worldwide network of science museums and related institutions.
*****************************************************************************
Bummer! Sometimes I feel like one of those little kids with one of those
hammer-hitting practice devices that you hit one peg down and another
one pops up!
Well at least alcohol is one of the least hazardous solvents to work
with as opposed to Turpentine which may be natural and very toxic!
John B
-----Original Message-----
From: Informal Science Education Network
[mailto:[log in to unmask]] On Behalf Of Reagan Cole
Sent: Monday, October 08, 2007 12:29 PM
To: [log in to unmask]
Subject: Re: "Green" paint and sealant recommendations
ISEN-ASTC-L is a service of the Association of Science-Technology
Centers
Incorporated, a worldwide network of science museums and related
institutions.
************************************************************************
*****
Shellac: wonderful organic, high voc!
Now, what someone needs to find is a non voc solvent or even an exempt
solvent for lac resin. The usual formula contains either isopropyl or
ethyl alcohol as the solvent so, you've definitely got yourself a voc
based mixture. Water and shellac doesn't work out. One possibility is
India ink without the pigment.
Be careful. There are quite a few naturally occurring solvent which are
volatile and photo chemically active. Alcohols and turpenes would
produce a remarkably potent photochemical smog.
Reagan Cole, PhD
Exhibits Engineer
Museum of Life and Science
433 Murray Avenue
Durham, NC 27704
(919)220-5429 x371 (phone)
(919)220-9639 (fax)
[log in to unmask]
www.ncmls.org
-----Original Message-----
From: Informal Science Education Network
[mailto:[log in to unmask]] On Behalf Of John Bowditch
Sent: Monday, October 08, 2007 12:05 PM
To: [log in to unmask]
Subject: Re: "Green" paint and sealant recommendations
ISEN-ASTC-L is a service of the Association of Science-Technology
Centers Incorporated, a worldwide network of science museums and related
institutions.
************************************************************************
*****
Hi Jeff,
Shellac is the miracle 19th century finish. I have used it extensively
over the years, it even works very well as lacquer for brass, giving it
a real golden color if you use the orange version. Two tips; first,
always check the shellac you use to make sure it's up to date. Old
shellac doesn't always dry properly. So paint a small area and let dry
(should dry in about 15 minutes). Second, always cut the stuff you buy
at the store 50-50 with denatured alcohol. Then be patient! You will be
applying about 10 coats in a typical application and these dry almost
instantly so you can keep going. At about 6-7 coats the magic moment
happens and the thing just glows.
As an added bonus the stuff is more or less reversible: just rub it down
with steel wool (scotch brite is actually better) saturated with alcohol
and the finish can be restored, even if it has been damaged.
John B
-----Original Message-----
From: Informal Science Education Network
[mailto:[log in to unmask]] On Behalf Of Jeff Courtman
Sent: Monday, October 08, 2007 10:44 AM
To: [log in to unmask]
Subject: Re: "Green" paint and sealant recommendations
ISEN-ASTC-L is a service of the Association of Science-Technology
Centers Incorporated, a worldwide network of science museums and related
institutions.
************************************************************************
*****
It might be worth looking into pure shellac which dissolves in alcohol.
it is pretty durable and is easy to touch up. might also say it gives a
nice feeling to the wood as a natural finish...
Jeff Courtman
Director of Exhibit Development
Museumscapes
Office: 972.231.1002
Cell: 469.831.2256
[log in to unmask]
***********************************************************************
For information about the Association of Science-Technology Centers and
the Informal Science Education Network please visit www.astc.org.
Check out the latest case studies and reviews on ExhibitFiles at
www.exhibitfiles.org.
The ISEN-ASTC-L email list is powered by LISTSERVR software from L-Soft.
To learn more, visit
http://www.lsoft.com/LISTSERV-powered.html.
To remove your e-mail address from the ISEN-ASTC-L list, send the
message SIGNOFF ISEN-ASTC-L in the BODY of a message to
[log in to unmask]
***********************************************************************
For information about the Association of Science-Technology Centers and
the Informal Science Education Network please visit www.astc.org.
Check out the latest case studies and reviews on ExhibitFiles at
www.exhibitfiles.org.
The ISEN-ASTC-L email list is powered by LISTSERVR software from L-Soft.
To learn more, visit http://www.lsoft.com/LISTSERV-powered.html.
To remove your e-mail address from the ISEN-ASTC-L list, send the
message SIGNOFF ISEN-ASTC-L in the BODY of a message to
[log in to unmask]
***********************************************************************
For information about the Association of Science-Technology Centers and
the Informal Science Education Network please visit www.astc.org.
Check out the latest case studies and reviews on ExhibitFiles at
www.exhibitfiles.org.
The ISEN-ASTC-L email list is powered by LISTSERVR software from L-Soft.
To learn more, visit
http://www.lsoft.com/LISTSERV-powered.html.
To remove your e-mail address from the ISEN-ASTC-L list, send the
message SIGNOFF ISEN-ASTC-L in the BODY of a message to
[log in to unmask]
***********************************************************************
For information about the Association of Science-Technology Centers and the Informal Science Education Network please visit www.astc.org.
Check out the latest case studies and reviews on ExhibitFiles at www.exhibitfiles.org.
The ISEN-ASTC-L email list is powered by LISTSERVR software from L-Soft. To learn more, visit
http://www.lsoft.com/LISTSERV-powered.html.
To remove your e-mail address from the ISEN-ASTC-L list, send the
message SIGNOFF ISEN-ASTC-L in the BODY of a message to
[log in to unmask]
|
