Half-Life Turret Combine Sentry Gun detail 3D modeling of the submachine gun To make the barrel mobile (back and forth movement), I plan to create a system with a gear attached to the motor that pushes a rack, attached to the part to be moved
QTEK custom Half-Life phone case. No 3D Printing here, cutting the case with a soldering iron :), aero paint, clamp, flexible conduit, tinplate & plastic transformed, operating sytem images modified, old-fashioned what!