On Oct 8, 12:13 pm, Flemming Frederiksen <n...@faftech.dk> wrote:
> Den Sat, 08 Sep 2007 14:56:47 +0000 skrev P.C.:
>
>
>
> > Hej.
>
> > For en del år siden kendte jeg en der resturerede malerier, hun
> > fortalte om "rense dej" der er en simpel franskbrøds dej, uden gær
> > eller natron som man bagte i en almindelig ovn og som bruges af
> > profesionelle, idet dejen når den er op bagt ,er tilpas klæbrig og
> > uden olier eller fedtstoffer , til at bruge til ar rense olie
> > malerier.
>
> > Efter dejen er bagt i en ovn, ruller man den til "pølser" og ruller
> > disse hen over maleriet og snavs samt skidt bliver så "trukket" af på
> > en meget nænsom måde, foruden at dejen altså ikke smitter af på
> > lærredet ---- man skal naturligvis støtte lærredet nedefra, men
> > resultatet skulle være perfekt . Jeg mener bestemt også at have set
> > metoden på fjernsynet men det er mange år siden ; kender nogle her
> > fremgangsmåden , Dej blandingen ovn temperaturen osv ?
>
> Hej
>
> Efter en hurtig søgning, fandt jeg dette:
>
> Kopieret herfra:
http://sul-server-2.stanford.edu/byform/mailing-lists/cdl/1998/1407.html
>
> -----------------------------------------------------------------
>
> Barbara Cerrina <n...@digicolor.net> writes:
> >We need to clean a ceiling painted with tempera that is actually
> >covered with a thick lay of soot.
>
> You might be limited to dry cleaning methods to remove your soot. I
> can give you a recipe for a cleaning putty we use in Denmark to
> clean dirt off wall paintings that do not tolerate water.
>
> Danish Cleaning Dough:
>
> 700 ml water
> 65 g (50 ml) copper sulphate
> 20 g (40 ml) sodium carbonate
> 780 - 850 g plain white flour (the putty is stickier with less
> flour)
>
> Preheat oven to 175 C (about 330 F). Place copper sulphate in a
> bowl. Boil the water and pour over the copper sulphate. Mix
> well. Add the sodium carbonate (this will cause it to bubble
> up). Mix well. Mix in flour. Turn out on flat surface and knead
> for about 5 min. If you have experience with making bread, this
> dough is stickier than bread dough. It is also blue. Form the
> dough into a loaf. Wrap it in a layer of wet cotton gauze. Wrap
> it again in a layer of aluminium foil. Repeat this two more
> times. This will keep the putty from drying out while baking.
> Place in oven. Bake for 90 min. Put it into a plastic bag
> immediately after it cools down. It is best when used fresh. If
> you do not use it within a few days, slice it up into pieces,
> wrap them individually and freeze them.
>
> To use the putty, you pull off a hunk and roll it between your
> fingers (make a snake), then roll it across the dirty surface. You
> can also try dabbing gently. In cases where the dirt is really thick
> we often vacuum the surface gently before we proceed with the
> cleaning dough. That way it will not get clogged up with dirt
> immediately.
>
> For more robust paintings that can not tolerate water we use a
> dry-cleaning sponge that works like an eraser produced by WISHAB. We
> buy ours in Germany at Kremer Pigmente <kremer-pigme...@t-online.de>
> Good luck,
>
> Isabelle Brajer
> Conservator
> National Museum of Denmark
> Conservation Department
Tak !