41/ Main #oints: All #arts o' the "ri7e mechanism* i,e, #ulleys* !elts an" &ears* must !e totally enclose" !y ?9e" &uar"s
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; A c huc( &uar" must al)ays !e use", ; Buar"s shoul" !e (e#t clean so that 7ision is not im#e"e", ; Al)ays choose correct "rillin& s#ee"s 'or the material !ein& )or(e" ; or( shoul" !e securely hel" in a machine 7ice* clam# or clam#in& (it, ; $he chuc( (ey must al)ays !e remo7e" aer use an" !e'ore star+n& the machine, ; Drill !its must al)ays !e (e#t shar#* an" &roun" to the correct an&les to a7oi" sha
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