was expirimenting with possible automation methods when i discovered this little quirk:
a timer activated liquicrafter set up like so will behave a bit oddly
if you set a recipe to be crafted, then after a log the recipe will vanish, but the item to be crafted will be stuck in the output slot.
the stuck item can then be pumped out endlessly
Ive been able to replicate this behavior multiple times, and the liquicrafter will switch into dupe mode after a log even if none of the necessary items for crafting are (or ever have been) in its inventory.