Drilling

The most suitable drills for use on Compact Wood® are those designed for plastic sheet materials. These drills have a point angle of 60°- 80° instead of the normal 120° for drilling metal.

To avoid breakout on the reverse side, the feed speed of the drilling head and the pressure applied should be gradually reduced approaching the point of breakthrough. Working on a firm underlay, such as plywood will also reduce the risk of breakout.

For blind boring into the face, the depth of the hole should be such that at least 1.5mm of material remains between the bottom of the hole and the other side of the sheet. TCT lip and spur drills will produce clean flat-bottomed blind holes, with less risk of point penetration on the reverse side. This will allow maximum depth of material to be used for fixings. Compact Wood® sheets less than 8 mm thick are not suitable for concealed fasteners.

When drilling parallel to the surface (edge drilling) at least 3 mm of material must remain on either side of the hole. Threaded holes can be produced using engineers’ screw cutting taps. Self-tapping screws or threaded brass inserts may also be used.

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