s ▁or ▁draft s man ' s ▁p enc il ▁sharp ener ▁leaves ▁the ▁graph ite ▁un touch ed ▁and ▁sharp ens ▁only ▁the ▁wood ▁( some ▁models ▁can ▁switch ▁from ▁standard ▁to ▁wood - only ▁by ▁an ▁adjust ment ). ▁The ▁graph ite ▁lead ▁is ▁then ▁hon ed ▁to ▁a ▁sharp ▁point ▁with ▁a ▁lead ▁pointer , ▁which ▁sharp ens ▁only ▁the ▁lead ▁without ▁wood . ▁Le ad ▁pointers ▁are ▁also ▁used ▁with ▁mechanical ▁lead hold ers , ▁with ▁th icker ▁diameter ▁leads ▁like ▁ 2 ▁mm ▁which ▁have ▁remov able / ref ill able ▁leads . ▁Some ▁sh ar pen ers ▁which ▁function ▁as ▁a ▁long ▁point ▁sharp ener , ▁have ▁a ▁second ▁hole ▁in ▁which ▁the ▁bla de ▁sharp ens ▁the ▁un touch ed ▁graph ite ▁to ▁a ▁long , ▁more ▁precise ▁point ▁than ▁would ▁be ▁otherwise ▁possible ▁using ▁a ▁single ▁hole ▁long ▁point ▁sharp ener . ▁ ▁Car pent ers ▁may ▁use ▁car p enter ▁p enc ils , ▁the ▁fl atten ed ▁shape ▁of ▁which ▁stops ▁them ▁from ▁rolling ▁away , ▁while ▁still ▁providing ▁a ▁constant ▁line ▁width . ▁These ▁p enc ils ▁were ▁tradition ally ▁sh ar pen ed ▁with ▁tools ▁convenient ly ▁to ▁hand , ▁such ▁as ▁a ▁plane ▁or ▁sand paper . ▁Rot ating ▁p enc il ▁sh ar pen ers ▁are ▁now ▁available ▁for ▁these , ▁in ▁which ▁a ▁rot ating ▁pl astic ▁col lar ▁holds ▁the ▁p enc il ▁in ▁position , ▁although ▁they ▁then ▁sh ar pen ▁them ▁to ▁the ▁usual ▁con