Showing posts with label museum conservation. Show all posts
Showing posts with label museum conservation. Show all posts

Thursday, 30 June 2016

Collections Care: Boxing Clever

The Pitt Rivers Museum is currently in the process of packing over 100,000 objects in the reserve collections to move them to a new storage facility. Many of these objects have not been stored in suitable conditions during their lifetimes in the Museum. The project team are endeavouring to improve these conditions for the future. This work includes packing into chemically inert boxes, so either physical movement or pollutants do not damage the objects. To achieve this, large numbers of acid-free cardboard boxes in a range of standardised sizes are purchased from G. Ryder & Co. Ltd, based in Bletchley, Buckinghamshire. Founded in 1914, Ryder's specialise in hand-made boxes for museums and galleries. They also produce the boxes used to hold the scrolls given when receiving an honour from the Queen, hence holding a Royal Warrant since 1988.

In an effort to understand the box making process, and to discuss future requirements for the project, some of the OPS move team visited Ryder's on 26 May 2016.

OPS move team at Ryder's. From left to right: Andrew, Ashleigh, Meghan and Marina
Firstly, we were amazed at how small the premises were considering the quantity and size of boxes they produce for us, let alone all of their other customers. The second thing that stood out was how labour intensive the process is, with lots of people - each one working on one particular element of a box's production throughout the day.

Monique using the machine that creates the crease line in the card to enable folding
Tania using the machine that cuts slots in the card before the box can be folded

Janice using the machine that wire-stitches the boxes together at the end of the process

Each of these processes seemed quite manageable for the boxes they were working on that day. We realised their tasks would become infinitely more difficult with some of the large boxes we have ordered, which are over a metre long and nearly half a metre wide.

Another thing that our host, manager Rob Honour, explained was how many of the machines they are still using are upwards of 50-100 years old. This makes servicing and repairs a nightmare, with replacement parts needing to be specially made. It also limits the size of the flat sheet material that can be used to make a box. Considering these constraints, we are now working with Rob to design a box that is 1.5 metres long to be able to pack wooden clubs largely from the Pacific Islands. Rob is worried about a revolt from the ladies on the shop floor given how complicated this will be!

To see updates on how the team are using the boxes, and for news on the project, keep an eye on this blog or follow us on twitter

Heather Richardson
Head of Conservation

Wednesday, 25 May 2016

Museum Redisplay: Working on Watercraft

I am currently part of a team working on a new display of model boats. I feel privileged to be part of this creative process and thought you'd enjoy an insight into the display taking shape.

Conservators, Andrew and Jem, have examined each of the models, carrying out any necessary treatments before the boats go on display. Thanks to their patience and skill, I've often seen a dramatic transformation in the appearance of the models.

Below you can see two of the models Jem has recently researched so he could accurately position the sails.

Model reed boat, or balsa, like ones used on Lake Titicaca in Bolivia and Peru
PRM 1891.2.1 © Pitt Rivers Museum

Model skin-covered boat, or umiak, like ones used by Inuit people in Greenland
PRM 1884.81.40 © Pitt Rivers Museum

Keep an eye on this blog page and I will continue to share the display process with you.

When it is finished you will be able to see this display in the Court Gallery, on the ground floor of the Museum. The boat models will be housed in a brand new case, which has been possible thanks to the DCMS/ Wolfson Foundation's Museum and Galleries Improvement Fund.

Zena McGreevy
Senior Assistant Curator




Wednesday, 17 February 2016

Caring for the Collections: A Model Boat

I am currently working on upgrading the Museum's model displays on the ground floor (Court Gallery). I work closely with the Conservation Team, who check the condition of the objects, and carry out any necessary treatment before they go on display. I catalogue each object in detail, take photographs of each one, and write the new display labels.

During this process we discovered a beautifully made model of a rowing boat from Malta. The carved wooden hull has been neatly painted and the model includes painted oars, a painted metal lamp, a wooden bucket and baler, a metal anchor, and decorative silks drapes hung over the cabin area.

