What Are the Symptoms and Causes for Mechanical Damage to Multi-Layered Scrolls and What Can Be Done to Prevent and Treat Them?
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What are the symptoms and causes for mechanical damage to multi-layered scrolls and what can be done to prevent and treat them? MA Conservation and Restoration Programme Book and Paper Specialisation Master’s Thesis * What are the symptoms and causes for mechanical damage to multi-layered scrolls and what can be done to prevent and treat them? Adam Macklin 11353899 Supervisor: Elizabet Nijhoff Asser (UvA) RCE contact: Bill Wei (RCE) June 2018 Adam Macklin, UvA, 2018 1 What are the symptoms and causes for mechanical damage to multi-layered scrolls and what can be done to prevent and treat them? Table of Contents Abstract 4 Abstract in English 4 Abstract in het Nederlands 5 1. Introduction 6 2. Context and Literature Review 8 2.1 Scrolls 8 2.2 Mechanical forces of scrolls 12 2.3 Materials 15 - Paper 15 - Parchment 16 - Silk 16 2.4 Cultural context of scrolls 16 2.5 Mechanical damage symptoms suffered by scrolls 19 2.6 Conservation treatments for mechanical damage 21 3. Method 25 3.1 Terminology 25 3.2 Mechanical Damage Terms 30 3. 3 Survey Method 34 Introduction 34 Motivation 34 Selection of scrolls 34 Survey methods 35 3.4 Models Method 36 Introduction 36 Motivation 36 Selection of materials and styles 36 Method of making the models 37 4. Results 39 4.1 Survey results 39 Folds 40 Planar Distortion 43 Parallel tears 45 Edge damage 47 Model results 49 5. Discussion 51 5.1 Folds 51 5.2 Planar distortion 56 5.3 Planar tears 57 5.4 Edge damage 59 5.5 Esther scroll 61 Adam Macklin, UvA, 2018 2 What are the symptoms and causes for mechanical damage to multi-layered scrolls and what can be done to prevent and treat them? 6. Conclusion 65 Acknowledgements 66 Annotated Bibliography 67 Appendices 70 1. Glossary of terms & mechanical terms 70 2. Database of survey 73 3. Reference for the survey 82 All figures or photos used herein are drawn or taken by Adam Macklin, if not referenced. *Cover Photo; detail of Gods of Longevity with Attendants, CBLC1222 © The Trustees of the Chester Beatty Library, Dublin. Adam Macklin, UvA, 2018 3 What are the symptoms and causes for mechanical damage to multi-layered scrolls and what can be done to prevent and treat them? Abstract This thesis for the Masters in Conservation and Restoration in the Book and Paper specialization will investigate the symptoms and causes of mechanical damage in multi- layered scrolls. Through the analysis of an international survey of scrolls and the building of models, this research will not only further our understanding of the structure of scrolls but also provide guidelines for handling, storing and displaying scrolls. The prime motivation for this study was an Esther scroll in the collection of the Jewish Historical Museum. This scroll is made from parchment and sewn to a silk backing. The parchment has been cut into to, leaving pictorial depictions of the story of Esther in the parchment. On permanent display, it shows mechanical damage including folds, planar distortion and edge damage. Despite its unique structure, as a multi-layered scroll it presents the same symptoms of mechanical damage that is present in Chinese and Japanese paper and silk scrolls. The current literature on scroll damage and treatments frame this study. Most of the literature focuses on Far Eastern scrolls. Despite this and the fact that materials used vary, the same mechanical forces are present in all multilayered scrolls. The research this survey carried out was primarily in the form of a survey. The collections in Dublin’s Chester Beatty Library and Amsterdam’s Jewish Historical Museum provided a wealth of information on the symptoms of mechanical damage. The study focused on different directional folds and creases, planar distortion, tears and edge damage. The causes of these types of damage can be traced back to the display, storage and handling of scrolls. The making of models was also used to understand the construction and how the chosen materials immediately reacted when rolled up into a scroll. The results from this study provide guidance for all scroll collections on the symptoms and causes of mechanical damage along with ways of preventing and treating the scrolls. By understanding the severity and location of certain types of mechanical damage it is possible to chart the origins of it. When understood, this mechanical damage can be treated or prevented. It will be shown that some mechanical damage may be inevitable due to the very nature of scrolls’ physical structure. Other symptoms can be reduced through considered care. This study will provide a point of reference for custodians of collections, whether conservators or curators, on the display, storage and handling of multi-layered scrolls. Adam Macklin, UvA, 2018 4 What are the symptoms and causes for mechanical damage to multi-layered scrolls and what can be done