patāḳu - to make brick structures, to smelt, refine, cast (metals), to construct, form (structures), to create (CAD P 275, AHw. 847)

Derived words: naptaḳu (an axe) (CAD N₁ 323, AHw. 742); patḳu ‘formed, built’ (CAD P 278, AHw. 1582), pitiḳtu ‘brickwork’ (CAD P 436, AHw. 869); pitḳu ‘creation, casting’ (CAD P 440, AHw. 858).
Von Soden (AHw 847) compares JBA ptḳ ‘to pierce’, Syr. ptaḳ ‘diruit’, Arb. ftq ‘to slit, to rent asunder, to disjoin’, but this is far from obvious semantically.