Tag Archives: corrugated clamshell

Learning the Basics

Hi! I’m Nicole, and I’m the newest member of the Preservation Lab.

Nicole Browning makes a corrugated clamshell enclosures

When I was interviewing for the position of Conservation Assistant, I did a deep dive into what preservation and conservation really mean. I read through blog posts and perused the Lab’s Instagram, trying to get a grasp on what exactly the lab did. Little did I know, these snapshots into lab life hardly even scratched the surface.

Materials and Tools

My first week as a Conservation Assistant was full of learning, from what types of boards and paper supplies are available, to how to create a pamphlet binder and sew music scores. I had no idea there were so many types of paper out there, and I was ignorant about how many tools there exist simply to cut these pieces of paper. My hand skills were immediately put to the test with learning the stitches used to attach pamphlets to protective premade binders, which create a hard cover for these otherwise soft materials. I was also instructed in which methods of cutting are best for which practices and types of paper, such as board shears for larger pieces of Bristol or corrugated board, scalpels and Olfas for small, precision cutting, and even a corner cutter to clean up the corners of your pamphlet binders!

A music score lays on a bench with a needle and thread used for conservation sewing. — *Sewing parts of a music score with a needle and thread.*

Enclosures

Over the next few weeks, I was thrust into a whole new world of enclosures after learning about pamphlet binders and music scores. Enclosures are typically boxes that are used to keep a book or object safe from light, dust, and other environmental factors that can harm the item over time.

Tuxedo boxes

Creating tuxedo boxes was an exciting and fun challenge, as getting all the measurements right and being precise is so important. These boxes take a lot of focus to make, and attaching the two pieces of board can be daunting, as you must make sure not to overlap the folds and ruin the whole box.

View of a tuxedo box opened next to the book it will house.

A finished tuxedo box on the left, and the two pieces of an unfinished tuxedo box opened to show the full spread of the box on the right.

Corrugated Clamshells

Corrugated clamshell boxes came next, with their in depth measuring and precision crimping and cutting. Like a tuxedo box, these boxes offer better storage from light and dust, and are a more structured enclosure. Where they differ, though, is they are made from corrugated board rather than Bristol board, and this offers more support to items that need a little boost of structural help. These boxes are made from one piece of board that is cut and folded into a clam-like box that opens on one end and is attached at the spine.

A flat corrugated blue board that has been cut and pre-folded, ready to form into a box. — *A corrugated clamshell during the construction process. This clamshell still needs it’s ends glued in to create it’s box shape.*

General Collections Treatment

My final big learning project was cloth tape removal, which was something completely different, making it very enjoyable to learn. Cloth tape removal is taking off old adhesive tape that has been applied to materials that is now falling apart. To remove cloth tape, a poultice of methyl cellulose is applied in thirds to the tape. Introducing moisture to the adhesive allows you to slowly and carefully use a Casselli microspatula to loosen and remove the tape, leaving behind only the original materials.

An old pamphlet that’s been bound together with cloth tape in the middle of the removal process. Weights hold down pieces of Mylar to keep the pamphlet cover from absorbing any of the poultice. The cloth tape is the grey strip on the right of the pamphlet, and you can see where some of the tape has been removed and what still needs to be done.

Final Impressions

I’ve learned so much over my first month at the lab, but so far corrugated clamshells have been my favorite. It’s been so fun to grow my hand skills and to see how much of a difference one month can make, and I’m so excited to expand my horizons and learn more about the lab in the upcoming months!

Nicole Browning, Conservation Assistant [CHPL]

Enclosures and the Kyle Insert

Last month, I showed you how to make a corrugated clamshell. At that time, I mentioned some alternative strategies for special situations, such as considerations of working space, collection size, etc. Pre-made boxes may be the way to go here. They’re generally non-adhesive, and excellent if you have a large collection that needs help, but can’t be worked on right away, for pieces going to off-site storage, or if you’re in a situation where box building space is at a premium, such as many of our work from home setups (I’m currently working at my kitchen table, which is definitely a squeeze sometimes!)

