not sure if already posted but the way ive been playing, i stockpile everything as too knock out tons of customers a day.i keep 10 tin in the furnace (not because its lingustically pleasing because tens the max you can ship so its convienient) 5 of each gip and gaurd type. the 5 two arm poles are infront of my water the 5 polearms are under those racks next to the door as well as my one handed poles and aurds being infront of the polearms. occasionally while making a greatsword itll glitch through the table and ill rotate it out but itll detach from my two hand pole and connect to a polearm on the floor. sorry for the long reply figure id help recreate the bug.
tl;dr: greatsword detachs from pole and attaches to polearm on floor