Detailed model of a Maltese rowing boat, PRM 1908.5.1 © Pitt Rivers Museum
Originally given to the Museum in 1908 the drapes are now faded and extremely fragile, the damage caused by past exposure to the UV rays in natural light . In addition the anchor, which the Conservators did a spot test on to identify the metal, is made of lead that is seriously corroded.

Close ups showing the faded and fragile silk drapes (left) and the corroded anchor (right) © Pitt Rivers Museum
As you can imagine staff in the Museum are extremely busy and Conservation would need to spend many hours to stabilise the silk on the boat before it could go on display.  Consequently we are going to house the rowing boat in a custom made storage box within the reserve collections.

Even if the decision is made not to include a model in the new display I still catalogue each one in detail. I add any information and photographs to the appropriate record on the object database. These form the basis for the online object database, which is regularly updated. This ensures you can access all the known information, plus see what the objects look like, on the Museum website.

Part of the cataloguing process involves clearly numbering each detachable part of the boat with the appropriate unique identification number. This enables each part to be described in detail and means even if they become separated - for whatever reason -  each part can be accurately identified and linked to the correct information.
The accession number written on
one of the oars © Pitt Rivers Museum


We number objects by applying a layer of reversible acrylic adhesive in solvent - often called paraloid - which looks like clear nail varnish. We then write the number using a rotring pen, before applying another layer of the acrylic adhesive.




As I have just catalogued and photographed the Maltese rowing boat this seemed an ideal opportunity to show you this particular model. Described as a daisa, in the information written down when this was given to the Museum, this appears to be a model of a traditional water taxi used to carry passengers and their baggage. To propel the boat a man stood facing forward pushing on the two oars, rather than sitting down to row.

One of the distinct features when you look at the boat is the height of the stem and the stern. The shape of these - as well as being decorative - provided a means of support for passengers to easily board and disembark.

Carved hull with high stem and stern © Pitt Rivers Museum
I hope you have enjoyed looking at and reading about this beautifully made model.

I will continue to keep you informed about the redisplay of the models with regular posts so keep following this blog.

Zena McGreevy
Senior Assistant Curator

Thursday, 20 August 2015

Caring for the Collections: Good Gourd!



The information found either written on an object or on a label attached
to the object allows us to track the object down on the database, assign it the
correct accession number,catalogue it and record its location making the object
more accessible for staff and researchers. © Pitt Rivers Museum

The wooden drawer units  © Pitt Rivers Museum
Box storage  © Pitt Rivers Museum

After having embarked and completed the rather large and daunting project of cataloguing and improving the storage of plant fibre clothing in the collections at our store we turned our attention to a more manageable project to see us through the summer. The Museum has a large collection of gourds kept in a less than useful wooden drawer system at the store. Gourds are particularly vulnerable to getting broken or damaged due to their delicate composition, odd shapes and sizes and varying thickness/thinness. And so, to this end, for the well being of the gourds the wooden drawer system is being replaced with conservation grade boxes and packaging.

The collections of the Pitt Rivers Museum and indeed ethnographic collections all over the world demonstrate imaginative use of the gourd. Gourds of all shapes and sizes are a natural resource across the globe and in societies today gourds are still being used as bowls, vessels, hats, musical instruments and for many other utilitarian purposes. Conservator Jeremy Uden and myself have been surprised by the variety of shapes, sizes and uses of the gourd and the varying thicknesses from eggshell thin to an inch or more thick. We are half way through the cataloguing and re-storage project and are getting an eye for identifying preferred decorative techniques from country to country. As well as gourds we are also working through vessels made from seed and nut including coconut vessels mostly from Oceania. Coconuts are readily available to Pacific Islanders and prove useful repositories for carrying and storing water and drinking water and kava from.



