its same as dropping, u put feathers on unfinished bolts, theres a script on here that does it, 700kxp/hour
mouse on bolts, click 5(press bolt) > press 2 (moves mouse down) > press 5 > uses bolts on feathers > click 5 (select feathers) > click 8 (go up) > click 5 to use feathers on bolts
u can do it differently but u get the idea