A problem about bits and pilot holes?


i’ve bought a padlock and it tells “drill pilot holes for the screws.use 3.5mm drill bit.” However I don’t have one of those at the moment! Can I usse a 3mm or a 4mm one instead? Thanks. Pilot Drill Bit
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April 16, 2010 at 08:34

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Diamond cutting and polishing question;


I’ve heard that a diamond is the hardest known material and diamonds used to cut other diamonds. NOW how to cut first? Any and all info appreciated
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January 7, 2010 at 22:01

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Physics Problem!! An electric engine rotating a workshop grinding whee >>


An electric engine rotating a workshop grinding wheel at a rate of 117 rev/min is switched off. Suppose the wheel has a constantly negative angular acceleration of opulence and magnitude 2. 40 rad/s^2. Find: a) How long it takes for the grinding wheel to stop. (In sec) b) Across how lots of radians has the wh
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Chemistry Copper/Diamond/Graphite Question! 10 Easy Points!?


Help please! Copper has a cubic close-packed structure. Why does copper wire not break when it is bent? Diamond is used as an abrasive on cutting tools. How do you explain this property in terms of the structure of diamond? List one common property of diamond. Graphite is used as a lubricant. How do you expla
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December 30, 2009 at 07:56

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Twisting Force Question: using a engine to rotation a grinding wheel?


A engine used to rotation a grinding wheel of mass 10.0 kg and diameter 3.0 meters, can bring 110 N-m of torque.If this twisting force is used that to accelerate the solid disk grinding wheel, how long will it get for the wheel to achieve operating speed of 6.0 rad/s? Please demonstrate formulas and calculati
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December 26, 2009 at 01:16

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Chemistry Copper/Diamond/Graphite Problem! 10 Simple Points!?


Assist Help please! Copper has a cubic shut-packed structure. Why does copper wire not destroy when it is propensity? Diamond is used that as an abrasive on cutting tools. How do you demonstrate this property in terms of the shape of diamond? List one usual property of diamond. Graphite is used that as a lubr
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December 24, 2009 at 06:58

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