Most professional-grade files and rasps do not come with handles, as they are designed to be used with a detachable file handle. These handles are interface points between the file and the worker’s hand, making the file more comfortable to use over long periods. Also, as the file is prone to wearing out while employed, the file will need to be replaced long before the handle does, and a detachable handle allows the worker to replace the dull file for one with sharp grain. Here are some tips for choosing a handle that will last a long time and make working with metals comfortable and non-fatiguing.
Choice of material
The most common material choices for file handles tend to be wood, plastic, and rubber. Plastic is inexpensive and can be molded into various shapes for a better grip. They are generally light and easy to control. Look for handles with rubber coverings, as they offer better grip when exerting some pressure on the object being worked. The classic handle is wood: close grain hardwood, nickel-plated ferrules where the file’s tang is inserted. The ferrule helps keep the file in place, and a wax finish on the wood gives it a pleasant feeling when held.
The shape of it
As with all tools designed for hands, an ergonomic option is best. Go for a shape with an enlarged front. These reduce fatigue from extended use, provide safety from moving machinery and the rougher parts of the file, and allow the user to bear down a little when working with more rigid materials. Also, look for options with air chambers or grooves running down the handle, which helps absorb moisture. For wooden handles, a handle carved to fit the hand is better for grip, but classical smooth handles should have lipped metal ferrules for more comfortable use.
Measurements and more
It’s always worth checking that the handle being bought fits with the files on hand. Handles come in various sizes to accommodate multiple file tangs, from narrow fine-cut files to large 14” lathe files. Getting the wrong size might result in a loosely inserted file. To avoid the hassle that comes with getting the precise kind of handle. It’s also possible to get a universal clamp-style handle to hold all types of files and rasps. Workers can also use molded plastic inserts: these go into the handle and grip different sizes of files.