to prevent and treat them? Abstract Deze scriptie voor de Master onderzoekt de symptomen en oorzaken van mechanische schade in meerlagige boekrollen. Door de analyse van een internationaal overzicht van rollen en het bouwen van modellen, zal dit onderzoek niet alleen ons begrip van de structuur van de rollen verbeteren, maar ook richtlijnen bieden voor het hanteren, bewaren en weergeven van rollen. De voornaamste reden voor deze studie was een Esther-boekrol in de collectie van het Joods Historisch Museum. Deze ‘scroll’ is gemaakt van perkament en genaaid op een zijden ondergrond. In het perkament is het verhaal van Esther in afbeeldingen uitgesneden. Door het permanent tentoonstellen vertoont de rol mechanische schade, waaronder plooien, vlakke vervorming en beschadiging aan de randen. Ondanks zijn unieke structuur vertoont deze meerlagige rol dezelfde symptomen van mechanische schade die aanwezig is in Chinese en Japanse rollen van papier en zijde. De huidige literatuur over schade en behandelingen van rollen geven de grenzen van deze studie aan. Het grootste deel van de literatuur concentreert zich op rollen uit het Verre Oosten. Ondanks dit en het feit dat de gebruikte materialen variëren, zijn dezelfde mechanische krachten aanwezig in alle meerlagige rollen. Het onderzoek dat is uitgevoerd vond voornamelijk plaats in de vorm van een enquête. De collecties in de Chester Beatty Library in Dublin en het Joods Historisch Museum in Amsterdam leverden een schat aan informatie over de symptomen van mechanische schade. De studie richtte zich op verschillende directionele plooien en vouwen, planaire vervorming, scheuren en randbeschadiging. De oorzaken van dit soort schade zijn terug te voeren op het tentoonstellen, opslaan en hanteren van rollen. Het maken van modellen werd ook gebruikt om de constructie te begrijpen en hoe de gekozen materialen onmiddellijk reageerden toen ze in een rol werden opgerold. De resultaten van deze studie bieden richtlijnen voor alle rol-verzamelingen over de symptomen en oorzaken van mechanische schade, samen met manieren om schade te voorkomen en te behandelen. Door de ernst en locatie van bepaalde soorten mechanische schade te begrijpen, is het mogelijk om de oorsprong ervan in kaart te brengen. Wanneer begrepen, kan deze mechanische schade worden behandeld of voorkomen. Er zal worden aangetoond dat enige mechanische schade onvermijdelijk kan zijn vanwege de aard van de fysieke structuur van de rollen. Andere symptomen kunnen worden verminderd door zorgvuldig hanteren. Deze studie biedt een referentiepunt voor bewaarders van collecties, conservators of curatoren, voor het tentoonstellen, opslaan en hanteren van meerlagige rollen. Adam Macklin, UvA, 2018 5 What are the symptoms and causes for mechanical damage to multi-layered scrolls and what can be done to prevent and treat them? 1 Introduction This thesis will explore the symptoms and causes of mechanical damage to multi-layered scrolls and examine treatment and prevention methods. By focusing on mechanical damage this work will not investigate chemical or biological deterioration. Rather, the focus will be on damage from handling, storing and displaying scrolls. The research has focused on multi-layered scrolls rather than single layered substrates that have been rolled up. The aim is to investigate the relationship between the artwork and its mounts. There are inherent issues with multi-layered scrolls’ structure. There are also problems resulting from handling, storing and exhibiting multi-layered scrolls. Scrolls can be stored in ways that neglect its condition or ways that aim to prolong its life. Displaying culturally important scrolls is unavoidable. The system and durations of this display can have a physical effect on the object. Terminology is an important facet for this thesis. Glossaries of terms have been provided in the Appendices to aid the reader. Where required, terms will be explained in more detail in the text. Figure 1.1 A section of the Esther scroll M000433 at the Jewish Historical Museum, photo courtesy of the JHM. The motivation for this thesis is to expand our knowledge of scrolls. The Esther scroll at the Jewish Historical Museum in Amsterdam, see figure 1.1, exhibits severe mechanical damage. It is a central piece for the museum and has been on display for over 20 years. It exhibits strong planar distortion making it hard to display and read. Its condition is not Adam Macklin, UvA, 2018 6 What are the symptoms and causes for mechanical damage to multi-layered scrolls and what can be done to prevent and treat them? fully understood which makes any treatment complicated. For conservators to prolong the life of such an important object more research must be carried out on the mechanics of scrolls. Conservation has opened up greatly to science and uses chemistry and biology readily. However, mechanics is less understood by conservators. This thesis aims to advance the process of inculcating mechanics into book and paper conservation 1.