Show shellac coating useful to protect auto bolts A thin of shellac Is lit ail of ft au rust protection for bolts and nuts the substance will ulso pt prevent event I 1 si a nut from turning and will ivill reduce red iiri the annoyance of louse nn fin I 1 rattling rg parts both nut and liol bioli should be dir ped in a thin shellac after put in clifto with the nut tightened the bolt should have a little a nil dit ionni shellac applied to its end hla treatment wm will not only broyt rit ruA tIng but bill will allow the nut to bo be anken urr cufr wore more easily As i a ge general iveral rule it Is very huru hard to rustproof parts they tire lire coated with greasy or graphite wit but this soon wears off rind the lie rust continues to accumulate some forms of at paint are arc frequently used but these too ate arc not permanent pr neta till the shellac Is elpi exsted ted to overcome lilt |