A pipette puller is provided for drawing glass or quartz tubing into micropipettes. A fixed clamp and movable clamp are utilized and between the clamps a furnace is provided which has an opposing pair of elongated heating elements. The heating elements are supported by binding posts of high thermal conductivity and relatively large mass, which provides relatively low thermal inertia of the heating elements. The heating elements may be moved relative to each other, facilitating a high degree of control ofthetemperature applied to the glass or quartz tubing for obtaining uniformly repeatable shapes of micropipettes.