Installing Screws and Plugs

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Description

In this one hour lesson students will learn, that to correctly
install a screw in hardwood, you must first drill a pilot hole,
shank hole, countersink and a counterbore if you intend on putting
a plug over the screw.


Many students have used screws in sheetrock, pine and
construction grade wood and therefore feel they already know how to
use screws correctly. Using screws as a fastener in hardwood,
particularly in an edge to end grain joint, requires careful
selection of bits and drivers.


By exploring these methods students will learn about the
different types of screw heads, screw sizes and screw drivers.


*warning*  The 2nd "hook" in this lesson is designed as a
"humbling" exercise. Make sure you choose a student or two that
will be ok with failure.


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    Grade: 8 to 12

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