Machinist’s files (also known as engineer’s files) are designed for shaping and finishing material.
These types of file are available in a number of different cross sections.
They were invented with corners and curves in mind, allowing metalworkers to create slots and gaps with narrow or wide angles and curves of any gradient and shape.
Machinist’s files are used in a variety of artistic trades, ranging from jewellery making to the creation of ornate metal gates.
Larger workpieces will usually require an American pattern file, while smaller objects will require a Swiss pattern file, although in many cases the shape is more important than the type of file you use.
This is because American pattern files are usually made in larger sizes, whereas Swiss pattern files tend to be smaller and more precise.
Coarse machinist’s files are used for the rapid removal of material and are usually double cut to increase speed.
Finishing is done by smoother files that are single cut. This type of file is the best type of file to use when draw filing.