Moving z-axis with heat bed that fits on LabBots. This is a solution for converting a LabBot pipetter system into a 3-D printer used for fused filament fabrication.

The system includes:
    1. 2 Nema 17 stepper motor lead screw 85
    2. Hardware (aluminum extrusions, smooth/threaded rods 70
    3. Z limit switch 5
    4. Heat bed with magnetic PEI surface (35 + aluminum plates 100+compression+springs+pei magnetic 40
    5. AC Relay switch ($20)
    6. Printed parts 100