Site Work. Two words that can bring up a number of visuals and responses. Working on site has pros and cons, often times it is easier to focus than in your lab, and projects can be accomplished fairly quickly. However, site work also has the problem that the exact material that you really need is the one you forgot or left at home, and it is important to make sure you are prepared to finish all your work in one day on site, if you have to come back you have to factor in your time commuting as part of your cost, and spending time in a car instead of working is no fun.
Because I have been doing more and more site work I have developed a pretty good toolkit, I was surprised at what you really need on site, a camera is definitely a must-have, as well as a clipboard, pencil, and paper.

The really useful things in the toolkit are:
Bamboo skewers - these are so cheap and so useful, I love them, you can use them on almost anything, unlike the dental tools, which are cool, but you can’t use them on metals or anything soft so I rarely use them.
Scissors - an all-purpose pair is a must-have, I always find I have to cut things like threads, paper, etc on site and scissors are really useful.
Brushes - a few hard-bristle (hog bristle are good) brushes for removing dirt, soft bristle (sable, nylon) for either removing dirt on delicate surfaces (the fan brushes are great for removing dirt from feathers, build up a static charge and the dirt is pulled off like a swiffer). If you are waxing sculptures on site, it is useful to have brushes prepped for waxing, with blue tape over the ferule and labled ‘Wax’ on the tape, so you don’t get mixed up. Small, soft bristle brushes are also good for inpainting which brings me to….
Paints - watercolors, maybe acrylics, you can also have a palette made with MSA paints that you solubilize on site with acetone and mineral spirits. Having a lot of small amounts of each color is so much better than big tubes or jars of paint, I love the Golden titan buff liquid acrylic as the color to begin with (exceptions include porcelain) because it gives just the right warm buff color.
Spoons - you saw them, IKEA spoons, that’s right. They have been a lifesaver I don’t know how many times, mixing adhesives in with water, taking small portions of powder to a container, they are new to the toolkit, and so necessary.
Flashlight - useful on site for examinations and this goes well with
Gloves, which along with the magnifying materials and the tape measures are indiscipensible for writing up your condition reports when all you will have is 15-minutes with the object while the registrar is waiting for you to finish your notes. I keep the puffer tool in this kit because sometimes before a report is written areas need to be examined closely and dust needs to be removed, this seems to be the least-intrusive way to do this. I call this the documentation or registration bag instead of the conservation toolkit.
Tweezers - good to have a few different types, some with very pointed ends, some with serratted ends with teeth, one that is curved so you could hold a piece of cotton and dab it on the object without risking scratching the object with the tweezers, in my dream world there would also be teflon-coated tweezers, do they really exisit?
Pens - a sharpie, an archival pen, and probably a pencil for documentation - of course you aren’t using these on the object, but if you need to label a plastic bag with a fragment, pencil isn’t going to cut it.
Spatulas - I have 2 spatulas, and I don’t use them very often. I don’t really like them very much. I need a spatula with more flexibility in the end, and maybe one of the really really big ones you see paper conservators have, the cartoonishly big ones, I think there is a vendor that sells these at conservation meetings. Teflon-coated spatulas may also be something worth having, for certain jobs it would be really useful.
Scalpel - a must-have, I like the No. 9 and No. 11 blades. Some conservators keep the scalpel blade in a cork when they are not using it, having a safety like this is definitely a good idea
Other blades - I also have an exacto blade and a few other types of blades kicking around, for scraping, and cutting down fill materials to fit spaces.
Toothbrush - I didn’t know how much I needed this until I had it. Funny thing about site conservation - you are working on a museum object, but sometimes you also need materials for things like prepping your space and cleaning up after yourself or cleaning the tools you just used, this is where large brushes like Hake brushes and toothbrushes come in really handy.
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Outside the kit, other things for your conservation bag -
Optivisor
I like paper towels, lots of cotton, and a lot of small containers of different solvents like :acetone, ethanol, mineral spirits, distilled water (one small container, and a few larger containers, in case you need to mix it with something else). I do carry around glass jelly jars, they work, and are safer than any plastic jar for solvents.
Cleaning materials: Orvus, Ammonia Hydroxide, if you like using gels bring them - Pemulen TR2, Carbopol, Velvesil.
Adhesives and Consolidants: B-72 tubes, Aquazol 200, and maybe a cellulose ether
A sample book of japanese paper for small repairs, tissue paper and brown craft paper, clamps, and blue tape
Health & Safety materials: Goggles, a respirator, and a few dust masks.
Now the real secret is to find a way to get all of this in a bag that you can shlep to the site and back and not feel like you are going to kill your back. Good luck and I hope you enjoy your site work as much as I do!
Please feel free to list other useful tools in the comments section, Thanks to Michael Eisen for suggesting including a small magnet and some green painter’s tape, and thanks to Carolyn Frisa for showing me where to buy an icing spatula, which is what paper conservators use.