Above: gourds and coconut vessels in the process of being
catalogued and packed  © Pitt Rivers Museum

Gourd of the Lengua Indians; 1903.19.3  © Pitt Rivers Museum
Decorative techniques also vary greatly, with surfaces being incised with linear, figurative and geometric designs and decorated with burnt patterns known as pyro engraving. Coconut shells are inlaid with pearl shell and shell beads for aesthetic effects and white lime rubbed into incised designs to highlight the pattern. A particularly ingenious method of carving the lid so that it fits perfectly onto the gourd vessels is that of the Lengua Indians of the Paraguayan Chaco, South America. One end of the gourd is cut from the other with a zigzag line. Some of the coconuts and gourds have been decorated with perfect circular patterns created with a compass. We have more than one example of a coco de mer, or double coconut having been refashioned into a Hindu Sadhu's begging bowl with metal chain suspension for wearing around the neck. The value of the gourd as a utilitarian object is also emphasised by the local repairs found on some of them. Rather than make a new one, someone has taken the time to repair a damaged gourd already fashioned as a vessel. Later in the year the Museum will have a temporary display curated by our conservation department focusing on objects with local repairs 'Preserving What is Valued' including gourds. Some of these techniques and methods of using and decorating gourds can been seen on display in the Museum Court in the Geometric Form in Art case C.145.A and also in musical instruments particularly stringed lutes and zithers where the gourd forms the resonator part of the instrument.

Hindu Sadhu's begging bowl made from a double coconut;
1933.51.65   © Pitt Rivers Museum



Above, two gourd vessels which have local repairs where the
gourd has split and broken  © Pitt Rivers Museum


Above are coconut shells fashioned into water carrying vessels.
The top photograph shows how a plant fibre basketry frame has been
made to cradle the two coconuts and the one below has simply
been decorated with pearl shell; 1887.1.578 & 1933.38.27  © Pitt Rivers Museum

Above; gourds decorated with pyro-engraving technique, where burn marks
applied often with a poker have been used to make patterns and
decoration on the gourd; 1900.55.431 & 1934.8.102  © Pitt Rivers Museum

The two gourds above have been decorated with incised designs and
patterns and then rubbed with lime which is white and
acts highlight the design; 1935.56.15 & 1946.6.63 .2  © Pitt Rivers Museum


Faye Belsey
Assistant Curator



Wednesday, 1 July 2015

Temporary Exhibition: Preserving What is Valued - A World of Repairs - Part 2

One of two ceramics on loan from private collectors
demonstrating repairs made using the kintsugi technique
with lacquer and gold © Pitt Rivers Museum
Back in May we posted a blog about preparations for a temporary exhibition curated by the Conservation Department demonstrating original repairs made to objects when they were still in use. This is an update on the earlier blog now that the exhibition has just been installed into the display case on the Lower Gallery.

Despite the last minute addition of an excellent gourd, discovered by Jem and Faye while working to improve storage of the reserve collections, we managed to have everything ready for mount making on Monday 1st June as planned. We also borrowed from private collectors two ceramics demonstrating the kintsugi repair technique, the starting point for our exhibition plans.

Most labels were designed to include a detailed image of the repaired area on each object to help focus the visitor's attention on the part they should be looking at. We were keen however, to not put too much information on each label but leave it for visitors to think about  what significance the repair might have, after reading the introductory panel text.

Mock-up of the display once mounts were complete
© Pitt Rivers Museum
Display Technicians Chris Wilkinson and Alan Cooke had produced a scale mock-up of the final display case and were ready to go immediately. We were surprised to find that it took them about a week to complete the mock-up, which I think was also a relief to them given the complexities of working on the re-display of the Cook Voyages Collections, from which they were taking a therapeutic break.

At this stage the previous exhibition in the case was deinstalled, allowing Chris and Alan to prepare the case by filling and sanding holes and re-painting. It is important to do this a few weeks before the objects are installed to allow the paint to dry properly and any fumes from the paint to dissipate as they could cause adverse chemical reactions with the materials used on the objects. This is why you may see display case doors left open when you visit the Museum. At this stage they also painted and prepared the panels and plinth to be used in the display.

