For optimum cleaning, dirt was extracted from the deep structure by means of dry cleaning using a goat-hair brush, gentle compressed air and a museum vacuum cleaner to eliminate the grey bloom and improve the colour effect.
An extended series of tests were carried out on dummies, experimenting with a range of binding agents and fillers in various ratios and using various methods of application. A mixture of cellulose fillers and methyl cellulose as a binding agent proved ideal for stabilizing and closing cracks and areas of loss.
The putty compound was precisely applied using a micro dispenser and fine needle attachments, and the surrounding area was structured accordingly. For deeper loss areas and larger cracks, inlays made of foamed methyl cellulose were first cut to size and inserted before being filled and then retouched.
Restorers: Stefanie Bründler / Kerstin Mürer / Sandra Weber
Project period: October 2018–May 2019