Philips are designed the way they are so that they “cam out”. Meaning if too much force is applied to the screw, the driver will intentionally pop out to avoid damaging the tool or the fastener. Its a feature, not a flaw. A Robertson (square), torx, or hex will let you apply enough force until the screw or the driver fail catastrophically.
Philips are designed the way they are so that they “cam out”. Meaning if too much force is applied to the screw, the driver will intentionally pop out to avoid damaging the tool or the fastener. Its a feature, not a flaw. A Robertson (square), torx, or hex will let you apply enough force until the screw or the driver fail catastrophically.
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The Robertson, being a Canadian invention, appropriately allows the “full send” method of applying force.