Chris and Alan mount the final copies
of labels and text © Pitt Rivers Museum


The next task before installation was to prepare the final labels and text. Katherine Clough, who has volunteered in the Conservation Department for a few years in many capacities, had accepted the challenge of producing a poster for the exhibition. The key element of the design uses several detailed images of the repairs fitted together to look like the world. We had added the strap-line 'A World of Repairs' to the exhibition title to be more explanatory on the poster. We used Katherine's 'world of repairs' motif in a semi-translucent way on the panel text to give it a bit of a lift and tie it into the poster.

On Thursday 25th June, a little ahead of schedule, Chris and Alan installed the objects in the case where they had already added the pre-painted panels earlier in the week. They started early to have the case closed and locked when the Museum opened at 10.00 a.m. On Friday 26th we adjusted the lighting in the case slightly to prevent too much light hitting the textiles, the materials in this display most prone to light damage.

Left: Installation of the objects, right: Alan and Chris take a moment to appreciate their labours © Pitt Rivers Museum
When we set out to produce the exhibition we were keen to write a gallery trail to enable visitors to see more repaired objects that are permanently on display. Having narrowed down the list, Andrew (with a little help from Madeleine) has produced a colour trail, which is available beside the display case. This again uses Katherine's 'world of repairs' motif on the cover. There are lots of trails available in the Museum but they are aimed at children and we wanted to see what interest there would be from adults. Hopefully the Gallery Assistants will be able to observe how many people use the trail over the coming months.

Cover of the Gallery Trail
linked to the exhibition
Finally, this is a good opportunity to mention some of the other tie-in events that will be coming up over the 6-month run of the exhibition. On the 18th and 19th September Tom van Deijnen will be running darning masterclasses in the Museum's annexe. Tom is best known for his visible mending program where a 'beautiful darn is worn as a badge of honour'. Follow this link to book a place on one of Tom's workshops.

In November traditional lacquerware artists Muneaki Shimode and Takahiko Sato from Kyoto will be artists in residence at the Museum for 10 days, demonstrating the kintsugi technique of repairing ceramics. The residency will include gallery demonstrations, an evening event and half-day practical workshops. There will be information on how to book a place on a workshop appearing on the the Museum website very soon - so keep watching this space.

Heather Richardson
Head of Conservation

Wednesday, 3 June 2015

Conservation of a 19th Century Tahitian 'Poncho'

As part of the final year of my MSc in Conservation for Museums and Archaeology at UCL, I am undertaking a five-month internship in the Conservation Department of the Pitt Rivers Museum. I have been lucky enough to spend some of my time here researching and conserving a fascinating object. Although it was "found unentered" (that is, found without an accession number or other identifying information) in the Museum store in 1984, more has since been discovered about the object's provenance. More recently, it came to the attention of Conservation staff, who blogged about it here - which is how it ended up as my internship project.

Based on analogies with objects at the Royal Economic Botany Collection at Kew Gardens (42977, 73328 and 73329) and at the British Museum (Oc1960,11.22, Oc1960,11.24 and Oc1960,11.25), the object can be identified as a traditional Tahitian poncho-like garment called a tiputa. It consists of a rectangular piece of barkcloth with a central opening to pass over the wearer's head. It is elaborately decorated with rosettes made of folded monocot leaf strips or stems and long fringes of extremely delicate plant leaf epidermis.

PRM 1984.3.1, front shown after conservation treatment © Pitt Rivers Museum

Given the lack of information about how the poncho came to be in the Pitt Rivers Museum collections, it is not implausible to suggest that - like the comparable objects from Kew and the British Museum - it may have been collected by Prince Alfred, Duke of Edinburgh, during a visit to Tahiti in 1869.

The Duke of Edinburgh is shown in this carte-de-visite photograph surrounded by Tahitian royal women in 1869 (image taken from the web page 'Ahoy - Mac's Web Log', where a now defunct commercial website 'oceania-ethnographica.com' is credited as the original source of the image). 

