Figure 16-41. Work at a slow speed and use only enough feed pressure to keep the file cutting. Keep the work firmly on the table so it won't lift on the file's upstroke.
You can mount machine files in your jigsaw. These files are available in a variety of shapes, so that you can smooth the edges on the interior or exterior of almost any pattern.
When using a metal file, run the jigsaw at "Slow" speed. Feed the work gently against the file and keep the workpiece moving constantly (Figure 16-41). When you're finished, clean the table and lower chuck, and brush off the machine thoroughly to remove all metal filings.
You can use machine files to smooth the edges of wood, but use very light pressure. Otherwise, the files "load up" quickly. Sawdust becomes impacted between the grooves and must be cleaned out frequently.
