Drilling a Panel

Radio Record, Volume III, Issue 34, 7 March 1930, Page 29

Drilling a Panel

Y¥ far the best way of making large holes in panels, for mounting edgewise or thumb-control dials, and so on, is to mark them out first of all with a seriber, then to drill a series of holes, thirdly to cut away the webs with a suitable saw, and lastly to trim up with a file. A good saw for the purpose is one known as a metal keyhole siw, and since it costs only a few shillings it cannot be regarded as an expensive addition to the workshop équipment. The pistol-grip handle is very comfortable to use, arid the worn-out blades are easily replaced. It is often an advantage to grind new blades to a rather sharper upper point than that with which they are provided.