Prince Alfred's visit took place almost exactly a century after Captain Cook's first voyage, by which time there had already been extensive contact between Tahitians and Europeans. In fact, contemporary travellers' and missionaries' accounts describe islanders wearing a combination of barkcloth and Western woven textile clothing. It is interesting to note that by the mid-19th century, barkcloth production had probably ceased on Tahiti, so the material may have been imported from another Polynesian island. The highly decorated style of the poncho, moreover, does not fit in the traditional category of Tahitian high-status barkcloth, which was white and undecorated. All of this points to the poncho being the product of a period marked by dynamic, creative use of material culture to define colonial identities.

PRM 1984.3.1 as found in storage, before conservation treatment © Pitt Rivers Museum

From a conservation point of view, the poncho presented several problems, many of which resulted from inappropriate storage conditions in the past. The garment had been folded in half twice, and was then tightly packed into a wooden crate. This led to distortion and creases in the barkcloth material itself, as well as extensive damage and material loss to the fragile decorations. The decorative fringes which remained on the object were tangled, creased and damaged. The object was also rather dirty.

Bag of detached fragments. PRM 1984.3.1 © Pitt Rivers Museum
Thick covering of dirt on one of the rosettes. PRM 1984.3.1 © Pitt Rivers Museum

Tangled, creased and damaged edge fringes. PRM 1984.3.1 © Pitt Rivers Museum

Besides providing an opportunity to revisit some research into the poncho's cultural and historical significance, the main aim of the conservation treatment was to improve the structural stability of the poncho, while also improving its visual appearance. I used a Preservation Pencil to humidify the fringes one by one, straightened and untangled them, and repaired damaged areas with small patches of Japanese tissue paper adhered with starch paste. I cleaned the rosettes with a fine brush and vacuum tweezers and then misted them with a consolidant coating to strengthen the material. Finally, integral to the conservation treatment was devising a more appropriate storage solution, which would allow the object to be stored more comfortably and accessed more safely and conveniently in the future.

Humidifying and straightening the edge fringes, in progress. PRM 1984.3.1 © Pitt Rivers Museum

The scale of a conservation project like this cannot be underestimated. I spent 110 hours in total on the treatment and used around £78 worth of archival-grade materials (corrugated polypropylene board, Plastazote foam, cotton calico and polyester wadding) for the repacking. The volume of the new storage box is approximately 540 litres - nearly eight times the volume of the old crate. This clearly has implications for space availability inside the Museum store, an increasingly precious resource.

PRM 1984.3.1 in its new storage box, with the old crate pictured alongside © Pitt Rivers Museum
Finally, the treatment has provided me with an opportunity to collect already detached samples of the various plant materials present, with a view to carrying out more detailed identification using scanning electron microscopy and Fourier transform infrared spectroscopy at UCL's Institute of Archaeology. This analysis will be done over the next few months and I hope to be able to share the results in a follow-up blog post then.

Naomi Bergmans
Conservation Student

Wednesday, 20 May 2015

Temporary Exhibition: 'Preserving What is Valued'

Three arm ornaments from Africa with different methods of original repair
 © Pitt Rivers Museum
The Conservation Team are currently preparing a small temporary exhibition for a display case in the Museum's Lower Gallery showing objects that have been repaired by their original owners.

Given the nature of our work we study objects in great detail and part of our role is often to determine at what stage a repair to an object has been made. Has the repair been made while the object was still in use in the originating community, or by the original collector, or has it been repaired in the Museum?

When we find examples of repairs from originating communities we feel it gives the object a deeper resonance and is something we strive to preserve. Why was this object repaired by its original owners rather than replaced? Is it a fine example of craftsmanship or is it a sacred object? Were the materials it is made from scarce or expensive? These are just some of the questions we aim to explore in the exhibition.

We decided on the idea last summer when two of us attended the opening of an exhibition at the Japanese Embassy in London called 'Gold: All that Glisters - Japanese Gold Decoration.' One aspect of this exhibition focused on kintsugi, the Japanese method of repairing damaged or broken ceramics using urushi lacquer and, most commonly, gold powder. From early times, imperfection has been the subject of aesthetic appreciation in Japan, particularly with regard to the repair of valued items that have suffered in the course of their daily use. This idea of celebrating imperfection chimed with our attitude in Conservation and the repairs we had seen on objects from all parts of the world. We also felt that the theme of the exhibition fitted in well with the current Need, Make, Use Project, which has a focus on crafts skills and technology.

