Finally, the perfectly shaped bamboo folder?!?
Hand tools, in particular, need to be tested and evaluated by using them. A poor design aspect quickly becomes apparent. The simpler the tool, the more critical each aspect is. And tools don’t get much simpler than a smooth bone or wood folder.
Folders are used by bookbinders to fold paper, smooth covering materials, shape leather, and evenly adhere various covering materials. Bone, ivory, teflon, and sometimes wood, are the usual materials for western style folders. Teflon has an extremely low coefficient of friction, making it ideal when you want to slide the tool over a surface that you don’t want to mark. Bone has a density and feels—for lack of a better term—traditional. I especially recommend the higher quality ones made by Jim Croft from wild elk and deer. Bamboo has been used in the east for many purposes. It has a higher coefficient of friction to it which makes it useful for pulling a covering material. A light touch or protective covering sheet must be used if marking is suspected to be a problem.
Bone folders —like most tools— have become smaller over time (technically known as ‘dinkification’). Evidence from the eighteenth century France suggests folders, commonly wood at this time, may have been 12 -18 inches long. The bamboo folders I’ve been experimenting with are a more modest 9-10 inches, though.
I keep tweaking and altering small aspects of these folders with successive iterations. The long straight sides can be used like a case folder, for turning- in. The flat areas at the pointed end are useful for pressing and forming headcaps. The angled tip useful in box making. The rounded end handy when defining joints or adhering board edges. The relatively long length makes them more comfortable to hold. This is the theory, at least. Quite likely there is no ideal shape, but what we prefer and use changes with our working habits. Or we choose tools to break us out of habituated working methods.
Bamboo is quite easy to shape and fun to work with. I’ve written up some tips on working with it in an earlier post. If you discover the perfect shape, please let me know. I’ve already started on the next one, which will certainly be the absolutely most perfect….