dk nkf - Nordisk Konservatorforbund Danmark

Fig. 4 Some bicycles in use and in storage have not always
been properly taken care of. This one had to be conserved
and exhibited among others in the Museum’s new display of
industrial heritage. It was only treated to withstand a controlled
room temperature situation.
Fig. 6A For a quick outdoor comparison, a standard steel
test plate was sandblasted on one side and coated with three
different build-ups of three layers of paint each as explained
above. On the lower right corner, a clear coating was spead
that we yet have little experience with. Here it was applied
with a too narrow brush that made the surface uneven. Two
horizontal scratched lines through the coat layers are made on
each test area. The panel curves slightly because of the onesided
sandblasting.
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Fig. 5 Galvanized steel will also eventually start rusting in
use and/or later exhibition in the Open Air Museum’s houses.
Here the low bucket parts have been damp and its steel band is
rusting. Both conservation and preventive conservation (lifting
it slightly) were needed for future preservation.
Fig. 6B This picture shows the test panel after exposure outdoors
(hanging on a cloths-line near Brede) in the cold snow and rain
from Jan. 16 th to Feb. 25 th 2009. On the thickest parts of the
clear coating, as well as in its scratches, pitting-corrosion is
starting causing the coating to look brown. (Be aware that this
coating as mentioned was uneven and look instead at the big
comparative tests when ready.) (Small, light paint smudges
reveal that the panel’s backside was painted after the front.)
Untreated edges of the panel are also corroding. This continuing
outdoor test will be presented at the conference in May 2009.