It isn't every day that Conservators have the opportunity to curate an exhibition based on their own idea and we started out by submitting an exhibition proposal to various museum committees for approval. We borrowed the working title 'Preserving What is Valued' from a book published by Canadian conservator Miriam Clavir (with her permission) and it seems to have stuck.

Having received the thumbs up, we then had to work around the schedule for the display case in the Lower Gallery used for temporary exhibitions. A gap was found for late June 2015 until January 2016, which we snapped up. At this point we also started to progress plans in collaboration with the Need, Make, Use Team for some tie-in events over the period of the exhibition. In the autumn we sent an email to all Collections staff to keep a look out for suitable objects.

We are fortunate that the Museum object database contains a search term 'repaired (local)', which refers to a repair made to the object by the originating community.

Database page showing the search term 'repaired (local)'
The term is either added to the record when the object is catalogued by the Collections Team or by Conservators when they work on the object.

Searching by this term initially produced approximately 500 records. We decided to only select object that were in storage, with the aim of producing a Museum Trail to guide visitors around some of the repaired objects on permanent display.

At this stage we were able to export the database information into a spread sheet.

Part of the working spread sheet
This enabled us to work through the list, physically finding and examining the objects to narrow the selection down further. It also made it easier to see if we had a good geographic spread.

We were down to 35 objects when we prepared a test layout. In the Conservation Lab we marked up a group of tables to the dimension of the display case and experimented with groupings. When working on the layout we considered how objects would need to be mounted in the display and how time-consuming it could be. As we work closely with the Museum Display Technicians, we are fully aware of their busy schedule and needed to make the display as uncomplicated as possible.

Test layout for the display in the Conservation Lab
Following the layout we are now down to 31 objects and have discussed the mounting requirements with Chris and Alan, who  will be working on the display. As we do not currently have any examples of kintsugi ceramics in the collection we have arranged to borrow one or two examples from a local private collector.

The selected Museum objects are now in the Conservation Lab being assessed, photographed, some mounts made and the text prepared. This stage will be completed by the end of May ready for the objects to be passed on to Chris and Alan to begin work on a mock-up of the display from the 1st June. All being well the exhibition 'Preserving What is Valued' will be installed by the 29th June. Please look out for the exhibition and the range of tie-in events we hope to have over autumn 2015.

Heather Richardson
Head of Conservation

Wednesday, 12 November 2014

New Displays: Forthcoming Maori Carving Case

Before conservation treatment showing
the old mount (left) and after treatment
(right), canoe ornament PRM 1902.80.2
© Pitt Rivers Museum
Members of staff from the Collections, Conservation, and Technical Services Departments are continuing to work together preparing a new display dedicated to the art of Maori wood carving

Work is progressing well. 

Conservation have finished checking over all of the carvings selected for display. This necessary and important work has involved stabilising any damage on the carvings, cleaning where required, and if necessary removing old mounts. 

Technicians are currently busy creating a mock-up of the display to finalise the design and make all the necessary display mounts.

The case mock-up in the design area © Pitt Rivers Museum

The designated display case has been emptied and is now ready for Technicians to panel out and paint. After painting the case will need to be left for about three weeks. This will allow any volatile organic compounds in the paint to off-gas so no harm is caused to the objects going on display.

I have been busy finding out about Maori wood carving and researching the objects. I am currently drafting the introductory text and individual object labels. I intend to circulate these to members of the Maori community, as well as subject specialists, to ensure the text in the display is accurate and informative. 

Heather, Head of Conservation
emptying the case ready for the
new display © Pitt Rivers Museum

Keep an eye on this blog site and I will let you know when the display is finished.
I am making sure any new information about the carvings is added to the appropriate records. Plus we are taking, and adding, up-to-date images of these carvings.

This will ensure, even if it is difficult to visit, you will still be able to see and read all about these carvings on the Museum website using the online object database.

Zena McGreevy
Senior Assistant Curator