There are multiple ways to obtain pre-made enclosures:

Many commercial binderies offer custom economy boxing. Our Lab uses HF Group (http://www.hfgroup.com/) when needed. Their work is excellent, and their enclosures can be created from sent measurements. This is wonderful for housing items in our collection that require storage, but we feel are too fragile to be shipped.
Most major conservation suppliers, such as Talas (https://www.talasonline.com/) and Gaylord (https://www.gaylord.com/c/Conservation-Supplies) offer archival boxes in common sizes.

A pre-made enclosure can also be a great option for very small items, to keep them from becoming lost on the shelf.

Under normal circumstances, a box created in the Lab for a small piece would be lined with foam to keep it from moving around in the larger cavity, but when the pandemic hit, we thought it might be a good idea to find ways to do this that didn’t require foam, which might be expensive or difficult to source or store.

Enter the Kyle Insert. Developed by Kyle Olmon, it is an answer to the ongoing question of new ways to store smaller items that will keep them safe and prevent them from getting lost. It works well for things like artist books, which are often incredibly small. It’s also a time saver in lieu of foams. I don’t know about you, but cutting foam is not my favorite thing. An alternative is always welcome when it is appropriate, and we (and the books!) can always benefit from having multiple ways to solve problems.

Written instructions from Kyle Olmon are available on-line at https://kyleolmon.files.wordpress.com/2016/05/kyle_insert_v2_instructions.pdf . I found that the insert made more sense to me when I had a visual representation. It’s a surprisingly simple structure but may not seem that way on paper. In light of that, I did something a little different and put together a video of my assembly efforts, interspersed with instructions and diagrams from Kyle Olmon throughout. Hopefully the video combined with Mr. Olmon’s excellent instructions will help you get started with this form!

An enclosure with the Kyle Insert. The insert is a sling like structure that secures a small tux box. The image is clickable leading to a video documenting the creation of the insert. — **CLICK on the image above to open the video, and push play.** The video will open in a new tab and may take a minute to load. Link – https://mailuc-my.sharepoint.com/:v:/g/personal/prochah_ucmail_uc_edu/Ec3zHrG3NClHlvMsKDruYyMBTzj-3YmnJeex1-elL98XVw?e=hM1ozt

Hyacinth Tucker (UCL) — Bindery and Conservation Technician

Enclosures and the corrugated clamshell

closed completed enclosure, gray 3mm corrugated board — Completed corrugated clamshell.

Tuxedo boxes are fantastic, accessible enclosures. Sadly, they do have their limitations, as anything does. If you’re working with a piece that is a larger or heavier (or both!), a piece that is a bit more delicate and in need of more protection, or a piece that isn’t all in one piece, you may want to look at a corrugated clamshell.

The corrugated clamshell is a slightly more complex, yet infinitely versatile addition to a good basic preservation enclosure arsenal. Developed by Andrea Krupp in 1988, it’s great for pieces that are awaiting treatment but need stabilization in the meantime. It also works beautifully for boxing sets of items that don’t quite merit the time commitment that a cloth-covered clamshell might. I have also found a corrugated clamshell to be perfect for things like experimental music scores (which may include cards, CDs, or any number of other unexpected items) that need to be shelf-ready in a hurry.

So let’s make one. The material list for this is actually surprisingly small:

A cutting implement, such as a scalpel or X-acto or Olfa knife
At least one ruler. I generally use two – a meter rule for laying down lines, and a 12-inch rule for most cuts.
A bone folder. This should have at least one end that is fully rounded. You don’t want to push through your board!
PVA; archival quality, of course. While there are a few ways to make a non-adhesive box that I won’t get into with this entry, the method we use here in the Lab does require it.
A way to secure the adhered portions of the box. In the Lab, this would be done with large bulldog or binders clips with board scraps to prevent marring, but if you’re at home without something like those, some strategically-placed weights will do nicely.
And of course, your corrugated board. Again, archival quality. For most projects, we use B flute (3mm thickness), but we do use E flute (1.6mm thickness) as well. E flute is used for my example photographs, throughout the entry.

In the Lab, planning for our corrugated boxes begins with an Excel spreadsheet. Brought to us by Ashleigh via UCLA, this greatly shortens our box making time by automating the measurements needed for each project. With just the height, width, and thickness of your piece, the sheet maps out every measurement you need for a snug, custom enclosure. As you can imagine, in a production lab like ours, this is a huge boon. I highly recommend it, and I would be happy to send it to you! (Feel free to email me any time at hyacinth.tucker@uc.edu or check out this link to past OPC workshop handouts!)

