A method of making an inkjet print head may include forming, by sawing with a rotary saw blade, continuous slotted recesses in a first surface of a wafer. The continuous slotted recesses may be arranged in parallel, spaced apart relation, and each continuous slotted recess may extend continuously across the first surface. The method may further include forming discontinuous slotted recesses in a second surface of the wafer to be aligned and coupled in communication with the continuous slotted recesses to define alternating through-wafer channels and slotted recess portions. The method may further include selectively filling the residual slotted recess portions to define through-wafer ink channels.