yeah, your method is best legacy, only my current fort is horribly horribly built and ive not yet been able to figure a way to rearrange it. so throwing things through holes in the roof and forbidding everything is unfortunately the way im doing it.
and hooray, i finally got a decent weapon. posessed, so unfortunately no legendary craftsment out of it. its an adamantium axe, with GCS silk, ruby, saphire, natuve aluminium, green glass (why did he insist on raw green glass? so many other nice things...) cave lobster shell and microcline, which somehow snuck in. i have a bunch of faint yellow diamonds somewhere, but i could not find them.
it has two pictures of my adamantium crown, one picture of itself, one picture of many pointed stars, and a picture of a dwarf ascending to leadership of my parent civ, in the year 1. which is actually pretty neat in my book, as it does constitute the first ever dwarf leader at the beginning of time as far as my little world is concerned.
its called Idathrodem, the amusing pelts, and is valued at 1254000. weird name for what is an ultimate instrument of death. perhaps when i display the flayed skins of my enimies as wall tapestries they will be amusing, for the games of noughts and crosses my chapions played on them as they dealt death. this artifact makes me ever so happy.
EDIT: it weighs 15r. same as Gork's awesome chainmail. a bog standard quality steel axe which i embarked with weighs 628r! i love adamantium. im so locking this in my deepest darkest underground room beneath 10 z levels of water and coming back to find it in advanture mode.
EDIT EDIT: check this monster out.
http://www.bay12games.com/forum/index.php?topic=28232.0 - this artifact is godlike.