Excel spreadsheet over cut corrugated board on a cutting mat. — E flute spreadsheet, prepped and ready!

E flute board marked with score and cut lines. — Corrugated board, ready for cutting and scoring.

Once we have our measurements secured, it’s time to cut our board down to size and lay down our guide-lines. Two things to remember: 1) be sure to make all your markings on the side of the board with visible corrugated lines, this way the guide-lines and the less aesthetically pleasing side of the box are on the inside of the enclosure (with the exception of fragile items that might rub against the corrugation such as red rotted leather); and 2) do your best to orient the grain in the proper direction. When the box is finished, the visible corrugated lines should run in the same direction as the spine of the book. The overall board sizing can be done with your larger ruler, rather than a board shear or oversized paper cutter, if you’re very careful. That same ruler can then be used to measure out the cutting and scoring lines.

Ruler and e flute board with markings of where to cut for box walls and flaps. — Work in progress, a closeup of a flap cut.

Next, let’s make our box cuts. If you have one, the smaller ruler is great here. Again, the spreadsheet makes this part simple. Cut on the solid lines, score and fold on the dashed lines. One thing that the sheet doesn’t mention is that the inner corners of each box wall need to be cut. Not much; you don’t want to expose your materials to the elements. Just a little corner to keep them from catching on each other when you close your completed box.

Corrugated board with cuts and folds complete. — Almost done!

Now that all of the cuts are done, we move on to the scoring and creasing. In the Lab, all of the creasing across the width of the box is done with a large crimper, and the lengthwise work is done by hand. Fortunately, if you don’t have access to a crimper, it’s pretty easy to score with one of your rulers and the rounded bone folder. Just take your time, and don’t press too hard; you don’t want to break through the board.

Weight nestled against enclosure wall to assist with adhesion of adhesive during drying. — In the absence of bulldog clips, properly placed weights
can help hold everything together while the adhesive dries.

Next, let’s pull it all together. First, fold up the sides of your box, to define your inner trays. If you are using 3mm board, this is a great time to use your bone folder to flatten the flaps, in order to prevent bulk when pasted down. Next, tuck the flaps into the fold over portions at each end. This is where the PVA comes in. Put it on the flaps and the interior of the fold-overs. Be generous, but not too generous; we don’t want it to gush out when we make the folds. Secure the fold-overs with the clips/weights, and leave it all to dry. I aim for overnight, if I can, so that the PVA can off-gas a bit before I put the piece inside. If you can leave it for longer, that’s even better.

And there you have it, a lovely custom corrugated clamshell that’s perfect for your needs. In my next post we’ll look at some non-adhesive solutions, and a great way to customize them.

Until next time!

Hyacinth Tucker (UCL) — Bindery and Conservation Technician

Custom Collapsible Cradle in a Corrugated Box!

We have many occasions to use cradles. Including, in the lab while working on delicate materials and for viewing the text of fragile bindings. In an effort to create a new standard for the lab to store with a book, I revisited the construction of a collapsible cradle that fits inside a corrugated clamshell box.

View of clamshell when lid is opened:

Opening the cradle by lifting the cloth tapes:

Obtuse (left) and acute (right) arm openings are adjustable:

The integral cradle is removable for display!

I am intrigued by this integral cradle system for a few important reasons:

The cradle is custom fit for the individual book’s opening and is stored safely with the book in the corrugated clamshell so it won’t become lost.
The cradle can be made adjustable to accommodate the book’s special handling needs by adding in additional notches.
The cradle has a base, making it removable from the box. This enables diversity in placement of the supported book. For example, librarians can remove the cradle from the box for exhibition.
This system is light, yet durable.
This system is fast and easy to create.
This system can be shelved with other books making it easily stored and accessible.

Considering all the cradles I have made so far, this one is by far the easiest and fastest to complete!
For a “one size fits all” solution, check out our blog on Elizabeth’s Rideout’s Collapsible Book Cradle.
It has been fun to explore solutions for this support mechanism to strengthen our arsenal of weaponry in the war of conservation!
Chris Voynovich (PLCH) – Conservation Technician