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MIKHAIL  OVCHINNIKOV
ART  CONSERVATION
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OLD MASTERS
OUTDOOR   SCULPTURE
t                   Two Sphinxes in Golden Gate Park   de Young Museum
The  Hunter     
COPPER   ELECTROPLATED  CAST IRON
PAINTED  CAST,  CEMENT
THE SCULPTURE OF KING CARLOS III IN SAN FRANCISCO
SCULPTURE BEFORE  TREATMENT
BEFORE TREATMENT: FRAGMENTS OF PHOTOGRAPHS SHOWS CORROSION  OXIDIZED CAST IRON  THAT GOES THROUGH  
ELECTROPLATED COPPER ON TOP OF IT
DECOMPOSITION OF PREVIOUSLY RESTORED AREAS
BEFORE TREATMENT: DETERIORATION PLATING MANY AREAS OF SCULPTURE SHOWS THAT OXIDATION OF IRON EAT AWAY  
PLATED COPPER ON TOP OF IT .
IN PROCESS: SHOWN TESTS ON CLEANING SURFACE OF OXIDIZED   COPPER  AND IRON, ALSO  REMOVAL  DETERIORATE  
PEACES   OF PREVIOUS  RESTORATION
SCULPTURE IN PROCESS  OF  TREATMENT: CHEMICALLY AND
MECHANICALLY  REMOVAL  ALL  DETERIORATIONS
INSERT MULTIPLE STEEL RODS TO SUPPORT structural integrity
OF THE SCULPTURE RECONSTRUCTION OF MISSING ARES
CONDITION OF BASE BEFORE TREATMENT
AFTER TREATMENT: LIKE YOU CAN SEE  IT WAS
NOT EASY TASK. YOU CAN NOT WELD AGED CASTS
IRON BECAUSE DIFFERENTIAL OF TEMPERATURE
WITHOUT PREHEATING CAN DAMAGE IRON  IN
DIFFERENT PLACES . SO WE HAVE TO FIND OUT A
WAY TO AVOID CRUMBLING MATERIALS AND
STRUCTURALLY SUPPORT WEIGHT OF THE
SCULPTURE.  AFTER SUCCESSFUL TESTING
SCULPTURE WAS CLEANED FROM OXIDATION AND
DETERIORATION  OF OXIDES . A SURFACE WAS
REPATINATED, DAMAGED ARES  OF PLATED
COPPER WERE COMPENSATED AND FINALLY
SEALED.
CONDITION BEFORE TREATMENT: SCULPTURES WERE  REMOVED FROM PEDESTALS AND NEGLECTED FOR SEVERAL
YEARS.
ALL NEXT PICTURES  PRESENT WORK AFTER TREATMENT
SHOWN SCULPTURE AFTER INSTALLATION  BUT BEFORE TREATMENT
FRAGMENT OF SPHINX THAT SHOWS CONDITION PRIOR
TREATMENT
I AM WORKING ON A PROJECT: REMOVAL MULTIPLE LAYERS OF OVER PAINTS.
A  DETAIL SHOW RECONSTRUCTION MISSING PART OF NOSE ON ONE OF THE SCULPTURES
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